Peterbilt Conventional Service Manual

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OPERATOR’S

MANUAL

Quick Table of Conte nts

•Introduction............................................1

•Cab And Frame Access............................5

•Getting To Your Engine .................................9

•Controls And Disp lays ...................................16

•Seat And Restraint Systems............................. 63

•Driver’s Checklists ................................................76

•Starting And Operating The Vehicle........................ 80

•Maintenance and Ser vice. ........................................ 112

•V ehi cle Identification.................................................... 184

•Consumer Inf o rma tion .................................................... 185

•Subject Index ............................................................ 187

California

Proposition 65 Warning

• Diesel engine exhaust and some of its constituents are

known to the State of California to cause cancer, birth defects, and other reproductive harm.

• Other chemicals in this vehicle are also known to the

State of California to cause cancer, birth defects or other reproductive harm.

• Battery posts, termi nals, and related accessor ies con-

tain lead and lead compounds, chemicals known to the State of California to cause cancer and reproductive harm. Wash hands after handling.

PART 1: INTRODUCTION

This manual contains useful information for the safe and efficient

operation of your Peterbilt vehicle. It also provides information on maintaining your vehicle in the best condition, with an outline for performing safety checks and basic preventive maintenance inspections.

We have tried to present the information you’ll need to learn about your vehicle’s functions, controls, and operation - and to present it as clearly as possible. We hope you’ll find this manual easy to use.

Please remember, though -- this manual is not a training manual. It can’t tell you everything you need to know about driving your Peterbilt vehicle. For that you need a good training program or truck driving school. If you have not been trained, get the proper training before you drive. Only qualified d rivers should drive this vehicle.

There will be times when you need to take this manual out of your Peterbilt. When you do, please be sure to return it to the cab when you are finished using it. That way it will be there when you need it the next time or when you pass the vehicle on to the next user.

How to Find What You Want

There are several tools built into this manual to help you find what y ou need quickly and easily.

First is the Quick Table of Contents. Located at the front of the manual, this lists the main subject s c overed and gives pa ge num bers where you can find these subjects. Use the Quick Table of Con tents to find information on a large subject like “Maintenance.”

Cross-referenced citations also help you get the information you need. If some other par t of the manual contains fur ther information on the subject you are reading about, we’ll indicate that in a cross-reference like this: (See PART 6: DRIVER’S CHECKLIST have to go searching for more information.

Finally you’ll find a helpful Subject Index. It’s in the back of the manual and alphabetically lists the subjects covered. So if you want information on brakes, for example, just look under Bra ke Index. You’ll find all the pages listed where brakes or braking are discussed.

). You won’t

in the Subject

A Special Word about Repairs

Your Peterbilt dealer’s ser vice center is the best place to have your vehicle repaired. You can find Peterbilt dealers all over the country with the equipment and trained personnel to get you back on the road quickly - and keep you there.

Your vehicle is a complex machine. Anyone attempting repairs on it needs good mechanical training and the proper tools. If you are sure you have these requirements, then you can probably perform some repairs yourself. However, all warranty repairs must be performed by an autho rized Peterbilt se rvice facility. If you aren ’t an experie nced mechanic, or don’t have the r ight equipm ent, plea se leave all repairs

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PART 1: INTRODUCTION

to an aut horized ser vice facility. They are the one s equipped to d o the job safely and correctly.

WARNI NG! Attempting repair work without sufficient training, service manuals, and the proper tools can be dangerous. You could be injured or you could make your truck unsafe. Do only those tasks you are fully qualifie d to do.

Maintenance Manuals. If you do decide to do any complex repair

work, you’ll need the Peterbilt Maintenance manuals. Order them from your authorized dealer. Please provide your Chassis Serial Number when you order, to be sure you get the correct manuals for your vehicle. Allow about four weeks for delivery. There will be a charge for these manuals.

Final Chassis Bill of Material. A complete, nonillustrated computer printout listing of the parts used to cust om -build your Peterbilt vehicle is available through the Peterbilt dealer from whom your p urchased your vehicle.

WARNI NG! Modifying your vehicle can make it unsafe.

Some modifications can affect your truck’s electrical system, stability, or other impor tan t functions. Before modifying your vehicle, check with your dealer to make sure it can be done safely.

Additional Sources of Information

Operator’s manuals are also s upplied by the manuf act urers of components such as the engine, seats, transmission, and radio in your Peterbilt. If you are missing any of these manuals, ask your Peterbilt dealer to supply them.

Your new Peterbilt’s glove box also contains a copy of the Tru ck

Driver’s Handbook, published by the American T rucking Association. Refer to it for important information on driving your vehicle. Another place to learn more about trucking is a local truck driving school. Contact one near you to find out what kinds of instruction it offers.

Federal and state agencies also have information you can ask for. The Interstate Commerce Commission can give you information about regulations governing transportation across state lines. And various agencies in state governments are sources for regulations that differ from state to state.

Warnings

We’ve put a number of warning m essages in this manual. They are there for your protection and information. Please read them and follow them. They can h elp you to avoid injury to yourself and your passengers as well as to p revent costly damage to your vehicle. We’ve

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PART 1: INTRODUCTION

used certain symbols and “signal words” to indicate what kind of message is going to follow. When you see these symbols & words, you know that you need to p ay special attention. P lease don’t ignore any of these signals.

WARNI NG!

When you see this symbol & word, the message that fo llows is especially vital. This signals something that c an cause serious injury or death. This message will tell you what the hazard is, what can happen if you don’t heed the warning, and how to avoid it. For examp le:

WARNI NG! Attempting repair work without sufficient training, service manuals, and the proper tools can be dangerous. You could be injured or you could make your vehicle unsafe. Do only those tasks you are fully qualifie d to do.

CAUTION:

This symbol & word signals something that could damage your vehicle. And you might receive an injur y, too. For example:

CAUTION: Continuing to operate a vehicle with insufficient oil pressure will cause serious engine damag e .

NOTE:

Gives you information we feel you ’d like to have. It could have to do with care of your vehicle or with driving more efficiently:

NOTE: A cold compressor can cause refrigerant to liquefy and warp the valve plates or cause a hydraulic lock. Warm the engine before starting the air conditioner.

Please take the time to read these messages when you see the m. And remember:

WARNING! Something that could injure you seriously. CAUTION: Something that could cause injury to you or your

vehicle.

NOTE: Useful information.

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PART 1: INTRODUCTION

Vehicle Safety

Make sure your Peterbilt is in top working condition before heading

out on the road—it is the the vehicle according to PART 6: DRI VER ’ S C HE CKL IST

WARNING! Do not drink and drive. Your reflexes, perceptions, and judgment can be affected by even a small

amount of alcohol. Y ou could have a serious—or even fatal accident—if you drive after drinking. Please do not drink and drive or ride with a driver who has been drinking.

WARNING! The use of alcohol, drugs, and certain medications will seriously impair perception, reactions, and driving ability . These cir cumstances can substantiall y increase the risk of an accident and personal injury.

Please remember, this manual is not a training manual. It cannot tell you everything you need to know about driving your Peterbilt vehicle. For that you need a good t raining program or truck d riving school. If you have not been trained, get the proper training before you drive. Only qualified drivers should drive this vehicle.

Every new Peterbilt vehicle is designed to conform to all Federal Motor Vehicle Safety Standards applicable at the time of manufacture. However, even with these safety featu res, continued safe and reliable operation depends greatly upon regular vehicle maintenance. The vehicle must be operated within the range of its mechanical capabilities and the limits of its load ratings. (See the Tire and Rim Weight Ratings label on the driver's door edge.)

responsible

driver's duty to do so. Inspect

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PART 2: GETTING INTO AND OUT OF THE

CAB AND FRAME ACCESS

Be careful whenever you get into or out of your vehicle’s cab. Whether you have a COE or conventional cab, always maintain at least three points of contact with your hands on the grab handles and your feet on the steps.

WARNING! Jumping out of the cab or getting into the cab without proper caution is dangerous. You could slip and fall, possibly suffering a serious injury. Keep steps clean. Clean any fuel, oil, or grease off of the steps before entering the cab. Use the steps and grab handles provided, and always keep at least three points of contact between your hands and feet and the truck. Look where you are going.

COE: The pictures below show the best way to enter and exit a COE

cab.

02957

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PART 2: GETTING INTO AND OUT OF THE CAB AND FRAME ACCESS

CONVENTIONAL: The picture below shows the best way to enter

and exit a Conventional Cab.

02958

Door Lock and Keys

Doors can be l ocked from the inside by us i ng the lock b utton. Close the door then push the button down to lock. Doors automatically unlock when you open them from inside, and can be locked from the outside with the k ey only.

WARNING! To lessen the chance and/or severity of p ersonal injury in case of an accident, always lock the doors while driving. Along with using the lap/shoulder belts proper ly, locking the doors helps prevent occu pants from being thrown from the vehicle.

To lock or unlock the doors from outside the cab, insert the key in the lock.Turn the key toward the rear to lock; forward to unlock.

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PART 2: GETTING INTO AND OUT OF THE

CAB AND FRAME ACCESS

Climbing Onto the Deck Plate

When you are climbin g onto and of f the deck plate, maintain a t least three points of contac t with your hands on the grab ha ndles and your feet on the steps.

WARNI NG!

•

You can be hur t if you aren’t careful climbing onto and off the deck plate. You can slip and fall, especially if the surfaces are wet or icy, or if you step in oil, fuel, or grease. Keep steps clean. Always maintain at least three points of contact between your hands and feet and the steps and deck plate.

•

Do not climb onto and off the deckplate–use steps and grabhandle provided. If there is no de ck plate, or if proper steps and grab handles aren’t provided, don’t climb on t o t he ar ea behind the cab . Peter bi lt did not intend for the area to be a step if handrails or proper steps are not provided.

The pictures below show you the right way to get on and off the area behind your cab.

02959

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PART 2: GETTING INTO AND OUT OF THE CAB AND FRAME ACCESS

02960

WARNI NG! Do not step on vehicle components without antiskid surfaces or use components not designed for entry-and-exit use. You could fall and injure yourself if you step on a slippery surface. For example:

•

You c o uld fa ll and in jure you rself if you step o nt o a fuel tank surface. A fuel tank is not a step. The tank surface can get very slippery, and you might not be

able to prevent a fall. Don’t step onto the surface of a fuel tank. Use only the step s and handholds provided, not chain hooks, quarter fenders, etc.

•

Always reinstall steps before entering the cab or accessing the deck plate. Without steps, you could slip and fall, resulting in possible injury to yourself.

NOTE: Any alteration (adding bulkheads, headache racks, tool boxes, etc.) behind the cab or sleeper that affects the utilizatio n o f grab ha nd les , de ck p lat e s, or fra m e acc es s steps installed by Peterbilt must comply with FMCSR 399.

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PART 3: GETTING TO YOUR ENGINE

Hood Hold Downs (Conventional Cabs)

Your hood hold downs keep your hood from opening unexpectedly

02961

CAUTION: If you do not latch your hood securely, it coul d open duri ng oper ation and caus e vehic le dama ge. Be sure to latch the hood securely.

Hood Tilt (Conventional Cabs)

02962

To open your hood, unlock the hood hold downs by unlatching them. Put one hand on the top of the hood front, one foot on the bumper, and one foot on the ground. Tilt the hood forward.

WARNI NG! Before opening or cl osing the hood, be sure there are no people or objects in the way. A hood could hurt someone in the way of its descent.

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PART 3: GETTING TO Y O UR ENGINE

Safety Cable

02963

WARNING! If the hood falls, anyone under it could be injured. Always attach the safety cable to keep a hood open any time anyone gets under a hood for any reason.

To attach the safety cable: The cable is on the driver’s side of the radiator. Attach it to the hook on the hood.

COE Cab Tilt System

If you have a COE type of vehicle, your cab tilts forward for maintenance on the engine and other components. An independent hydraulic system raises and lowers the cab. And a positive dual locking device increases safety and reduces the danger of mishaps while you are driving.

WARNING! Getting any part of your body under an unsecured cab could cause a serious or fatal acciden t. The cab could fall and crush you. Always make sure the mechanical lock is fully engaged before getting under the cab, or before letting anyone else get under it. See below for instructions on using the mechanical lock.

02964

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PART 3: GETTING TO YOUR ENGINE

CAUTION: R aising the cab with heavy objects in the cab, sleeper, or luggage compartment can cause serious damage to the cab tilting mechanism and cab. Before tilting the cab, remove heavy items such as tire chains and tools. Remove or stow securely any loose items. And shut the doors tightly.

Cab tilting instructions are labeled and in stalled on t he base of the passenger seat in your cab.

WARNI NG! You can be seriously injured by the cab if you do not follow safety precautions. Whenever you raise or lower the cab, or when you work under the cab, please remember the following safety rules:

•

Be sure no one is under the front of the cab. Whether you are raising or lowering the cab, KEEP CLEAR.

•

Never work under a raised cab unless it is properly supported. This means use an overhead hoist of sufficient capacity to support the cab safely. Never prop the cab up instead of using a hoist. The prop could fail and let the cab fall on you or anyone else working under the cab.

•

Always be sure the safety latch is engaged when you or anyone else works under the cab.

•

Perform w ork only when the cab is in th e mechanically locked position or in the full tilt position.

•

When your cab’s hydraulic system needs ser vi ce or repair:

- Have maintenance and repair done only by someone qualified in hydraulic systems.

- Be sure no one tries to bleed the system with the cab raised. This will defeat the safety system. The cab can fall and crus h a nyone under it.

- Do not tamper with any part of the cab tilt cylinders, including removing the velocity fuses. To do so will defeat their purpose. The cab could fall and crush anyone under it. If you have any need for repair involving the velocity fuses, have a qualified truck mechanic do the work.

NOTE: In case of oil loss i n the syst em or a lo ck-up in the til t cylinders, refer to the maintenance manual for repair instructions.

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PART 3: GETTING TO Y O UR ENGINE

To Raise the Cab:

1. Park the vehicle on a lev el surf ace to ensure proper hook and latch alignment.

2. Apply the parking brake.

3. Make sure the shift lever is in Neut ral. This will prevent the shift lever from g etting caught on the cab duri ng tilt operation.

4. Secure or remove all loose items in the cab and luggage compartments. Close all doors.

5. Check the clearance above and ahead of the cab. Be sure there will be enough room to clear roof antennae, roof fairings, and side extenders when you tilt the cab. Chec k for obstructions overhead, such as branches, power lines, lights, etc. Check also for obstructions in front, such as walls, work benches, other vehicles, etc.

6. Place the control valve handle in the Tilt (Raise) position.

02965

7. Pump the cab up until the mechanical lock engages. Now put the control valve handle in the center position.

02966

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PART 3: GETTING TO YOUR ENGINE

When the cab is raised to the point where the weight of the cab is greater in front of its hi nges than to the rear, gravity wi l l mak e i t fall forward. It will fall at a controlled rate.

8. If you want the cab in the full forward position, pull the cable to disengage the mechanical lock. You may have to free the lock by raising or lowering the cab to relieve pressure on the locking mechanism.

02967

WARNING! When the cab is tilted fully (90°), the roofmounted antenna mast could injure someone. Remove or flag the mast before tilting the cab a ll the way forward.

CAUTION: When tilting the cab to the full tilt, or vice versa, hold the safety lock bar up to prevent it from engaging at the locked position. If it does lock, you r cab could be severely damaged.

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PART 3: GETTING TO Y O UR ENGINE

To Lower the Cab

1. Place the control valve handle in the Return (Down) position.

02968

2. Release the mechanical lock. Hold the safety lock bar up.

3. Pump until the cab starts to descend. The valve system will co ntrol the speed in either direction automatically.

CAUTION: Do not try to pump the cab down or hold it down with hydraul i c force. If you do, ca b damage will occur.

4. Leave the handle in the down position for at least 20 seconds after the cab touches down. This allows time for the full spring force to develop in the cab latch. Inspect the hooks to be sure they are closed. If they are not properly engaged, raise the cab slightly and guide the latch, if necessary, w hile lowering the cab.

02969

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PART 3: GETTING TO YOUR ENGINE

WARNI NG! Placing any part of your body between the cab and the frame could result in serious injury. Keep hands and feet out from under the cab if it must be raised to re-engage the cab latches. Guide the cab from the outer surfaces only.

5. Return the control valve handle to the Lock (Ce nter) position for normal operation.

CAUTION:

•

Do not continue to operate the pump after the cab is in the full Down pos i tio n. Addit io nal pumping could cause structural damage to the cab.

•

Driving with the cab tilt lock unsecured can damage your vehicle. Check daily to be sure the lock is closed securely .

NOTE: In case of oil loss i n the syst em or a lo ck-up in the til t cylinders, refer to the maintenance manual for repair instructions.

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PART 4: CONTROLS AND DISPLAYS

Your Instrument Panel

This part explains the location of t he vari ous feat ures on your vehicle and describes their function. Fo r informa tion on using these features in driving, see the paragraphs below. Please remember that each Peterbilt is custom-made. Your instrument panel may not look exactly like the one in the pictures below. We have tried to describe all the most common features and controls available. You can pick out the parts that apply to you and read them to be fully informed on how your particular vehicle operates.

Typical Conventional Cab Instruments and Controls

Panel A

Panel C

11 12 13

910

LEFT SIDE

1. Tachometer 8. Speedometer

2. Oil Pressure 9. Clearance Lamps

3. Clock 10. Headlamps

4. Oil Temperature 11. Ignition Key Switch

5. Warning Lamp Clust er 12. Windshield Wiper/Washer

6. Water Temperature 13. Panel Light Dimmer

7. Dual Air Pressure

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PART 4: CONTROLS AND DISPLAYS

Conventional

12 3

45 6

7 8 9

13 14 15 16 17

RIGHT SIDE

1. Fuel 13. Engine Brake

2. Air Cleaner Restriction 14. Engine Fan

3. Transmission Oil T em perature 15. Fuel Tank Selector

4. Voltmeter 16. LH Air Window

5. Manifold Pressure 17. RH Air Window

6. Front Driver Oil Temperature 18. Sleeper Door Lock

7. Air Applica t ion 19. Ca b D oor Lock

8. Pyrometer 20. RH Mirror

9. Rear Driver Oil temperature 21. Mirror Heat

10. Air Suspension 22. LH Mirror 1 1. Fifth Wheel 23. Day/Night Signal

12. Interaxle Differential Lock 24. Cruise Control

Panel B

18192021222324

Panel D

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PART 4: CONTROLS AND DISPLAYS

Typical COE Instruments and Controls

02973

LEFT SIDE

1. Hazard Flasher 14. Water Temperature

2. Turn Signal 15. Speedometer

3. Ignition Switch 16. Air Pressure

4. Start Button 17. Air Pressure

5. Manifold Pressure 18. Transmission Temperature

6. Air Cleaner Restriction G auge 19. Fuel Gauge

7. Ammeter 20. Clock

8. Voltmeter 21. Front Driver T em perature

9. Engine Oil Temperature 22. Rear Driver Temperature

10. Tachometer 23. Lighter 1 1. Oil Pressure 24. Trip Odometer

12. ABS Warning Lamp 25. Shift Pattern Decal (if used)

13. Pyrometer

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COE

PART 4: CONTROLS AND DISPLAYS

02974

RIGHT SIDE

1. Air Suspension Switch 13. Engine Fan

2. 5th Wheel Lock 14. Headlamps

3. Lockout Differential Switch 15. Ether Switch

4. Reset Circuit Breakers 16. Trail er Brake Hand Valve

5. Retarder Switch 17. Cab Air Selector

6. Loading Lamp 18. Cab Heat Control

7. Fuel Tank Selector L/R 19. Cab Ve nti lation

8. Light Toggle Switch 20. Cab A/C Control

9. Spot Light 21. Parking Brake Valve

10. Engine Brake 22. Trailer Air Supply 1 1. Mirror Heat 23. Right Hand Air Window

12. Clearance Lamps 24. Windshield Washer / Wiper

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PART 4: CONTROLS AND DISPLAYS

Steering Column-Mounted Controls

Turn Signal and Indicator Lights

02882

Model 379 vehicles built on

or after 5/1/98 with SRS

Your turn signal lever is mounted on the left side of the steering column below the steering wheel. Green directional indicator lights appear on the instrument panel.

NOTE: The ignition key must be turned to ON for the signal/ switch to operate.

To operate the signal, move the lever in the direct i on of the turn.

02882A

W ARNI NG! Af t er yo u c ompl et e a tu rn , s hut the sy stem of f

by returning the lever to the “O FF” (center) positi on. The switch's lever action is NOT self-canceling. Failure to shut off a turn signal could confuse other drivers and res ul t in an injury accident. An indicator light in the instrument panel will flash until the turn signal is turned off.

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PART 4: CONTROLS AND DISPLAYS

Hazard Flasher

02883

or after 5/1/98 with SRS

The four-way Hazard Flasher switch is on the turn signal body, just below the turn signal lever. It will operate with the key switch in the on or off position. Use your hazard flasher whenever you are off the road or on the side of the road, or in a potentially hazardous situation. Pull it out to activate the system. All turn si gnals will flash at once. To turn it off, move the turn signal lever up or down. Of course, in normal stopping in traffic, such as at a stop light, you do not use your flashers.

WARNING!

time you have to stop off the road or on the side of the road, day or night. A hard-to-see vehicle can result in an injury accident. Another vehicle could run into you if you do not set your flashers. Always move the vehicle a safe distance off the road when stalled or stopped for repairs.

Use your Hazard Flasher Warning System any

02883A

Model 379 vehicles built on

disabled vehicle can be dangerous for you and others.

•

The hot exhaust system could ignite dry grass, spilled fuel, or other substances. Do not park or operate your vehicle where the exhaust system could contact dry grass, brush, spilled fuel, or any other material that coul d cause a fire.

Air Horn

Your Peterbilt has an air horn in ad dition to an e lectric horn. Control the air horn by pulling on the lanyard extending from the overhead header panel.

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PART 4: CONTROLS AND DISPLAYS

High Beam Headlights

02884

02884A

Model 379 vehicles built on

or after 5/1/98 with SRS

All Pe te rbilt vehicles c om e equipped with a combination t urn signal and high beam/low beam s witch. To switch your headlights lower or higher

• For Model 379 vehicles built on or after 5/1/98 with SRS: Gently

pull the turn signal lever up, towards the steering wheel, until you

hear the switch “click” and the beam changes.

• For all other vehicles: Push and release the button on the end of

the turn signal lever

Electric Horn

Your Peterbilt has an ele ctric horn. To sound the horn, press on th e button or bar in the center of the steering wheel.

02886

27884

Model 379 vehicles built on

or after 5/1/98 with SRS

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PART 4: CONTROLS AND DISPLAYS

Trailer Brake Hand Valve

02975

02975A

Model 379 vehicles built on or after 5/1/98 with SRS

This hand valve provides air pressure t o a pply t he tr ailer brak es only. It operates independently of the foot treadle valve.

To operate the trailer brake hand valve: Pull down on the lever under the ri ght sid e of the st eeri ng whee l or on th e dash (C OE model s).

W ARNING! Grabbing th e trailer hand brake lever instea d of the BrakeSaver lever could lead to an accident. If you have the se l evers, they may be clos e to gether on your steering wheel column. Be sure you get the one you want. T he BrakeSaver lev er is bent, while the trailer p arking brake le ver is straight (see

Brake Safety and Emergency” for more complete information on

See “

page 36

when and how to use your trailer brake. Or see the Index, under Brake

NOTE: The trailer brake is not to be used as the main means of braking. T o use this brake frequently instead of using the foot brake will wear out the trailer brake sooner.

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.”

PART 4: CONTROLS AND DISPLAYS

WARNING! It is dange rous to use air-a ppl ied trailer brakes for parking or holding a vehicl e. Air system pressure can bleed d o wn an d release the brakes. You could have a vehicl e roll-away result ing in an accident. You or others could be badly injured. Always apply the parking brakes for parking or holding your vehicl e on grade.

Tilt- Telescoping Steering Column

The tilting feature of the steering wheel allows forward and rearward movement of the wheel . T he t elescopi ng f eature al lows y ou to m ove the wheel up and down.

02976

02976A

Model 379 vehicles built on

or after 5/1/98 with SRS

WARNING! Adjustin g the Tilt-Telescoping Steering Wheel while the vehicle is in motion could cause loss of

control. You wouldn’t be able to steer properly and could have an accident. Make all adjustments to the steering mechanism while the vehicle is stopped.

• Model 379 vehicles

To tilt the wheel: Push the lever away from yourself. Move the steering wheel to the desired angle, then release the lever to lock.

To raise or lower the wheel: Pull the lever towards y ourself. Push or pull the wh eel to the desi red he ight , th en rel ease t he lever to lo ck.

• All other models

To tilt the wheel : Pull the lever towards yourself. Move the steering wheel to the desired angle, then release the lever to lock.

To raise or lower the wheel: Push the lever away from yours el f . Push or pul l the wheel to the des i red height, then re l ease the lever to lock.

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PART 4: CONTROLS AND DISPLAYS

Dash-Mounted Features

Keys and Locks

Conventional Models: The same key fits your ignition, doors, and sleeper luggage compartment.

COE Models: The same key operates the ignition and opens the doors and the glove box.

Frame-mounted tool box locks and locking fue l tank caps each have individual keys.

Ignition Switch

Your ignition switch has three (COE) or four (conventional) positions:

OFF

ACC ONLY

IGN & ACC

START

02977A

ACC (Accessory): With your key in this position you can play the

radio or use other accessories, but your engine

won’t start.

OFF: In this position all systems are off, and you can

remove yo ur key.

IGN & ACC: This position allows you to turn on the engine

and all accessory power.

START: Starter activation to start engine (conventional

models only).

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PART 4: CONTROLS AND DISPLAYS

Starter Button

02887

On COE models: with the key switch in the IGN & ACC position, push the starter button; this will engage the starter motor and crank the engine.

Manual Override for Engine Shutdown

02889

On vehicles with an engine shutdown, you will have to hold the manual throw switch in the UP position until normal engine pressures are reached. If you have one of t hese systems, a label on the control panel will say so.

For detailed starting procedures, see the Index, under St arting and

Operating 80.

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PART 4: CONTROLS AND DISPLAYS

Hand Throttle Control

WARNING! Do not use the hand throttle control as a cruise control. It could cause an accident and you could be seriously injured. In an emergency you m ight not be able to unset it in time to save yourself and your vehicle from an accident. Never try to control road speed with your hand throttle control. Always push in the hand throttle before driving the vehicle.

If you have a hand throttle, in conventional cabs it is usually located to

the left of the driver’s seat, mounted on the floor. In COEs it is un der the lefthand dash. It can be especially helpful in cold weather to keep your engine running at above idle speed when you leave the vehicle briefly.

For more information on idling your engine safely, see the Index, under Engine

Headlights

02890

The headlights are controlled by the control panel switch showing this symbol. When the headlights are ON, the dash lights, side, and tail lamps are also on.

WARNING! Do not use daytime running lights (DRL) during periods of darkness or reduced visibility. Do not use DRL as a substitute for headlights or other lights during ope rat i on s tha t re qu ire l ig ht i ng of your vehicle. Doing so could lead to an injury accident

NOTE: On vehicles equipped with daytime running lights (DRL), the high-beam headlamps go on automatically at reduced brightness if the engine is running and the headlamp switch is turned off. The daytime running lights are turned off automatically while the parking brake is engaged. If the headlamp switch is turned on, the DRL system is overridden & headlamps operate normally.

PB1317 (CAT. NO. 5229 ) —27— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Panel Light Knob

02891

The Panel Light Knob lets you vary the brightness of your instrument panel lights.

To Operate Your Panel Light Knob:

1. Turn on either the headlights, clearance lights, or fog / driving lights.

2. To brighten the instrument panel lights, turn the knob clockwise (to the right).

3. To dim the instrument lights or to turn them off, turn the knob counterclockwise (to the left).

ID and Clearance Lights Switch

02892

These are the ambe r lights on top o f your cab, the lights on the front and sides of the trailer, and the red lights on the rear of a truck or trailer. They are controlled by the control panel switch labelled CL LPS.

PB1317 (CAT. NO. 5229 ) —28— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Fog Lights Switch

02893

If your vehicle has fog lights, turn them ON or OFF with the control panel switch labelled FOG LIGHT.

NOTE: State requirements vary as to when high beams and fog lights can and cannot be used together. Further, some states allow only four lights to be used together; some allow more. Whether you have dual or composite lights will affect how many lights you can have on at one time. Always comply with the state requirements where you are driving.

Dome Light Switch

02894

A three-position switch controls each dome light. Position 1 (Center): Light is OFF. Position 2 (Upward): Light will stay ON. Position 3 (Downward): Light will turn ON when a door is opened

and OFF when the door is closed.

PB1317 (CAT. NO. 5229 ) —29— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Windshield Wipers and Washers

02896

Wiper

To turn on the wipers rotate the knob to the right. As the knob is rotated, the speed of the wipers increases. To turn off the wipers, rotate the knob to the left.

Washer

To use the washer, push the k nob showing the s ymbol above. With the elect ric wiper s, the wi pers will co me o n for a sh ort ti me wh e n the washer starts.

WARNING! Do not drive with worn or dirty wiper blades. They can reduce visibility, m aking driving hazardous. Clean blades regularly to remove road film and wax buildup. Use an alcohol-based cleaning solution and a lint-free cloth, and wipe along the blades.

CAUTION: Do not use antifreeze or engine coolant in the

windshield washer reservoir—damage to seals and other components will result.

Intermittent Windshield Wiper Control

Two-speed intermittent windshield wipers are controlled by the control panel knob with the symbol shown above. To turn on the wipers, rotate the knob to the right.

As you turn the kn ob furt her t o the ri ght, i ntermitt ent delay decreases until the knob en counters the first posi tion for continuous operation. Turn the knob further right to the next position for higher speed continuous operation. Turn off the wipers by rotating the knob to the left.

PB1317 (CAT. NO. 5229 ) —30— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Air Suspen sion Defl ate Switch (Du mp Valve)

AIR SUSPENSION

03035

02897

Your Peterbilt vehicle may have an air suspension deflation switch which allows the air in the suspension to b e exhausted from a s witc h on the dash. The purpose of this feature is to allow you to lower your tractor to get under a trailer.

You may notice a guard over the switch. This prevents you from accidentally deflating the suspension.

WARNING! Operating the Air Suspension Deflate Switch (Dump Valve) while driving can lead to an accident. Sudden deflation while your vehicle is moving can affect handling and control. Use this switch only when your vehicle is not moving.

CAUTION: Operating a vehicle with air suspension bags either overinflated or underinflated may caus e damage to driveline components. If a vehicle must be operated under such conditions, do not excee d 5 mph.

PB1317 (CAT. NO. 5229 ) —31— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Engine Fan Switch

02898

The engine fan switch allows you to c ontrol the engine fan manual ly or automatically . With the ignition key switch ON and the fan switch in the ON p osition, the eng ine fan w ill be on reg ardless of engin e temperature. With the engine fan switch in the AUTOMATIC position, the engine fan will automatically turn on when the engine coolant reaches a temperature of about 200

WARNING! Do not work on the fan with the engine running. Anyone near the engine fan when it turns on could be badly injured. If it is set at ON, it will turn on any time the ignition key switch is turned to the ON position . In AUTOM ATIC, it could e n ga g e suddenly without warning. Before turning on the ignition or switching from AUTOMATIC to ON, be sure no one is near the fan.

°F.

CAUTION: The fan or equipment near it could be dam-

aged if the fan turns on suddenly when you don’t expect it. Keep all tools and equipment such as rags away from the fan, and take care no one turns on the ignition when some one is working near the fan.

CAUTION: Do not operate the engine fan in the manual (ON) position for extended periods of time. The fan hub was designed for intermittent operation. Sustained operation will shorten the fan hub’s service life as well as reduce fuel economy.

PB1317 (CAT. NO. 5229 ) —32— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Cruise Control Switch

02901

WARNING! Do not operate the cruise control when operating on road surfaces with poor traction (wet, icy, or snow covered roads) or in heavy traffic. Accelerations caused by the normal operation of the cruise control could cause you to lose control of the vehicle resulting in an injury accident.

NOTE: Cruise control functions and features may vary depending upon which engine you have. For specific explanation of your cruise control, see the cruise control or engine manual included with your vehicle.

The master switch turns the cruise control ON or OFF. Th e second switch allows you to SET the desired sp eed or RESUM E the desired speed after the cruise control function has been interrupted.

In conventional models with Eaton transmissions, the cruise control switches may be located on the shift control knob (see illustration):

PB1317 (CAT. NO. 5229 ) —33— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Power Mirror Switch

02900

WARNING! Convex mirrors can distort imag es and make objects appear smaller and farther away than they really are. You could have an accident if you are too close to another vehicle or other object. Keep plenty of space between your vehic le and others when you turn or change lane s. Reme mber that other objects are closer tha n they may appear.

The power mirror control controls the adjustment of the right and left outside mirrors. To adjust: Push to R or L to select which mirror you want to adjust. Next push the arrow that points toward the d irection you want to move the mirror.

Mirror Heat Switch

02899

NOTE: The Power Mirror Switch does not control the adjustment of the convex mirrors.

Mirror heat is controlled by the c ontrol panel switch l abelled MI R HT. If the vehicle is equipped with this switch, mirror heat can be switched on to help remove frost and ice from the mirror glass.

PB1317 (CAT. NO. 5229 ) —34— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Digital Mess ag e C enter

ENTER

∨

DIAG

TRIP

FUEL

∨

SENSOR

CLOCK

MAINT

INFO

RESET MSG

∨

CANCEL

03038

The optional digital messa ge center (DMC) is an onboard computer used to provide the following:

• tr ip informati on

• clock/calendar

• fuel economy

• sensor data

• fault codes

• maintenance information

• warning messages

The DMC is available on c onventional models. The DMC vacuumfluorescent display is capable of displaying 40 characters. Navigation through the information is done by means of an integral keypad.

Refer to the DMC operator’s manual that came with the vehicle for more information on using this component.

PB1317 (CAT. NO. 5229 ) —35— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Brakesaver

The Caterpillar BrakeSaver provides auxiliary braking to slow the vehicle and to control speed on long grades. Refer to the BrakeSaver Operation section of the Caterpillar manual for complete operating instructions.

Manual Control Lever

02902

This hand-operated control lever provides modulated application of the BrakeSaver in the manual o r ON mode. How much braking you get depends on how much you move the lever.

Manual and Automatic Control Switch

02903

With the switch in the AUTOMATIC p osition, the BrakeSav er will b e fully applied automatically when the operat or has the vehicle in gear and takes his or her foot off the accelerator pedal.

With the switch in the ON position, the BrakeSaver will be applied constantly, regardless o f whether the operator has the ve hicle in gear or his or her foot off the accelerator.

A Control Air Pressure gauge and an Engine Oil Temperature gauge are provided with the BrakeSaver.

PB1317 (CAT. NO. 5229 ) —36— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Jacobs Engine Brake or Cummins “C” Brake Switch

02904

2-Mode and 3-Mode Systems

WARNING! Using the engine brake when operating on surfaces with poor traction (such as wet or icy, slippery roads or gravel) could cause loss of control.

The ON/OFF switch turns th e sys tem ON or OFF. The second switch performs the progressive braking function th at controls the am ount of retarding:

• If you have the three-m ode system, you can select low (A),

medium (B), or high (A + B) retarding.

• If you have the two-mode system, you can select HIGH or LOW.

In conventional models with Eaton transmiss ions, the engine brake switch may be located on the shift control knob (see illustration):

For more information on when and how to use the engine brake in

your vehicle, see the engine brake manufacturer ’s owner’s manual that is included with your vehicle.

PB1317 (CAT. NO. 5229 ) —37— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Interaxle Differential Lock Switch

WARNING! Placing the differential lock in the “LOCK” position while your wheels are spinning could cause loss of cont rol or a xle da m age. You could be hurt. Switch to “LOCK” only when your wheels are not spinning.

02905

The interaxle differential allows differential action between the forward rear and the rear rear driving axles. The interaxle differen tial lock switch allows the operator to LOCK or UNLOCK the differential. The guard over this switch prevents you from accidentally activating the lock.

Interaxle Differential” on page 87 for more informat ion on using

See “ your interaxle differential.

Two-Speed Rear Axle (Range) Switch

02906

If your vehicle is equipped with a t wo-speed rear axle, you can select the axle range by t he dash mounted swi tch shown above. The l ow range provides maximum torque for opera ting off-highway. The high range is a faster ratio for highway speeds.

For information on how to operate your two-speed rear axle properly and safely, see PART 7: STARTING & OPERATING THE VEHICLE or check the Index, under Two-Speed Rear Axle (Range) Switch 38.

PB1317 (CAT. NO. 5229 ) —38— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Fifth Wheel Lock (Slider Adjustment) Switch

CAB CONTROL

WARNING!

tor-trailer is in motion.

03031

02907

Do not move of the fifth wheel while the trac-

Movement of the fifth wheel while a tractor-trailer is moving can cause a serious accident. Your load could shift suddenly, causing you to lose control of the vehicle. Never operate the vehicle with the switch in the unlock position. Always inspect the fifth wheel after you lock the switch to be sure the fifth wheel is engaged

Vehicles having an air slide fifth wheel have a fifth wheel slider lock controlled by a switch on the instrum ent panel. By placin g the switch in the unlock position, y ou can slide the fifth wheel to v arious positions to adjust weight distribution. There is a guard over this switch to protect you against accidentally activating or releasing the lock.

VARASHIELD® Wind Deflector Switch

02978

The VARASHIELD Wind Deflector is a roof-mounted, adjustable shield for improving vehicle aerodynamics.

You may have a manu al or an electric VARASHIELD. The electric model is controlled by a dash-mounted toggle switch. If you have one of these, you may vary the VARASHIELD angle from 0 degrees to 50 degrees while the vehicle is stationary or in motion. Th e gauge on the dash indicates the position.

PB1317 (CAT. NO. 5229 ) —39— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

WARNING! Operating the electric VARASHIELD with someone near it can be dangerous. Moving parts could cause an injury to hands, feet, or anything else in the way. Do not operate the VARASHIELD when anyone is near it.

CAUTION: The electric motor of a VARASHIELD is designed for use during moderate, slow speed operation only. Do not operate i t while driving at speeds greater than 35 mph. Do not operate the V ARASHIELD if it is obstructed by ice or packed snow. Additionally, excessive continuous operation could cause the motor to overheat. Do not change the angle continually.

Manual Ad j ust

WARNING! Y ou could fall and be badly injured by trying to climb to the top of the ca b without the right equipment. Always use a ladder or scaffolding to get up to adjust your manual VARA-SHIELD.

If you have the manual VARASHIELD, you will adjust it from the roof of the cab. Move it to the desired angle with the telescoping strut that is secured by a bolt and locknut. Proper VARASHIELD angle is affected by wind, trailer height, and the gap between the tractor and trailer. Usually the VARASHIELD should be down, at 0 degrees, when the tractor is operating without a trailer or pulling a flatbed. With all other trailers, you adjust the VARA-SHIELD to its best angle by noticing the lower manifold boost pressure at cruise (as indicated by the manifold pressure gauge), or the reduction in road dirt deposited on the front of the trailer.

Parking Brake Valve and T ra iler Air Supply Valve

02908

Single Valve

Your parking brake valve is a yellow diamond-shaped knob located on the right-hand control panel of conven tio nal cab models and on

PB1317 (CAT. NO. 5229 ) —40— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

the console panel of COE models. It controls the parking brakes for straight truck or tractor-trailer combinations.

02909

WARNING! Stopping with the parking brake controls can cause a sudden wheel lock-up, loss of control, or can cause you to be overtaken by following vehicles. You could be severely injured. Never pull out the parking brake valve while the vehicle is moving.

To apply all parking brakes, pul l the yellow, or parking b rake, knob out. The truck or tractor parking brakes will set, and the Trailer Air

Supply Valve (red octagon knob) will automatically trip (“pop out”) and set the trailer parking brakes. To release both truck/tractor and trailer parking brakes, push in BOTH yellow and red knobs. For full information on using parking brakes, see the Index, under Brakes.

Heater-Air Conditioning Controls

Y our heat and air conditioning controls are mounted on the dog house instrument panel in COE models and below the right hand instrument panel in conventional models. Additionally, the sleeper compartment may also contain a separate he ating and cooling system with separate controls.

WARNING! Exhaust fumes from the engine contain carbon monox ide, a color l es s and odo r les s gas . Do no t breat he the engine exha ust gas . A poorly maintained, damaged or corroded e xha ust sy ste m can al lo w car bon monoxide to enter the cab or slee per. Entry of car bon mon o xi de in to the cab is also pos sib le from other vehic le s n ear b y. Fa il ur e to pr operly maintai n yo ur vehic le cou ld caus e carbo n mono xide to ente r the cab/sleeper and causes serious illness.

CAUTION: Never idle y our vehic le for prolonged periods of time if you sense that exhaust fumes are entering the cab or sleeper . In vestigat e the cause of the fu mes and correct it as soon as possible. If the vehicle must be driven under these conditions, drive only with the windows slightly open. Failure to repair the source of the exhaust fumes may lead to personal harm.

PB1317 (CAT. NO. 5229 ) —41— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

NOTE: Keep the engine exhaust system and the vehicle’s cab/ sleeper ventilation system properly maintained. It is recommended that the vehicle’s exhaust system and cab/sleeper be inspected

•

By a competent technician every 15,000 miles

•

Whenever a change is noticed in the sound of the exhaust system

•

Whenever the exhaust system, underbody, cab or sleeper is damaged

NOTE: To allow for proper operation of the vehicle ventilation system, keep the inlet grille at the base of the windshield clear of snow, ice, leaves and other obstructions at all times.

NOTE: Do not stay in the vehicle with the engine running or

idling for more than 10 minutes with the vehicle’s Heater and A/C ventilation system in RECIRC or at LOW FAN SPEED. Even with the ventilation system On, running the engine while parked or stopped for prolonged periods of time is not recommended.

NOTE: If y ou are required to idle y our v ehi cl e f o r lo ng perio ds of time, ins tall an auxi liary heater or automatic idle control . These auxi liary devi ces can r educ e fu el c ons umpt ion and s a v e you money.

NOTE: When idling for short periods of time

•

Set the heating or cooling system to Heat or A/C

•

Set the fan to Medium or High speed

•

Set the controls to FRESH AIR

NOTE: If other vehicles are parked next to you idling, move your vehicl e or do not stay in your vehic le f or prolonged periods of time.

To Set the Heater-Air Conditioning Controls

COE: The COE panel contains t wo toggle switches and three sliding levers for

providing cab t empe rature c ontrol i n all weat her con ditions (see i llustration below). A sec ondary panel is located on the up per left wall of the bunk or sleep er and contai ns two togg le switches and a rotary the rmostat switch to control the temperature. The thermostat controls the operation of the blower to maintain temperature within the selected range.

PB1317 (CAT. NO. 5229 ) —42— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

02979

Conventional Cab:

The Conventional cab’s control panel may have up to six controls (four for vehicles without a sleeper unit); see illustration below:

• A rotary knob (A) in the upper left portion controlling the blower

speed with four settings.

• A rotary knob (B) in the upper center portion controlling the move-

ment of air within the cab. This control is continuously variable through five modes (clockwise from left):

- Panel

- Panel/Floor

- Floor

- Defrost/Floor

- Defrost

• A rotary knob (C) in the upper right portion controlling the air tem-

perature.

• A rocker switch (D) in the lower left portion to engage the air condi-

tioner compressor (only vehicles with air conditioning).

PB1317 (CAT. NO. 5229 ) —43— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

• A rocker switch (E) in the lower center portion to select either fresh

or recirculated air mode.

• A rocker switch (F) on the lowe r right portion to send power to the

“bunk” or sleeper control panel (only vehicles with a sleeper unit).

02980

The con ventiona l sleeper c ontrol pan el will h ave three controls (two for vehicles without air conditioning); see next illustration

• A rotary knob (A) in the left portion controlling the blower speed

with four settings.

• A rotary knob (B) in the right portion controlling the air tempera-

ture.

• A rocker switch (C) in the cente r portion to engage the air condi-

tioner compressor (only vehicles with air conditioning).

02981

PB1317 (CAT. NO. 5229 ) —44— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

The cab “bunk” control rocker switch must be ON for the sleeper controls to function.

• To heat the cab, select the desired air mode and set the tempera-

ture knob to hot (the red position on the control) and the blower to whatever speed makes you most comfortable.

WARNING! Do not drive with visibility reduced by fog, condensation, or frost on the windshield. Your view may be obscured, which could result in an injury accident. For clear visibility and safe driving it is extremely important for you to follow the instructions pertaining to the function and use of the ventilation/heating and defogging/def rosting system. If in doubt, consult your dealer. Maximum heating output and fast defrosting can be obtained only after the engine has reached operating temperature.

CAUTION: During extreme cold weather, do not blow hot defroster air onto cold windshields. This could crack the glass. Turn the air flow control lever to Defrost and adjust the fan speed accordingly while the engine warms. If the engine is already warm, move the temperature selector to Cool, then gradually increase the temperature when you see that the windshield is starting to warm up.

• To defog the windshield, select the Defrost mode and turn the

blower speed to high. Set the temperature knob to hot (the red position on the control). The air conditioner is automatically activated to remove moisture from the cab. After the windshield is clear, adjust th e mode, blower speed, and temperature to your comfort.

• To cool the cab, turn on the A/C switch, set the temperature knob

to cool (the blue position on the control), and the blower to high until the cab becomes cool. Then you can turn down the blower if you wish.

For Efficient Cooling:

1. Be sure all heater - air conditioner controls are off.

2. Start the engine. Allow time for warm-up.

CAUTION:

•

A cold compressor can cause refrigera nt to liquefy and warp the valve plates or cause a hydraulic lock. Warm the engine before starting the air conditioner.

•

To avoid damage to the compressor& blower motors, turn off all controls when a system is not in use.

3. Set the air control in the RECI RC mode.

PB1317 (CAT. NO. 5229 ) —45— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

4. Close all windows.

5. Idle the engine between 1000 and 1500 RPM and turn the blower speed control to high.

6. After the cab temperature cools to a comfortable level, adjust the blower speed and controls to keep the desired condition.

NOTE: When the air conditioner isn’t in regular use, operate

it for at least 15 minutes at least once a month or every 5,000 miles(8,000 Km), whichever comes first. This will lubricate the seals in the air conditioning system. The air conditioning system is active when the Defrost mode is selected.

Cigarette Lighter

02912

Lighter

To operate your lighter, push the knob i n. After a few moments the lighter will automatically pop out, ready to use. After use, insert the

knob, but don’t pu sh it in. The lighter circuit is protected by a 20ampere fuse to prev ent damage should the ligh ter get s tuc k in the I N position. If this fuse needs replacement, check to ensure that the lighter is not stuck before replacing the fuse.

WARNING! Do not exceed the voltage/amperage capacity of the cigarette lighter. It could result in a fire. Follow all warnings and instructions in th e operator’s manual for the appliance you are using.

The light er re ceptacle may b e u s ed to power aux iliary equipment that does not draw more than 20 amperes maximum.

Ashtray

WARNING! Paper or other combustible substances in an ashtray could cause a fire. Keep all burnable materials besides smoking materials out of the ashtray.

PB1317 (CAT. NO. 5229 ) —46— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Glove Compartment

02982

To open your g love compartment, push or turn the la tch. To close it, push the cover up and press to latch it. The glove compartment can b e locked. Turn your ignition k ey clockwise (right) to lock and counterclockwise (left) to unlock.

WARNING! An open glove compartment can be dangerous. In an accident or sudden stop, you or a passenger could be thrown against the cover and injured. Keep the cover closed when the vehicle is in motion.

PB1317 (CAT. NO. 5229 ) —47— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Gauges

On the pages that follow you will find descriptions of some of the gauges on your instrument panel. For more information about using them in driv ing, see PART 7: STARTING & OPERATING THE VEHI-

CLE. Also check the Index under the name of the gauge or function

you want to know more about.

WARNING! Do not ignore a warning light or buzzer. These signals tell you something is wrong with your vehicle. It could be a failure in an important system, such as the brakes, which could lead to an accident. Have the appropriate system checked immediately.

Speedometer / Od om eter

02983

The speedometer indicates your vehicle’s speed in miles per hour and in kilometers per hour. The odometer, in the center of the speedometer, records the miles your vehicle has traveled.

T rip Odometer

02984

Some vehicles are also equipped with a trip odometer which tells how many miles the vehicle has gone on a particular trip. To use it, press the button next to the t rip odomete r. The numbers will record 0, an d will then begin to count the miles traveled. To start over, just push the button again.

PB1317 (CAT. NO. 5229 ) —48— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Tachometer

02985

Your tachometer measures the engine speed in revolutions-perminute (RPM). Watching your tachometer is important to driving efficiently. It will let you m atch driving speed and gear selection to the operating range of your engine. If your engine speed gets too high, you can select a higher gear t o lo wer the RP M . If your eng ine speed drops too low, you can select a lower gear to raise the RPM.

Air Application Gauge

02986

This gauge will show you how much air pressure is being applied from your foot brake valve or trailer brake hand valve.

PB1317 (CAT. NO. 5229 ) —49— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Dual Air Pressure Gauge (Air Reservoir)

02987

The dual air pressure gauge indicates the amount of air pressure in the brake system in pounds per square inch (psi). The white pointer shows the front reservoir air pressure, and the red pointer indicat es pressure in the rear reservoir. Ensure the air pressure registers more than 100 psi in both service systems before you move the vehicle.

If the pressure in either or both circuits is too low for normal brake operation (the pointer of one gauge i s in the red sector), a warning light in the panel will glow and the audible alarm will s ound.

WARNING! The air pressu re warning light and the audible alarm indicate a dangerous situation. There is not enough air pressure in the reservoirs for repeated brak-

and the brake system has failed

ing

below 60 psi (414 kPa) the spring brakes could suddenly apply, causing a wheel lockup, loss of control, or your vehicle to be overtaken by following vehicles. You could be in an accident and severely injured.

while you are driving, bring your vehicle to a safe stop right away. If the lig ht and alarm do not turn off at startup, do not try to drive the vehicle until the problem is found and f ixed

If air pressure falls

If these alarms come on

PB1317 (CAT. NO. 5229 ) —50— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Engine Oil Pressure Gauge

02988

It is important to maintain oil pressure within acceptable limits. Your engine manual will give nor m al oper ating pr ess ur es for you r engine.

CAUTION: Continuing to operate your vehicle with insufficient oil pressure will cause serious engine damage

If your oil pressure fails to rise within 10 seconds after your engine starts, stop the engine and determine the cause.

If your oil pressure suddenly drops while you are driving, bring the vehicle to a stop as soon as possible in a safe locat ion off the road and turn off the engine. Wait a few minutes to allow oi l to drain into the oil pan, and then check the oil level. Add oil if necessary. If the problem persists, contact an authorized service center.

Check the engine manufacturer ’s manual for the correct oil pressure ranges for your engine.

Water Temperature Gauge

02989

The water temperature gauge shows the temp erature of the engine coolant. Under normal operating conditions the water temperature gauge should register between 165° and 205° F (74° and 90° C). Under certain conditions, somewhat higher temperatures may be acceptable. But the maximum allowable temperature is 210° F (99° C) with the cooling system pressurized, except for certain special engines. Check your engine manual to be sure.

PB1317 (CAT. NO. 5229 ) —51— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Engine Overheating

WARNING! Do not rem ove the radiat or fill cap while t he engine is hot. Scalding steam and fluid under pressure may escape an d cause ser io us perso nal inju ri es. You could be badly burned.

•

Wait until the coolant temperature is below 122°F (50°C).

•

Protect face, hands, and arms by covering the cap with a large, thick rag to protect against escaping fluid and steam.

•

Carefully and slowly turn the cap one-quarter of a turn

or until it reaches the first stop—allowing excess pressure to escape—push down and turn for final removal.

Wait until the coolant temperature is below 122° F (50° C ). Protect your face, hands, and arms by covering the cap with a large, thick rag to protect you against escaping fluid and steam. Before you completely remove the cap, caref ully and s lowly turn the cap part wa y to allow excess pressure to escape. Then pu sh down an d turn for final removal.

The cooling system may overheat if t he coola nt level is below norma l or if there is a sudden loss of coolant (such as a worn hose splitting). It may also temporarily overheat during severe operating cond itions such as climbing a long hill on a hot day or stoppi ng af te r high-s pee d driving.

If the “Engine Coolant Temperature” warning light comes on, or you have any other reason to suspect the engine may be overheating:

• Stop the vehicle, but DON’T TURN OFF THE ENGINE unless a

low water warning device indicates a loss of coolant.

• With the transmission in neutral, check to be certain the oil pres-

sure gauge reads normal. Increase the engine speed to about 1100 - 1200 RPM, maximum. Return the idle speed to normal

after 2 or 3 minutes. If the warning light doesn’t go off or the temperature gauge doesn’t begin to drop, then turn the engine off.

• If the overheating came from severe operating conditions, the tem-

perature should have cooled by this time. If it has not, stop the engine and let it cool before checking to see if the coolant is low.

PB1317 (CAT. NO. 5229 ) —52— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Fuel Gauge

02990

WARNING! Do not remove a fuel tank cap near an open flame. Hot fuel vapors are combustible and can cause an explosion or fire resulting in injury or death.

The fuel gauge shows the approximate amount of fuel in the fuel tanks. Besides empty and f ull, the gauge also indicates 1/4, 1/2 , and 3/4 of total capacity . You will want to keep your fuel tanks at least half full to reduce condensation of moisture in the tanks. This moisture can damage your engine.

WARNING! Carrying additional fuel containers in your vehic le is dange ro us. Ful l o r e m p t y, t he y may leak,

explode, and cause or feed a fire. Don’t carry extra fuel containers - even empty ones.

Warning Lights and Buzzers

WARNING! Ignoring a warning light or buzzer could lead to an accident. These signals tell you something is wrong with your vehicle. It could be a failure in an important system, such as your brakes. Never ignore a warning signal. Have the appropriate system checked right away.

ABS

Conventional Lamp Cluster

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PART 4: CONTROLS AND DISPLAYS

LOWLOW

CHECK

STATUS

WATER AIR

COE Lamp Cluster

When you turn on your ign it io n, the f ollo w i n g w ill t u r n on for 3 - 5 sec onds, as a test to let you know they are working.

LAMPS:

•Diff Lo c k •Low Wate r

•Water Temp •Left Turn

•Mirror Heat •Load Light

•Brak e Air •High Be am

•Fifth Wheel •Right Turn

•Oil Pressure •Engine Fan

•ABS •Airbag System Warning Light

•Tr a il er ABS

BUZZER: The warning buzzer sounds to let you know some of the systems are working.

OPTIONAL LAMPS: Additional lamps may be operational dependin g on how the truck is e quipped. These wi ll also turn on for th ree seconds as a test to let you know they are working (se e ABS lamp information on page 93). A fter this self-test period, the module operates normally.

The warning lights and bu zzer may indicate some thing is wrong with one of the vital systems on your vehicle. Check the lights frequently, and respond properly as soon as you see one go on. These lights could save you from a serious accident.

DIFF LOCK

ABS

WARNING! Ignoring a warning light could lead to an accident. These signals tell you something is wrong with your vehicle. It could be a failure in an important system, such as the brakes. Never ignore a warning signal. Have the appropriate system checked right away.

PB1317 (CAT. NO. 5229 ) —54— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

T ra nsmission Temperature Gauge

02993

Your Transmission Temperatu re Gauge indicates the temperature of the oil in your transmission . Watch this gauge to know when your transmission is overheating. If it is, ha ve it ch ecke d by an authorized service representative.

Maximum transmission temperature may vary, depending upon the

transmission and type of lubricant. Check your transmission’s owner’s manual.

Forward Drive Axle Temperature Gauge Rear Drive Axle Temperature Gauge

02994

These gauges indicate the temperature of the lubricant in your ve hicle’s axle (s). Th ese temp eratu res will v ary wi th the k ind of load y ou are carrying and the driving conditions you encounter. Maximum axle temperature may vary, depending upon the axle and type of lubricant. Very high temperatures signal a need to have your axle(s)’ lubrication checked.

CAUTION: Driving with very hot temperatures in your rear drive axles can cause serious damag e to axle bearings and seals. Have your axle lubrication checked if you notice a sign of overheating.

PB1317 (CAT. NO. 5229 ) —55— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Manifold Pressure Gauge

02995

Your manifold pressure gauge indicates the power your engine is putting out by showing the amount of turbo boost. If the pressure indicated by your manifold pressure gauge goes down, there may be something wrong w ith your engine. Hav e it checked by a quali fied service person.

Pyrometer

02996

The pyrometer gauge indicates engine exhaust gas temperature. Since it responds almost immediately to changes in exhaust gas temperature, the pyrometer is an excellent indicator of engine output.

Monitor it in conjunction with the tachometer and manifold press ure gauge. The pyrometer can be a useful aid to operating your truck more efficiently and avoiding sudden changes in engine operating

temperature. See your engine owner ’s manual for maximum temperature recommendations.

Ammeter

Your ammet er tells you whether your electrical system is “i n bal ance” and operating normally. If not, it may be drawing power from the alternator (positive reading) or from the batteries (negative reading).

NOTE: Under normal conditions the ammeter will read nearly

“zero.” If it begins to read noticeably above or below the “zero” balance point, have the system check ed out immediatel y. If you do not, you could have a roadside breakdown.

PB1317 (CAT. NO. 5229 ) —56— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Air Filter Restriction Indicator or Gauge

02997

This gauge indicates the condition of the engine air cleaner and is measured by inch es of water (H

O (may vary with system design) and a filter whose life is over will

CAUTION: Continued operation with the Air Filter

Restriction Gauge reading 25” H to the engine. Inspect the filter and replace if neces-

sary. Holes in the paper element render an air cleaner useless and may cause the Air Filter Restriction Gauge to give a false reading, even if the element is clogged. Replace the element if it is damaged.

O). A clean filter should register 7”

O may cause damage

Shift Patt er n D is p l ay

The correct shift pattern for your vehicle appears on your control panel or windshield or on a medallion in the shift knob. It is important that you know more about your transm ission than just the shift pattern. Please read the manufacturer’s manual that is included with your vehicle.

Mirrors

Your vehicle is e quipped with ou tside mirrors to enable you to see t o the sides and behind yo ur vehicle. B e sure th ey are adjuste d properly before y ou drive off. You will have the best fie ld of view to the side if you adjust each mirror so you can just see the side of your vehicle in the inboard part of the mirror.

WARNING! Optional convex outside rear view mirrors make objects appear smaller and farther away than they really are. You could have an accident if you were too close to another vehicle or other object. Keep plenty of space between your vehicle and others wh en you turn or change lanes. Remember that other objects are closer than they seem.

PB1317 (CAT. NO. 5229 ) —57— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

Luggage Compartment(s)

An interior luggage compartment is under the bunk in the Conventional sleeper. The exterior compartment is beneath the bunk, open-

ing from the driver’s side, on the outside of the cab.

WARNING! Carrying objects loose in your cab or sleeper can be dangerous. In a sudden stop, or even going over a bad bump, they could fly forward and strike you or a passenger, possibly causing serious injury. Secure loose objects. Carry any heavy objects in the exterior luggage compartment and close it securely.

Appliances in the Cab

You may decid e to equip your vehicle with a radio, a refrig erator, or other appliances and conveniences. Be sure they are compatible with your truck’s electrical system. Secure them in the cab so they can’t fly loose in a sudden stop.

WARNING! In a sudden stop or collision a heavy object in your cab could strike you or anyone with you. You could be injured or even killed. Secure any appliance (such as a refrigerator or radio) you add to your cab.

UltraSle ep er Table

Follow the procedure below to deploy the table in an UltraSleeper.

1. Pull on the leg loop (see Illustration) until the leg snaps open.

BUNK-UP BELT

BUNK TABLE LATCH

LEFT HAND SOFA BACKREST

BUNK END TRAY

BUNK DOWN STOP HOOP

BUNK TABLE

BUNK

(STOWED)

LOWER REAR WALL UPHOLSTERY PANEL

LEFT HAND BUNK GAS SPRING

LEFT HAND BUNK PIVOT BRACKET

RIGHT HAND SOFA CUSHION

LEG

LEG LOOP

LEG SUPPORT

SOFA SEATBELTS

SLEEPER WALKTHROUGH

RIGHT SIDEWALL

CABINET

LEFT HAND SOFA CUSHION

OPENING

CUPHOLDER TRAY

PB1317 (CAT. NO. 5229 ) —58— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

2. Raise the bunk table latch and pull the table away from the bunk.

3. Lower the table and guide the leg into the leg support, which is bolted to the door jamb of the through-compartment access door (see prev io us illu s t r ation).

Follow the procedure below to stow the table.

CAUTION: To avoid possible damage or injury from an unrestrained table, ensure that the table is latched when in the stowed position.

1. Lift the table.

2. Raise the bunk table latch and stow the table completely in the recess in the bunk.

3. Lower the bunk table latch and snap the table leg in place.

UltraSle ep er Refrige r ato r

Follow the procedure below to operate the refrigerator.

NOTE:

•

For additional information about the refrigerator, refer to the refrigerator owner ’s manual that came with this appli-

ance.

•

During periods of extended refrigerator use, it may be necessary to run the engine to avoid excess drain on the

vehicle’s batteries.

•

Refrigerator cooling ability decreases as sleeper temperature increases.

The main power supply to the refrigerator and cooling fan (located behind the refrigerator) is controlled by a switch labeled "REFRIG/ FAN" located on the sleeper control panel.

• To turn the refrigerator and cooling fan on, move the REFRIG/FAN

switch to ON, then turn the thermostat dial (located inside the refrigerator) clockwise from the OFF setting.

• To turn the refrigerator and cooling fan off, turn the thermostat dial

inside the refrigerator counterclockwise to the OFF setting, then move the REFRIG/FAN switch to OFF.

• To turn only the refrigerator off, turn the thermostat dial counter-

clockwise to OFF.

PB1317 (CAT. NO. 5229 ) —59— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

UltraSle ep er Bunk

Follow the procedure below to deploy the bunk in an UltraSleeper.

CAUTION: To avoid possible damage, do the following before dep lo yin g t he bunk:

•

Ensure that the table is latched in the stowed position and that the right sidewall cabinet do or is latched closed (see previous illustration).

•

Remove all items from the center cupholder tray, bunk down stop tray, and sofa cushions (see previous illustration).

•

Place sofa seatbelts flat on the cushions or stow them under the cushi ons.

•

Remove and stow the left-hand sofa backrest (see previous illustration).

NOTE: Bunk upswing and downswing will be assisted and dampened, respectively, by the bunk gas springs. The amount of assistance and dampening will vary with sleeper temperature: these amounts are reduced in colder temperatures and increased in warmer temperatures.

1. Unlatch the bunk-up belt (see previous illustration) and pull the bunk forward. The bunk will swing down and come to rest in a horizontal position.

2. Latch the bunk in the down position. Ensure the bunk latch

engages. If the bunk latch doesn’t properly engage the down stop bracket hoop as shown below, or if there is too much play between latch & hoop, have the latch adjusted by a Peterbilt dealer.

BUNK RESTRAINT TONGUE

HOOP

THUMB LEVER

LATCH

3. Attach t he bunk restraint end buckles to the bunk rest raint tongues.

PB1317 (CAT. NO. 5229 ) —60— 22-01510 (R12/01)

PART 4: CONTROLS AND DISPLAYS

The UltraSleeper bunk restraint is attached to the sleeper in three locations (see illustration below):

• The bunk front: Access to the bunk is easiest when one or both of

the bunk restraint (buckle) ends are detatched from the bunk restraint tongues.

• The roofbow: The roofbow-mounted tether straps are adjustable

so that the restraint may be tightened up when fully deployed.

• The upper rear wall: The restraint is attached to the upper rear

wall by two removeable mounting bolts.

Roofbow

Upper Rear Wall

Bunk Front

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PART 4: CONTROLS AND DISPLAYS

Follow the procedure below to stow the bunk in an UltraSleeper.

CAUTION: To avoid damage, do the following before stowing the bunk:

•

Ensure that the right sidewall cabinet door is latched closed.

•

Remove all items from the top of the bunk mattress, and arrange bedding so that items will not slide down the mattress and fall be hi nd t he bunk.

NOTE: If the restraint is left unattached from the roofbow and bunk restraint tongues, then it may get pinched behind the pivoting bunk and the rear wall of the sleeper when the bunk is stowed. If this happens, unbuckle the bunk-up belt and rotate the bunk open just enough to reach behind the bunk. Free the restraint net, then rotate the bunk fully down.

1. (Optional) Detach the bu nk restraint end buckles from the bunk restraint tongues.

2. Push in on the thumb lever of the bunk down latch to release the bunk.

3. Lift up the bunk and swing it up to a vertical stowed position.

WARNING! T o avoid possible damage or injury from an unrestrained bunk, always latch the bunk-up belt when the bunk is stowed.

4. Latch the bunk-up belt. If the bunk leans forward when stowed, have the belt adjusted or the gas springs serviced by a Peterbilt dealer.

PB1317 (CAT. NO. 5229 ) —62— 22-01510 (R12/01)

PART 5: SEAT AND RESTRAINT SYSTEMS

Seat

For infor mation on the features and adjustment of the seat, see the

seat manufacturer’s literature included with the vehicle.

WARNING! Do not drive or ride with your seat back in the reclined position. You could be injured by sliding under the seat belts in a collision.

WARNING! Do not adjust the driver’s seat while the vehicle is moving. The seat could move suddenly and unexpectedly and can cause you to lose control of the vehicle. Make all adjustments to the seat while the vehicle is stopped. After adjusting the seat and before driving off, ensure that the seat is firmly latched in position.

Seat Belts And Their Proper Use

Seat (or safety) belts have proven to be the single most effective means available for reducing the risk of ser ious injury and death in motor vehicle accidents. It’s not just an opinion -- it’s a fact: Seat belts save lives.

WARNING ! Do not drive vehicle without your seat belt

and your riders’ belt fastened. Riding without a safety belt properly fastened can lead to increased injury or death in an emergency. Unbelted riders could be thrown into the windshield or other parts of the cab or could be thrown out of the cab. They could strike another person. Injuries can be much worse when riders are unbelted. Always fasten your seat belt

02998

Person In Crash , Unbelted

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PART 5: SEAT AND RESTRAINT SYSTEMS

Shoulder Belt

Your combination shoulder-lap belt needs proper adjustment:

• The lap portion should be worn as low on the hips as possible.

02928

Properly worn belt Improperly worn belt

WARNING! You can be seriously injured if your belt is buckled too high. In a crash, it would apply force to your abdomen, not your pelvic bones. This could cause serious internal injuries. Always wear your seat belt low over your pelvic bones.

• The shoulder portion should fit snugly across your body. It should

always be worn over the shoulde r next to the door. It you put the

belt under your arm, it can’t protect you properly.

02929

Correct (over arm) Inco rrect (under arm)

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PART 5: SEAT AND RESTRAINT SYSTEMS

WARNI NG! Wearing the shoulder belt under your arm could lead to serious injury. In a crash your body would move too far forward, increasing the chance of head and neck injury. And the belt would apply too much force to

the ribs, which aren’t as strong as your shoulder bones. You could also suffer internal injuries. Wear the shoulder belt over your shoulder.

• Be sure, also, that your belt is not too loose. A loose belt could

allow you to slide under it in an accident , and that could bring the belt up around your abdomen.

WARNING! A too-loose seat belt can lead to injury in a crash. It can allow you to fa ll too far forward, possibly causing head and neck injuries. You could strike the wheel or the windshield. Adjust your belt so that there is no more than one inch (25 mm) of slack.

• Watch t hat you don’t twist the belt in the process of putting it on. A

twisted belt won’t work as well to protect you.

02930

Twisted Belt

WARNING! You could be seriously injured by a twisted belt. In a crash, the full width of the belt wouldn’t be pro t ecting y ou. And the twisted belt could cut into your body . Straighten the belt before buckling it. If you can’t, have your dealer or service person fix it.

To co nne ct your sh oulde r-lap be lt: Gra sp the belt tongue and pul l in a smooth, slow motion across your chest and lap. Insert the tongue into the buckle on the inboard side of the seat. Push down until you hear a click. Pull on the belt to make sure it is buckled. Check that it is positioned correctly on your body.

PB1317 (CAT. NO. 5229 ) —65— 22-01510 (R12/01)

PART 5: SEAT AND RESTRAINT SYSTEMS

Komf ort-Lok® Feature

Your Pe terbilt contains a feature designed to eliminate cinching and provide improved saf ety and comf ort. Cinching is the condition where a belt becomes continually tighter around you during a rough, bouncy ride. The need for this feature increase s with rough road cond itions, particularly over long distances.

To eliminate cinching s imply activate the Komfor t-Lok feature at the appropriate time:

1. Fasten your se at belt according to the directions above.

2. You are now ready to activate the Komfort-Lok. Lean forward to pull a little slack (about 1 inch) in the belt. Be sure to allow only a small amount of slack. See the Warning on a loose belt, on the previous page.

02931

Komfort-Lok®

3. When the slack is right, flip the latch cover up, cinching it into place. This locks the Komfort -Lok .

4. To release the Komfort-Lok latch, reach up and pull the latch cover open (down), or simply pull down on the shoulder belt.

5. When you want to get out of the cab, release the latch, then just push the button on the buckle.

PB1317 (CAT. NO. 5229 ) —66— 22-01510 (R12/01)

PART 5: SEAT AND RESTRAINT SYSTEMS

Pregnant Women: Sometimes pregnant women worry that in a crash the seat belt could hurt the baby . But if a woman wears her belt prop-

erly - low over her pelvis, below her abdomen - the belt won’t harm the baby, even in a crash. And remember - the best way to keep an unborn baby safe is to keep the mother safe.

02932A

Pregnant Woman With Belt Properly Worn

Sleeper Bunk Restraints

If your cab is equipped with a sleeper, be sure to use the restraint device. You may have belts which either are over the bunk or cover the opening. Of course, you do not need to use a restraint if you sleep in a parked vehicle. But anyone using the sleeper while the truck is in motion should be restrained in a safety device.

You will notice that if your Peterbilt has an upper bunk, it has no restraint device. This is because no one should ever be in an upper bunk when the vehicle is movin g.

WARNI NG!

•

In an acci dent an unrestrained person lyi ng in a sleeper bunk could be seriously injured. He or she could be thrown from the bunk. Be sure anyone occupying the sleeper is restrained while a vehicle i s moving.

•

Be sure that no one ever rides in the upper bunk. That person would be thrown out in an accident and could be very seriously injured.

Passengers

Anyone riding in your vehicle should wear a seat belt. The responsible operator sees to it that everyone in the vehicle rides safely - and that means with a seat belt.

PB1317 (CAT. NO. 5229 ) —67— 22-01510 (R12/01)

PART 5: SEAT AND RESTRAINT SYSTEMS

Some Oth er Safety Restr ai n t T ips:

Don’t wear belts over rigid or breakable objects in or on your cloth-

•

ing. Such things might be eyeglasses, pens, keys, etc. These could cause injury in an accident.

• Damaged belts in the cab or sleeper must be replaced. Belts that

have been stretched, cut, or worn out may not protect you in an accident.

• Avoid catching belts in the doors or seat hardware. They could be

damaged.

• Don’t modify or disassemble the seat belts in your vehicle. They

won’t be available to keep you and your passengers safe.

• Nev er bleach or dye seat belts; chemicals can weaken them. Do,

however, keep them clean by following the care label on the belts. Let them dry completely before allowing them to retract.

• If any seat belt is not working properly, see an authorized Peterbilt

dealer for repair or replacement.

Tether Belts

Tether belts are installed on suspension seats. They hel p s ecure the seat to the floor to restrain it in case of a sudden stop or an accident.

WARNING! Do not remove, modify, or replace the tether belt system with a different tether system. A failed or missing tether belt could allow a seat base to fully extend in the event of an accident leading to greater injuries or death.

Tether Adjustment

WARNI NG! Failure to adjust tether belts properly can cause excessive movement of the seat in an accident. This could lead to greater injuries for you. Tether belts should be adjusted so that they are taut when the seat is in its most upward and forward position.

WARNING ! Before driving or riding in a vehicle, ensure that there is adequate head clearance at maximum upward travel of seat. Serious injury may occur if head clearance is not adequate. Shorten the tether belt as necessary to provide adequate head clearance.

• Make sure the tether belt is attached to the cab deck and seat

frame. It should be routed through the buckle on each side.

• To lengthen the tether, turn t he buckle to a right angle to the web-

bing. Then pull the buckle. To shorten the tether, pull on the strap .

PB1317 (CAT. NO. 5229 ) —68— 22-01510 (R12/01)

PART 5: SEAT AND RESTRAINT SYSTEMS

Inspection of the Restraint System

WARNI NG! Failure to properl y inspect and maintain restraint systems can lead to serious injury or loss of life. Without periodic inspection and maintenance to detect unsafe conditions, seat restraint components can wear out or not protect you in an accident.

The typical three-point seat systems in passenger cars may seem very similar to the three-point seat belt system in heavy duty vehicles, but there are some key diff erences t hat all users of this s ystem should be aware of:

• In typical passenger vehicle automotive seat belt applications, the

normal life of the vehicles is usually 8 to 10 years and the total mileage frequently does not exceed 125,000 miles (200,000 km). Heavy duty vehicles often see this type of mileage in a ver y sho rt period of time, and accumulation of mileage in excess of 500,000 miles (800,000 km) during the vehicle lifetime is not unu sual.

• A significant difference in the two systems is the amount of move-

ment of webbing in the system. In an automotive application, there is little movement of the seat belt system, except when the user puts on or takes off the belt. In trucks, however, there is almost constant movement of the belt through hardware due to ride characteristics and seats which are designed to move, in order to enhance driver comfort. There can even be movement of the webbing in the seat belt system when the belt in not being used. Relative movement between the seat and the cab, which normally occurs whenever the truck is in operation, can cause wear of the seat belt webbing.

• Environmental conditions represent another major difference in

the systems in automobiles and heavy duty and specialty vehicles. Unlike the automotive environment, heavy duty and specialty vehi -

cles may be very dirty, and have more exposure to the Sun’s damaging ultraviolet rays, thus resulting in a reduction of the life of the

seat belt system. The high mileage asso ciated with heavy duty vehicles and possible wear of the 3-point seat belt system, the continual relative movement of the system, the possible contact with the vehicle seat or other parts of the cab structure, and the potential exposure of this system to severe environmental conditions make it crucial to inspect the threepoint seat belt systems regularly. It is recommended that the seat belt system in a vehicle be inspected every 20,000 miles (32,000 km) or more often if the vehicle is exposed to severe environmental conditions. Any seat belt system that shows cuts, fraying, extreme or unusual wear, significant disc oloration due to UV exposure, abrasion to the seat belt webbing, or damage to the buckle, latch plate, retractor hardware or any other obvious problem should be replaced immediately, regardless of mileage.

PB1317 (CAT. NO. 5229 ) —69— 22-01510 (R12/01)

PART 5: SEAT AND RESTRAINT SYSTEMS

WARNING ! It is important to remember that any time a vehicle is involved in an accident, the entire seat belt system must be replaced. Unexposed damage caused by the stress of an accident could prevent the system from functioning properly the next time it is needed, which could result in severe injury or even death.

One of the most critical areas t o be inspected is the seat belt webbing. Constant movement of the belt actually means the webbing is experiencing wear as it travels in and out of t he retracto r, through the pillar loop web guide and through the various pieces of hardware associated with the belt. The following guidelines detail how to inspect for cuts, fraying, extreme or unusual wear of the webbing, etc. and damage to the buckle, retractor, hardware, or other factors which indicate that belt replacement is necessary.

03004

1. Check the web wear in the system. The webbing must be closely examined to determine if it is coming into contact with any sharp or rough surfaces on the seat or other parts of the cab interior. These areas are typical places where the web will experience cutting or abrasion. Cuts, fraying, or excessive wear would indicate the need for replacement of the seat b elt system.

2. The D-loop web guide is the area where almost constant movement of the seat belt webbing occurs because of relative movement between the seat and the cab.

PB1317 (CAT. NO. 5229 ) —70— 22-01510 (R12/01)

PART 5: SEAT AND RESTRAINT SYSTEMS

3. Check the Komfort Latch™ for cracks or possible damage and that it works properly.

4. Check the buckle and latch for proper operation and to determine if the latch plate is worn, deformed, or damaged.

5. Inspect the retractor web storage device, that is mounted on the floor or B-pillar of the vehicle for damage. The retractor is the heart of the occupant restraint system and can often be damaged if abused, even uninten tionally. Check retractor web storage device operation to ensure that it is not locked up and that it spools out and retracts webbing properly.

6. If adjustable tethers are being used, be sure they are adjusted in accordance with installation instructions. Tethers must also be inspected for web wear, just as with the seat belt systems.

7. Mounting hardware should be evaluated for corrosion, and for tightness of bolts and nuts.

8. Check web in areas exposed to ultraviolet rays from the sun. If the color of the web in these areas is gray to light brown, the physical strength of this web may have deteriorated due to exposure to the sun’s ultraviolet rays; replace the system.

W ARNI NG! Replac e t he ent ir e belt sys t em (retr ac tor and buckle side) if replacement of any one part is necessary. Unexposed damage to one or more components could prevent the system fr om funct ioni ng properly the next time it is needed, which coul d r esu lt in se ve r e inj ury or even dea t h.

If the inspection indicates that any part of the seat belt system requires replacement, the entire system must be replaced, both retractor and buckle side. An installation guide is attached to every replacement belt. This set of instruct ions is entitled “

SEAT BELT INSTALLATION GUIDE.”

instruction guides for suspension and fixed bench seats. Use the proper guide for your type of seat, and follow the instructions very closely. It is vitally important that al l com ponents mu st be remo unt ed back in the same position as the original components that were removed. This will maintain the design integrity of the mounting points for the seat belt assembly.

Once the need for replacement of the seat belt has been determ ined, be certain that it is only replaced with the rec ommended replacement seat belt. The occupant restraint system has been developed and tested specifically for this vehicle. If the vehicle was originally equipped with a lap belt, it cannot be replaced with a three-point shoulder harness system, because the cab mounting points are not structurally designed for a three-point seat belt.

There are separate seat belt

THREE-POINT

PB1317 (CAT. NO. 5229 ) —71— 22-01510 (R12/01)

PART 5: SEAT AND RESTRAINT SYSTEMS

Airbag System

General Information

WARNI NG!

•

Always wear your seat belt. Re lying on the driver airbag alone could lead to more severe injuries in a collision. The airbag supplements your seat belt to provide proper occ upant restraint .

•

Do not place objects, accessory equipment or stickers on or near the airbag module on the steering wheel. Any such objects could increase the risk of personal injury if the vehicle is in a collision severe enough for the airbag to inflate or could prevent the module from depl oying pr operly.

•

Being too close to the steering wheel during airbag deployment could cause possible injury. Airbags need room to inflate. For the best protection

-fasten your seat belt

-sit in a norm a l up ri ght position

-comfortably extend your arms to reach the steering wheel

Your vehicle may be equipped with a driver-side airbag system, other-

wise known as a Supplemental Restraint System (SRS). The driver’s airbag provides supplemental protection to the stan dard 3-point seat belt assembly in a severe frontal collision. For maximum safety, ALL occupants should always wear their seat belts whether or not an airbag is provided at their seating position to minimize the r isk of severe injury or death in the even t of a crash.

your best protection in any collision .

The airbag system is designed to deploy during severe frontal or head-on collisions, where the vehicle collides with an object severe enough to warrant airbag protection. Less severe frontal collisions, collisions from the rear, side, or rollover accidents may not activate the system. This is normal and does not mean the airbag is faulty.

A properly worn se at belt is

CAUTION: If the airbag system warn ing light

stays on, doesn’t come on when you start your vehicle, or comes on while driving the vehicle, take your vehicle to the nearest Peterbilt dealer for service immediately! The airbag system may have a fault that will render the system inoperable.

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PART 5: SEAT AND RESTRAINT SYSTEMS

Airbag System/SRS Description

The airbag system is made up of several components within the cab includin g

• Airbag module - mounted to center of steering wheel

• Sensor/Control system - on the floor aft of the driver sea t

• Airbag (SRS) system warning light in the light bar

• Various electr ical wiring harnesses and connectors

• Seat belts

Airbag Modu le

CAUTION: The airbag module must be replaced by an authorized Peterbilt dealer every 10 years from the air-

bag’s date of installation. Failure to replace the airbag module could result in no ndeployment or in suf fi c ie nt deploymen t .

The driver airbag module is located in the center of the steering wheel and inflates in the event of a serious frontal collision. The module has

the letters “SRS” embossed into it.

27884

The angle of impact of th e colli sion, c rash severity, and type of object impacted play a part in whether the airbag system deploys or not. The driver airbag module is use d as a supplement to the seat belt restraint system. The function of the a irbag is to inflate at a precise calibrated vehicle deceleration level, typically found in higher speed frontal impacts, to provide supplemental protection for the driver. In collisions whe re the airbag does deploy, th e seat belt is needed to help keep the driver in the correct position for the airbag to provide proper protection. The ignition must be on for the airbag to deploy.

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PART 5: SEAT AND RESTRAINT SYSTEMS

Sensor/Control Unit

The sensor/control unit is mounted on the floor of the vehicle behind the driver seat. It detects the rate of deceleration and monitors system function. The control unit has a single point electronic crash sensor. The sensor monitors the crash direction and severity of the impact. When the crash sensor detects an impact severe enough to require the airbag, it activates the inflator. A non-toxic argon ga s is released to inflate the airbag cushion at the proper time. The airbag module trim cover rotates out of the way from the force of the inflating bag as the cushion reaches full size. The cushion inflates, then deflates by venting the argon gas through the a irbag fabric. All this occurs in approximately one second.

Airbag (SRS) System Warning Light

CAUTION: If the airbag system warn ing light

There is an airbag system warni ng lig ht in the warni ng lig ht ba r in the dash. The sy stem perform s self-diagnostics during vehicle star t-up. The light will flash for approximately 5 seconds when the ignition is

turned to the "RUN” or "ST ART" position. When the system is operating correctly, the light w ill go out after 5 seconds.

Airbag Electrical Components

WARNI NG! Do not attempt to repair, probe, or splice any part of the air bag system. Modifications or repairs to any part of the airbag system could result in system failure or sudden, inadvertent deployment of the airbag module and could result in possible injury. One of the components for the airbag electrical system is a clock spring harness located in the hub of the steering column. Repair work should only be performed by an authorized Peterbilt dealer.

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PART 5: SEAT AND RESTRAINT SYSTEMS

To connect the airbag module, sensor/control system, and the airbag warning light, numerous electrical connectors and harnesses are installed in the vehicle. They can be identified by a yellow covering.

There are no se rvi ceable components in the airbag system.

working on the vehicle’s electrical system, ensure done to the SRS electrical components as it may prevent the airbag system from operating properly or may cause it to inadvertently deploy.

CAUTION: Do not remo ve an y steering driveline component. If removal of any steering component occurs, the clock spring harness can be dama g e d resu lti ng in expensive repairs or system failure. Any repair or replacement of steering gear, steering shaft, steering column, or steering wheel must be done by an authorized Peterbilt de aler.

If an Airbag Deployment Occurs

WARNING!

•

The airbag inflator becomes hot during deployment. To avoid b urns im mediately after a deployment, do not place any part of your body on the steering wheel hub.

•

Never attempt to drive your veh i cle if the airbag ha s deployed. Have y our vehicle towed to an authorized Peterbi lt dealer anytime t h e ai rb ag deploys and have the dealer replace the airbag module and check the entire sy stem. The ve hic le may not be saf e to st eer and the system can no longer provide proper protection.

that no damage is

When

CAUTION: If a colli sion causes the airbag to deploy, the nylon airbag cushion material may cause abrasions and/or ski n reddening to the dr iver as the airbag deploys and unfolds itself from the steering wheel. The abrasions are similar to friction rope, carpet, or floor burns. They are not caused by contact with chemicals. They are not permanent and normally heal quickly. However, if the affected areas blister, or have not healed within a few days, consult your doctor.

Vehicle Operation or Modifica tio n

The SRS sen sing unit installed in your vehicle is cal ibrated for a specific cab and sleeper combination vehicle and designated for on-highway operation/service. Any change from the vehicle’s original cab and sleeper combination or operation can cause the airbag not to perform or function proper ly as originally designed. If your vehicle was built with a sleeper unit, the sleeper unit must not be removed. If it is necessary to remove the sleeper and op erate the vehicle, the SRS system must be deactivated by an authorized Peterbilt dealer.

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PART 6: DRIVER’S CHECKLIST

To keep your vehicle in top shape, and to maintain its high level of safety for you, your passengers, and your load, make a thorough

inspection every day before you drive. You’ll save maintenance time later -- and the safety checks could help prevent a serious accident. Please remember, too, that Federal law requires a pre-trip inspec tion and so do commercial trucking companies.

For more infor mation, you can refer to Federal Motor Carrier Safety Regulation 392.7 which tells you that interstate commercial motor vehicles are not to be driven unless the driver is sure that certain parts and accessor ies are in working order.

You aren’t expected to become a professional mechanic. The purpose of your inspections is to find anything that might interfere with the safe and efficient transpor tation o f yourself and your load. If you do find something wrong and can ’t fix it yourself, please have a qualified mechanic fix it right away.

Safe Vehicle Operation

For your safety, as well as those around you, be a responsible driver:

• If you drink, do not drive.

• Do not drive if you are tired, ill, or under emotional stress.

Much has gone into the manufacturing of your Peterbilt, including advanced engineering techniques, rigi d quality cont rol, and d emanding inspections. These manufacturing proces ses will be enh anced by

you—the safe driver—who observes the following:

• knows & understands how to operate a vehicle and all its controls

• maintains the vehicle properly

• uses driving skills wisely

WARNING! Do not drink and drive. Your reflexes, perceptions, an d judgmen t can be affected by even a small

amount of alcohol. You could have a serious—or even fatal accident—if you drive after drinking. Please do not drink and drive or ride with a driver who has been drinking. The use of alcohol, drugs, and certain medications will seriously impair perception, reactions, and driving ability. These circumstances can substantially increase the risk of an accident and personal injury.

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PART 6: DRIVER’S CHECKLIST

The daily checks listed below are the foundation of your overall preventive maintenance program. See PART 8: MAINTENANCE AND

SERVICE for the complete preventive maintenance schedule for your

vehicle.

Approaching the Vehicle

1. Check the overall appearance and condition. Are windows, mirrors, and lights clean and unobstructed?

2. Check beneath the vehicle. Are there signs of fuel, oil, or water leaks?

3. Check for damaged, loose, or m issing parts. Are there parts showing signs of excessive wear or lack of lubrication? Have a qualified mechanic examine any questionable items and repair them without delay .

Checking U n d er th e H ood or Cab

With the engine stopped:

1. Check the engine oil level; top up as necessary. Refer to your

engine’s operating manual for the type of oil to use.

2. Check the engine coolant level while the engine is cold. Top up as necessary with premixed coolant. Refer to the instructions on

page 160

3. Check the engine belts. Refer to the instructions on page 160 to check belt condition and adjust tension.

4. Check brake lines and hoses.

5. Check all other accessories, controls, belts, ho ses, and wiring for condition and adjustment.

6. Check the windshield washer fluid level; top up as necessary (Conventional).

7. Check the power steering fluid reservoir; top up as necessary.

8. Check the steering components (pitman arm; draglink; power steering hoses, et c.)

9. Drain the fuel/water separator.

Checking th e L u ggage Com p artment

1. Check the fire exting uisher charge.

2. Check the road emergency kit. Is it complete?

3. Check the windshield washer fluid level; Top up as necessary (COE).

for adding coolant to the proper level.

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PART 6: DRIVER’S CHECKLIST

Checking Ou tside the Vehicle

WARNI NG!

•

Diesel fuel in the presence of an ignition source (such as a cigarette) could cause an explosion. You could be seriously injured. A mixture of gasoline or alcohol with diesel fuel increases this risk of explosion.

recomme nd ed fo r your en gi ne.

•

Hot fuel vapors are combustible and can cause an expl osion or fire resulti ng in injury or death. Do not remove a fuel tank cap near an open flame.

1. Be sure all wheel studs and cap nuts are secure. Che ck wheel cap nut torque weekly; refer to the instructions on page 152

2. Check tires for condition and proper in flation.

3. Check the front wheel bearing lube level.

4. Check parking (spring) brakes as to the condition and tightness of air lines, breathers, clamp rings & bolts, mounting studs, and rel ease bol ts.

5. Check turn signal operation.

6. Check emergency flashers and exterior lamps.

7. Check the fuel tanks. Is there enough fuel? Are the ta nk caps secure?

8. Visually inspect the fuel tank mounting hardware. Are the tank straps tight? Is the webbing in place?

9. If equipped with fuel tank steps: are they d ama ged or broken? Is the grommet/windlace in place between the tank and side plate? Are bolts missing or loose?

10.Check the air cleaner and muffler(s). Are they tight and secure?

11.Check the trailer connections. Are they secure and the lines clear? If they are not being used, are they stored properl y?

12. Is the trailer spare wheel secure? Inflated?

13.Is the landing gear up and the handle secured?

14.Check the 5th wheel. Is the kingpin locked?

15. Is the sliding 5th wheel locked?

16.Check for loose or missing suspension fasteners.

17. Check springs or other suspension parts for damage such as cracks, gouges, distortions, bulges, or chafing.

18.Check the air system. Are there leaks?

Use only the fuel

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PART 6: DRIVER’S CHECKLIST

19.Drain excess moisture from all air supply tanks. Make sure the drain cocks are closed. This procedure is also required f or ai r supply tanks equipped with automatic drain valves.

20.Check that cab latch or hood hold-downs are hooked.

In - Cab Checklist

CAUTION: To avoid injury while entering or leaving the cab, keep your feet in contact with the steps and your hands on the handhold. Always have three points of contact as you enter or exit a cab. See PART 2: GET-

TING INTO AND OUT OF THE CAB AND FRAME ACCESS of this manual for more information.

1. Adjust the seats.

2. Fasten and adjust safety restraint belts. (See P AR T 5: SEAT AN D

RESTRAINT SYSTEMS or the Index, under Restraint Systems 63.)

3. Sleeper Restraints: Check and inspect condition. (See PART 5:

SEAT AND RESTRAIN T SYST EMS or the Index, under Restraint Systems 63.)

4. Adjust the steering column.

5. Check mirror adjustment.

6. Operate air-powered devices to circulate lubricants.

After Engine Warmup

Check automatic transmission oil (if equipped).

NOTE: The above items should be checked daily, as a min- imum. They are in addition to, not in plac e of Federal Motor Carrier Safety Regulations. T hese may be purchased by writing t o:

Superintendent of Documents U.S. Government Printing Office Washington, DC 20402

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PART 7: STARTING & OPERATING THE VEHICLE

Since each vehicle is custom-equi pped, all engine op eration instructions in this manual are general. You will want to consult the ma nual

for your engine to find out details about your specific engine’s n eeds. You may need to use a slightly different procedure from the one outlined here.

Also check the ATA Truck D r iver’s Handbook in your glove box. It will give you tips on starting, shifting, and driving a truck.

Below are instructions for both nor m al-temp erature starting and co ldweather starting.

Normal Temperature Starting Procedure

When the outside temperature is above 50° F (10° C), you can use the following procedure.

1. Set the parking brake.

2. Put your main transmission in Neutral.

3. Disengage (depress) the clutch (with manual transmission).

4. Turn the key switch to ON.

• If your vehicle is equipped with a digital message center (DMC),

the DMC display will come on in the “Clock” mode.

CAUTION: Never operate the starter motor while the engine is running. The starter and flywheel gears could clash or jam, severely damaging them.

NOTE: Some starters are equipped with overcrank protection.

Check the “Engine Operation and Maintenance Manual” for details.

5. Press the starter button. If the engine does not start within 30 seconds, release the starter but-

ton. To avoid overt axing the starte r motor or the batteries, don’t use the starter for more than 30 second s. Let the star ter motor cool and the batteries recover for two minutes before trying again.

If the engine still won’t star t a fter a couple of tries, check the manual override shutdown valve and fuel lines for possible fuel starvation or air leaks. Starting failure may mean fuel isn’t reaching the injectors.

6. As soon as the engine starts, begin to watch the oil pressure gauge. Check your e ngine manufacturer’s manual for the right pressure for your en gine. If the oil pressure doesn’t rise within a few seconds, stop the engine. Find out what is wrong before restarting the engine.

7. Slowly engage (release) the clutch after the engine has started.

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PART 7: STARTING & OPERATING THE VEHICLE

8. Wait until normal engine oil pressure registers on the gauge before idling or accelerating the engine beyond 1000 RPM.

NOTE: If your vehicle has a DDC engine, and if it has not been started for more than 30 days, squirt about half a cup (120 ml) of clean, specified engine oil into the turbocharger oil inlet port. Use an oil can. This will keep the turbocharger bearings lubricated until the engine oil pressure gets up to normal.

Cold Temperature Starting Procedure

In cold weather, fast engine starting helps relieve the loads on the electrical system and cranking motor. Using the special cold starting equipment will help starting. If you follow a f ew simple guidelines, you will extend the service life of your engine.

•Keep the electrical system in top condition.

•Use the best quality fuel of the recommended grade.

•Use recommended engine lubricating oil.

Ether Metering Equipment

WARNING ! The fluid in ether starting systems is extremely flammable and poisonous. If ignited, it could burn you badly. If you swallow it, it ca n be harmful or fatal.

•

Do not smoke when testing, installing, or servicing an ether starting unit. Service it in a well-ventilated area away from heat, open fla m es, or sparks.

•

If swallowed, do not induce vomiting. Call a physician immediately.

•

Wear goggles to avoid getting fluid in your eyes. Avoid gett ing it on your skin and a void brea thing the fumes. If fluid does get in your eyes or fumes irritate your eyes, flush for 15 minutes with large amounts of clean water. Contact an eye specialist.

•

Do not move or relocate the ether cylinder or tubing from its original installation. It must be mounted to protect it from engi ne exh aust heat and from movi ng parts which could damage it.

•

Do not store the spare cylinder in the cab.

•

In warm weather, when you will not need the ether starting system, remove the ether bottle from your truck and store it safely. Return the protecti ve cap to the bottle m ounting connector.

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PART 7: STARTING & OPERATING THE VEHICLE

In cold weather the engine will start faster and the start er motor will work more easily if ether i s injected into the engine cylinder while th e engine is being cranked. Automatic System When you press your ignition starter button, the cranking motor and the ether system are engaged. When needed, starting fluid is released from a pressurized cylinder, flows th rough a valve and tub-

ing, and sprays from a nozzle in you engine’s air intake system.

Preheater With Glow Plug

If you have a Caterpillar 3306 PCTA or an earl ier model engine, you may have a glow plug. The glow plug preheater aids cold starting by burning fuel in the intake manifold and heating the intake air. This feature can be very helpful if you operate your truck in cold weather.

For more helpful starting informa tion, refer to the engine m anual that came with your vehicle.

Engine Warmup

The pur pose of engine warmup is to allow oil film to be established between pistons and liners, shafts and bearings while your engine gradually reaches operating temperature.

Warmup Procedure

1. After you’ve started your engine, idle it a t approximately 600 RPM while you check

•oil pressure

•air pressure

•alternator output

2. After a few minutes of idling at 600 RPM, increase your idle speed to 900 or 1000 RPM. Continue your warmup. This procedure allows oil to warm and flow freely while pistons, liners, shafts, and bearings expand slowly and evenly. In extremely cold temp eratures, you may have to increase idle speed.

NOTE: In colder climates where the temperature is often below freezing, the warmup for tu rboc harged engi nes is especially important. Chilled external oil lines leading to the turbocharger will slow the oil flow until the oil war m s, reducing oil available for the bearings. Watch the engine oil temperature or pressure gauge for a war mi ng trend before increasing engine idle speed (RPM).

3. Continue the engine warmup until the coolant temperature reaches at least 130° F (54° C). At this temperature, you can use partial throttle. Wait until the coolant temperature is at least 160° F (71° C) before operating at full throttle.

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PART 7: STARTING & OPERATING THE VEHICLE

NOTE: Keep the engine exhaust system and the vehicle’s cab/ sleeper ventilation system properly maintained. It is recommended that the vehicle’s exhaust system and cab/sleeper be inspected

•

By a competent technician every 15,000 miles

•

Whenever a change is noticed in the sound of the exhaust system

•

Whenever the exhaust system, underbody, cab or sleeper is damaged

NOTE: Do not stay in the vehicle with the engine running or

idling for more than 10 minutes with the vehicle’s Heater and A/C ventilation system in RECIRC or at LOW FA N SPEED. Even with the ventilation system On, running the engine while parked or stopped for prolonged periods of time is not recommended.

NOTE: If other vehicles are parked next to you idling, move your vehicl e or do not stay in your vehic le f or prolonged periods of time.

CAUTION: The use of a winterfront can result in excessive engine coolant, oil, and charge air (intake) temperatures, which can lead to overheating and possible engine dam-

age. If you must use a winterfront, refer to the “Engine Operation and Maintenance Manual” for operating r estrictions and recommendations.

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PART 7: STARTING & OPERATING THE VEHICLE

Transmission Warmup

COE Only

WARNI NG! Do not operate this ve h icle if y o u n o tice a gradual or sudden incr ease in cable shift effort or a decrease in the usable travel. Take the vehicle to the nearest authorized Peterbilt dealer for repair. Failure to correct eithe r of t h ese condi tions could result in serious injury or death.

CAUTION: Cables are designed to be contaminant resistant, not contaminant proof. Protect cable from contaminants, chemicals, and physical damage w hich ma y damage the control cable.

NOTE: Shift control cables are lubricated for life and are nonrepairable. The cables cannot be lubricated and/or repaired. If you detect a broken seal, moisture, or if the cable has frozen, the shift cable must be replaced. Do not apply heat to thaw or improve performance of the cables.

In cold weather you may find shifting sluggish when you first sta rt the engine. Transmission warmup is especially important at this time, but it is always a goo d idea to warm up your transmission before starting out on the road. To warm up the transmission lubricating oil during engine warmup, with a single transmission:

• Check that the tran smission is in Neutral.

• Release the clutch pedal.

If you have a two -transmissi on combi nation:

• Put the main transmission in gear.

• Put the auxiliary transmission in N eu t ra l. This w ill allow the trans -

mission countershaft to turn, agitating the oil and warming it.

Idling the Engine

Under most circumstances, idling your engine for long periods merely wastes fuel. In severe arctic weather conditions, however, you may need longer idli ng t o be sur e all parts of y our engine ar e f ully l ubrica ted.

WARNING! To reduce the chance of personal injury and/or vehicle damage from overheated engines, which can result in a fire, never leave the engine idling without an alert driver present. If the engine should overheat, as indicated by the engine coolant temperature light, immediate action is required to correct the condition. Continued unattended operation of the engine, even for a short time, may result in serious engine damage or a fire.

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PART 7: STARTING & OPERATING THE VEHICLE

CAUTION: Do not allow your engine to idle, at low rpm’s

(400–600 rpm), longer than five minutes. Long periods of idling after the engine has reached operating temperatures can decrease engine temperature and cause gummed piston rings, clogged injectors, and possible engine damage from lack of lubrication. The normal torsional vibrations generated can also cause transmission wear.

During the time it takes you to drink a cup of coffee, your engine can

cool as much as 60° F (33° C) below nor mal operating temperature. To keep the engine warm during a shor t break, turn it off. An d don’t allow your engine to idle longer th an five minutes.

Putting The Vehicle In Motion

This section discusses t he clutch and transmission operation to get your Peterbilt underway.

W ARNI NG! D o not ca rr y loo se ob jec ts i n your cab, it can be dangerous. In a sudden stop, or even going over a bump in the road, they could fly through the air and strike you or a passenger. You could be injured or ev en kill ed. Secur e al l loose objects in the cab before moving the vehicle.

Shifting The Transmission

You will find a shift pattern either on a decal in your cab or on a medallion in the shift knob. Ch eck to be sure you know the correct sequence for your particular transmission. Refer to the transmission manual included with your vehicle for complete instructions in the operation of your transmission.

Shifting Gears in a New Vehicle

Shift carefully in a new vehicle. The transmission m ay be a little stiff at first. So be careful to avoid gear clashing.

When you are operating a new vehicle or one that has been exposed to cold weather, you want the transmission lubrican t to circulate and coat the contacting surfaces of the gears. Metal contacting metal in moving parts may seriously damage your transmission. So don’t drive in one gear for long until the transm ission lubricant has had a chance to coat those contacting surfaces.

Operatin g th e C l u tch

“Rid ing” th e C lutch

The clutch pedal is not a footrest. Driving with your foot on the clutch pedal will allow your clutch to slip, causing excessive heat and wear. You can damage your vehicle this way.

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PART 7: STARTING & OPERATING THE VEHICLE

Clutch Travel

CAUTION: Always use first gear or a low speed range to start the vehicle in motion. The use of a higher gear or speed range forces undue strain on the engine, clutch, other transmission components, and may cause damage.

To put your vehicle into motion, push down on the clutch pedal u ntil the clutch brake makes contact. This contact will occur at about 1/2 inch to 1 inch from the end of pedal stroke. Select a gear low enoug h to let your vehicle start forward with the throttle at idle until the clutch is fully engaged.

The total stroke of the clutch pedal is about 10 inches. The first 1 3/4 to 2 inches is free travel. After that is th e release s troke, the part that fully releases the clutch. The la st 1/2 to 1 inch engages the clutch brake. If your vehicle is new, watch the free travel in your clutch carefully for the f irst few hundred miles. As your clutch lining wears and high spot s get worn smo oth, you will get les s fre e travel.

Always start out in a low gear with a ceramic-faced clutch. Starting in higher gears, even with a light load, will cause a very j umpy star t an d excessive wear.

And don’t al low your ve hi cle to roll in the opposite direction at al l during clutch engagement. If you need to star t up on an incline, apply your service brakes before you release the parking brake. Then release your service brakes as y ou engage the clutch and apply throttle .

Release Bearing Wear

When you must idle your engine for any period of time, shift your transmission to neutral and engage the clutch (take your foot off the pedal). This helps preven t unnecessary wear of your clutch release bearing. And it is less tiring for you, too.

Clutch Adjustm ent

Inspect manual and self-adjusting clutches reg ularly to maintain correct clutch adjustment. Have your dealer’s ser vice department perform any adjustments necessary. Do not adjust your clutch by adjusting the external linkage without first checking (and corre cting if necessary) the internal clutch adjustment. Using only the external linkage adjustment could damage the clutch.

Clutch Brake

Your clutch brake is used for stopping gear rotation to let you shift into 1st gear or reverse when your vehicle is at a standstill.

About the last 1/2 to 1 inch of clutch pedal travel activates your clutch brake. So if you are stopped and want to shift directly into 1st or reve rse, depress the clutch pedal until contact with the clutch brake is made to stop transmission gear rotation.

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PART 7: STARTING & OPERATING THE VEHICLE

If you have a butt-tooth condition and can’t shift the transmission, gradually release the clutch. Then the drive gear can roll enough to allow the teeth to line up properly and complete the shift.

CAUTION: Be careful not to apply the cl utch brake while the vehicle is moving. The purpose of the clutch brake is to stop the transmission so that you can shift into a starting gear without grinding. Applying the clutch brake when the vehicle is moving causes a braking effect on the entire vehicle. This wear naturally shortens the service life of your clutch bra ke .

Double Clutching

Whether you are upshifting or down shifting, it is best to double clutch. Double clutching is easier on your transmission and on your engine, helping your vehicle match engine speed with driveline speed and achieving clash-free shifts. To double clutch:

1. Push down the clutch pedal to disengage the clutch.

2. Move the gear shift lever to neutral.

3. Release the pedal to engage the clutch. This lets you control the RPM of the mainshaft gears. Thus you can match the RPM of the mainshaft gears to those of the output shaft.

Upshifts - Let the engine and gears slowdown to the RPM required for the next gear. Use the tachometer to determine optimum RPM for gear engagement.

Downshifts - Press accelerator to increase engine and gear speed to the RPM required in the lower gear. Use the tachometer to determine optimum RPM for gear engagement.

4. Now quickly press the pedal to disengage the clutch. Move the gear shift lever to the next gear speed position.

5. Release the pedal to engage the clutch.

Interaxle Differential

On vehicles with tandem rear axles, the interaxle differential allows each axle to turn independent ly. Differential action between the tandems relieves stress on the rear axles and tires and provides better performance.

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PART 7: STARTING & OPERATING THE VEHICLE

When operating normally on paved, dry su rfaces, keep your truck’s interaxle differential in the UNLOCK position.

02905

Switch In Unlock Position

In the LOCK position, continuous operation on a paved, dry surface stresses the tandem axles, possibly causing internal damage to them.

Shift into the LOCK position to operate on slippery surfaces like

• Ice or snow - with or without tire chains.

• Dirt roads.

• Loose sand, mud, or other off-road conditions.

Switch into LOCK when checking performance on a chassis dynamometer.

WARNING! Do not put the differential lock in the LOCK position while the wheels are spinning freely (slipping), you could lose control of the vehicle or cause axle dam-

age—you could be injured. Switch to LOCK only when the wheels are not spinning.

WARNING! Do not operate the vehicle on dry pavement with the differential locked; it could lead to an injury accident. On dry pavement, you will not be able to steer well with the differential locked. Lock the differential only when operating on surfaces with poor traction, such as wet, slippery roads or loose gravel.

WARNING! Do not use the differential lock during downhill operation or at speeds above 25 mph (40 km/h). When it is engaged under these conditions, your vehicle will exhibit “understeer” handling characteristics. This “understeer” condition will cause your vehicle to not turn as quickly and more steering effort will be required, which can cause an injury accident.

To reduce load on the drive train, ease up on the throttle pedal wh eneve r you shift into LOCK or UNLOCK.

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PART 7: STARTING & OPERATING THE VEHICLE

Dual Range (Two Speed) Axles

If you have this option, dual range axles provide two rear axle ratios for operati ng under heavy loads or off-highwa y as well as for over the road trucking. The Low range provides maximum torque for off-road work. The High range is a faster ratio for highway speeds and conditions. A switch on your instrument panel controls this function. You will notice that it ha s a guard to protect you from activ at i ng i t accidentally.

02906

Range Selector

Here’s how to use your dual range axle:

WARNI NG! Never shift the axle when moving down hill. Engine driveline disengagement may occur, eliminating engine retardation and allowing the wheels to spin faster than the current speed of the engine. This may require severe braking to slow the vehicle down and can result in an injury accident.

1. Unlock the interaxle diffe rential before start ing.

2. Put the Range Selector in the LOW range. Shift the transmission to start the truck moving.

3. Off-Highway: When you are driving on rough terrain and secondary roads, or under a very heavy load, keep the axle in the LOW range. Shift your transm ission to maintain the road speed you want.

4. When you go from off-highway to highway driving, shift the axle to the HIGH range this way:

• Be sure the differential is UNLOCKED.

• Keep the accelera tor down and move the Range Selector lever to

HIGH.

• Keep driving with the accelerator down until you want the axle to

shift.

• Then release the accelerator until the axle has shifted.

• You are now in the HIGH axle range on the highway. Shift the

transmission normally to reach your desired cruising speed.

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PART 7: STARTING & OPERATING THE VEHICLE

5. If you need to downshift the axle for more power:

• Keep the accelerator down & move the Range Selector lever to LOW.

• Keep driving with the accelerator down until you want to downshift

the axle.

• Then release and depress the accelerator pedal quickly to

increase the engine RPM.

• The axle will shift to the LOW range.

Important Tips on Ope rating Your Dual Range Axl e

NOTE: If your v ehicle has an automatic trans missi on, it may be necessary to shift it to the Neutral position momentarily to allow the main differential lock splines to fully engage or disengage.

• To avoid damaging your vehicle, shift the axle at a slower speed

until you are used to driving with the dual range axle.

When driving on a surface with good traction, keep the interaxle differential unlocked. You can drive with t he axle in LOW or HI GH range.

02905

Inter a x l e In U n l ock

• When you are driving with poor traction, lock the differential.

When you have the differential locked, drive with the axle in LOW range only.

02933

Inter a x l e In L o ck

• Always UNLOCK the interaxle differential before shifting the axle

speed range.

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PART 7: STARTING & OPERATING THE VEHICLE

CAUTION: If you shift the axle range with the interaxle differential in LOCK, you could do serious damage to your axles. Never shift the axle range with the differential locked.

• Park the truck with the Range Selector in LOW.

Automatic and Automated Transmissions

An automatic or autom ated t ransmiss ion m akes shifting mu ch eas ier, of course. But because your truck pulls a heavy load, if you have such a transmission, it is important to use it efficiently. For correct operation, see the manual for your automatic or automated transmission included with your vehicle.

WARNING! If your vehicle has a Freedomline™ transmission, be aware that it can roll backwards when stopped on a hill or grade, or when start ing from a stop on a hill or grade. This could cause serious damage or personal injury. Observe the following guidelines:

•When stopped on a hill or grade, press the br ake pe dal.

•When starting from a stop on a hill or grade, quickly remove your foot from th e brake pedal and firmly press on the accelerator pedal.

There is no “park” position. So you will need to apply the parking brake before leaving the cab.

WARNING! Do not leave the cab without applying the parking brake. The tr uc k c oul d r o ll a nd ca use an in jur y a cci den t. Always apply the parking brake before you leave the cab.

Transmission Retarder

02934

Retarder Switch If you have this option, it will act like a brake to slow your vehicle with-

out using the brakes. Take you r foot off the throttle a nd operate the retarder switch. When you do not need full retarder effect, you can

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PART 7: STARTING & OPERATING THE VEHICLE

apply it intermittently (off and on) to cause gradual or par tial slowing. Continuous applicatio n of your retarder will cause your hydraulic fluid to get hotter. Inter m ittent application will help prevent overheating.

WARNING! Relying completely on your automatic transmission hydraulic retarder is dangerous. If your engine shuts down, your retarder will not operate. If you are going fast, or going downhill at any speed, you could lose control and have a serious accident. When you are using your retarder, be ready in an emergency to apply your service brakes suddenly.

Auxiliary Transmission

If you have an auxiliary transmission, see your transmission manufac-

turer’s manual for its proper operation.

If Your Vehicle Must Be Towed

CAUTION: Remove the driveline and axle shafts or lift the driving wheels off the ground before towing the vehicle. You could seriously damage your vehicle by towing it with the driveline connected and the drive wheels on the ground. Worse, when vehicles are towed either by wrecker or piggy-back, the lubricant in the top front of the drive axle will drain to the rear. This will leave the top components dry. The resulting friction will seriously damage them. Always remove the main driveshaft and axle shafts before towing your vehicle.

Returning a Towed Vehicle to Service

You will have to add lubricant to prevent damage after your vehicle has been towed.

1. Into the pinion cage, add 1 pint (.47 liter) of lubricant, OR Into the inter-axle differential, add 2 pints (.94 liter) of lubricant.

See the Index, under Lubricant Specifications, for the lubricant required by each axle.

2. After adding the specified type and amount of lubricant, drive the vehicle. It should be unloaded. Drive 1 to 2 miles (1.5 to 3 km) at a speed lower than 25 mph (40 km/h).

This will thoroughly circulate the lubricant through the assembly.

Anti-Lock Braking System Operating Information

This vehicle may be equipped with an anti-lock braking system (ABS). This ABS reduces the possibility of wheel lock-up. If a wheel is about to lock during braking, the ABS will automatically adjust air pressure to the brake chambers on the appropriate whe el(s) to prevent wheel lock-up. The ABS is automatically turned on when the ignition switch is turned on.

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PART 7: STARTING & OPERATING THE VEHICLE

WARNING! The brake system is a critical vehicle safety system. For the safety of you and others around you, have the vehicle submitted for periodic preventive maintenance checks as well as having any suspected problems immediately checked by an Authorized Ser v ice Center. Failure to properly maintain your brake system can lead to serious injury accidents.

WARNING! Do not drive through water deep enough to wet brake components, as it may cause the brakes to work less efficiently than normal. The vehicle’s stopping distance may be longer than expected, and the vehicle may pull to the left or right when brakes are applied, which could contribute to an accident.

WARNING! Do not rel y on an anti-lock br ake system that is functioning improperly. You could lose control of the vehicle resulting in a se vere accident and per sonal injury. If any ABS lamp goes on while you are driving or stays on after the self-check, that anti-lock system might not be working. That ABS may not function in an emergency. You will still have conventional brakes, but not anti-lock brakes. If any warning lamp indicates a problem, have that ABS checked.

ABS Warning Lamps

Truck/Tractor ABS Warning Lamp

A truck/tractor ABS warning lamp illuminates when the ignit ion switch is first turned on and will remain on until the system self-test has been completed successfully. Normally, this ABS lamp will remain on until a speed of no m ore than 9 mph has been reache d and the speed sensors have been checked for correct output. The lamp should remain off after this point u nless a failure in the system is detected. The truck/tractor ABS lamp is located in the warning lamp cluster (see page 53

PB1317 (CAT. NO. 5229 ) —93— 22-01510 (R12/01)

and page 54).

02999A

PART 7: STARTING & OPERATING THE VEHICLE

CAUTION: If the truck/tractor ABS warning lamp does not illuminate when the ignition is first turned on, there is a problem with the bulb or wiring. The driver should have this checked as soon as possible.

Traile r ABS Warning Lam p

Trucks, tractors, and trailers built on and after March 1, 2001 are equipped with power line communication (PLC) per U.S. FMVSS 121, including a trailer ABS warning lamp in the cab (see page 53

page 54

and

ABS

CAUTIO N: If the traile r ABS warning lamp does not illuminate when the ignition is first turned on, there is a problem with the bulb or wiring. The driver should have this checked as soon as possible.

NOTE: A successsful warning lamp illumination and bulb check at ignition on does not be connected to has trailer ABS. You should personally inspect every trailer to determine its braking system.

A trailer ABS warning lam p will illuminate for a bulb check when the ignition switch is first turne d on - whether or not a trailer is connected to the vehi cle. If th e bulb ch eck is satisfact ory, the lamp w ill next do either of the f ol l owi ng:

1. If no trailer is connected, or if a non-ABS-equipped trailer is connected, the trailer ABS lamp will go off after a few seconds.

NOTES:

•

A “properly connected” ABS-equipped trailer is

-a trailer with PLC hooked up to the J560 connector

-a trailer without PLC that is hooked up to an optional ISO 3731 connector

•

For doubles or triples: PLC does not distinguish between trailer s. An ABS problem in any tr ailer will act ivate the traile r ABS w a rni ng lamp.

PB1317 (CAT. NO. 5229 ) —94— 22-01510 (R12/01)

indicate that the trailer you may

PART 7: STARTING & OPERATING THE VEHICLE

2. If an ABS-equipped trailer is properly connected, the trailer ABS warning lamp will remain illuminated for a few more seconds while the trailer A BS is tes ted.

• If no trailer ABS problems are detected, the lamp will go off.

• If a trailer ABS problem is detected, the lamp will remain on. The

driver should have the trailer’s ABS problem corrected before the vehicle is driven with that trailer attached.

Wheel Spin Control Warning Lamp

Your truck/ tr acto r ABS ma y hav e an acceler ati on sli p regulation (ASR) or automatic traction control (ATC) fea ture. Either of these features is monitored by a wheel spin control warning lamp. In conventional models this lamp is locat ed i n the warning lamp c luster (see page 5 3 COE mod e ls, this la m p is located on the ma in dash:

). In

02935

The Wheel Spin C ontrol war ning lamp will br iefly illuminate and then go out when the ignition switch is first turned on. The Wheel Spin Control warning lam p will illuminate whenever the ASR or ATC system detects drive wheel spin. The lamp will remain illuminated as long as wheel spin is d etected and t he ASR or ATC s ystem is applying the drive wheel brakes or reducing eng ine torque. Do not allow the Wheel Spin Control lamp to remain on continuously for an extended length of time. Extended continuous use of the ASR / AT C can cause overheating of the drive wheel brakes. Engine torque or vehicle speed should be reduced to eliminate wheel spin and prevent excessi ve application of the A SR/ATC system. Except for checking for proper illumination of the ABS and Wheel Spin Control warning lamps when first starting the vehicle, and for monitoring these lamps while driving, no special operating procedures are required. For detailed system description, s ee service literature for your specific ABS t hat was provided with your vehicle.

Digital Message Center

If so equipped, the digital message center (DMC) in a vehicle will detect faults during operations. When a new fault is detected, a LED next to the DIAG key on the DMC’s keypad will illuminate. All faults are either active or inactive (active faults are conditions that still exist).

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PART 7: STARTING & OPERATING THE VEHICLE

• Active faults cannot be erased until they become inactive. They

should be investigated as soon as possible.

• Inactive f aults can be erased by using the CANCEL key on the DMC.

Refer to your DMC operator’s manual for more information.

Bobtail Brake Propor tioning System

NOTE: The following inf ormation is applicable only to tractor configurations built on or after March 1, 1997 and not registered in the United States.

Peterbilt tractors without anti-lock brake systems (ABS) are typically equipped with a bobtail brake proportioning system. When a trailer is not connected, the drive axle brake application pressure will automatically be limited by the proportioning system. When driven in a bobtail mode, these tractors will require greater brake pedal application to provide the equivalent braking to a bobtail tractor not equipped with a proportioning system.

WARNING! Becau se of the increased use of the steer axle brakes when driving bobtail, always ensure the steer axle brakes are functioning and properly adjusted. Failure to do so can lead to decreased braking ability, longer stopping distances , loss of vehicle control, and can cause an accident.

Brake Safety and Emergency

WARNING ! Do not operate the vehicle in the event of a malfunction in any air circuit. T he vehicl e should not be operated until the system is repaired and both braking circuits, including all pneumatic and mechanical components, are working properly. Loss of system air can cause the service brakes not to function resulting in the sudden application of the spring brakes causing wheel lock-up, loss of control, or over take by following vehicles. You could be in an accident and severely injured.

WARNING! Unless you have an anti-lock braking system, always avoid compl etely depressing the service brake pedal, if possible, even during emergency braking. Depressing the brake pedal too aggressively can cause the wheels to lock, which can lead to an uncontrolled skid and could cause an accident.

To stop your vehicle in an emergency, vary the service brake application pressure to provide maximum braking force without locking the wheels. Use engine compression to assist the ser vice brakes; i.e., don’t depress the clutch pedal until the engine reaches idle speed.

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PART 7: STARTING & OPERATING THE VEHICLE

Overh eated Brakes

Under normal braking condi tions, the energy generated will brin g the

internal brake drum temperature to about 500° F (260° C). This is well within the safe zone: The maximum safe temperature of linings for drum type brakes is usual ly about 800° F (427° C).

But if service brakes are used i mproperly or for prolonged periods, internal brake drum temperatures may commonly exceed 800° F (427° C). Such brake overheating may be detected by a burning smell or smoke coming from a drum. If this occurs, you should immediately stop and check for cracked brake drums or lining fires. If neither exists, get back behind the wheel and resume a slow speed as soon as possible to cool the brakes.

Parking Brakes and Their Use

The yellow diamond-shaped knob on your instrument panel cont rols your parking brakes. These are spring brakes which you activate by releasing air pressure from their chambers. When they are not in use, air pressure compresses the springs and releases the brakes. But putting the valve in the Park position exhausts air from t he cham bers and allows the springs t o extend and apply the brakes. Also, if your system air drops below the safe operating level, the spring brakes will apply automatically, bringing your vehicle to a stop.

WARNI NG! On trailers buil t bef ore March 1975 you may not have parking brakes if the trailer reservoir pressure leaks down. If you depend on them to hold your vehicle, they could release, causing a serious accident . These older trailers have emergency brakes not designed for parking. They will apply only if the re is enough trailer

reservoir pressure. Don’t use your trailer emergency brakes for parking. Apply your tractor parking valve too.

0290

Red / Yellow Contro ls

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PART 7: STARTING & OPERATING THE VEHICLE

WARNING! Do not leave the cab without applying the parking brake. The truck could roll and cause an injury accident. Always apply the parking brake before you leave th e cab.

WARNING ! Stopping with the parking brake controls can cause a sudden wheel lock-up, loss of control, or can cause you to be overtaken by following vehicles. You could be severely injured. Never pull out the parking brake valve while the vehicle is moving.

W ARNI NG! Do not use the t rail er hand brake or servi ce

brakes to park and hold an unattended vehicl e—us e the parking brakes. Because service brakes work with air pressure, these brakes could slowly release. Your vehicle could roll, ca using a serious accident . Someo ne coul d be hurt or killed. Never rely on the service brakes to hold a parked vehicle.

WARNING! Ne ver drive y our vehicle w ith the parking brake applied. Always release the parking brakes prior to moving the vehicle. Failure to disengage the parking brakes prior to moving your vehicle could result in excessive heat buildup in the brake system, resulting in a fire.

NOTE: Today’s diesel electronic engines have significant torque and startability power at low RPM. Combinations of engine speed and available torque may over-power the vehicle’s parking brakes.

To app ly all your parking brakes, pull the yellow knob Out. Th e parking brakes will set. And the trailer air supply valve (red octagon knob) will automatically pop out, releasing air pressure and setting the trailer brakes.

CAUTION: Do not try to put the vehicle in motion before pressure in t he syste m r eac he s 100 psi (68 9 kP a) because the wheel s are loc k ed b y t he spring br a ke ac tion. Unnecessary stress and possible brake malfunction could occur if the vehicle is forced to move before the air system reaches 100 psi (689 kPa).

To release your truck or tractor brakes ONLY, push in the yellow

knob. Your trailer will remain parked.

• To release the trailer brakes ONLY, push in the red knob. The truck

or tractor will remain parked.

• To release the full combination of brakes, push in BOTH yellow

and red knobs.

PB1317 (CAT. NO. 5229 ) —98— 22-01510 (R12/01)

Peterbilt Conventional Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

How to Find What You Want

A Special Word about Repairs

Additional Sources of Information

Warnings

Vehicle Safety

Door Lock and Keys

Climbing Onto the Deck Plate

Hood Hold Downs (Conventional Cabs)

Hood Tilt (Conventional Cabs)

Safety Cable

COE Cab Tilt System

To Raise the Cab:

To Lower the Cab

Your Instrument Panel

Typical Conventional Cab Instruments and Controls

Conventional

Typical COE Instruments and Controls

Steering Column-Mounted Controls

Turn Signal and Indicator Lights

Hazard Flasher

Air Horn

High Beam Headlights

Electric Horn

Trailer Brake Hand Valve

Tilt- Telescoping Steering Column

Dash-Mounted Features

Keys and Locks

Ignition Switch

Starter Button

Manual Override for Engine Shutdown

Hand Throttle Control

Headlights

Panel Light Knob

ID and Clearance Lights Switch

Fog Lights Switch

Dome Light Switch

Windshield Wipers and Washers

Wiper

Washer

Intermittent Windshield Wiper Control

Air Suspen sion Defl ate Switch (Du mp Valve)

Engine Fan Switch

Cruise Control Switch

Power Mirror Switch

Mirror Heat Switch

Digital Mess ag e C enter

Brakesaver

Manual Control Lever

Manual and Automatic Control Switch

Jacobs Engine Brake or Cummins “C” Brake Switch

Interaxle Differential Lock Switch

Two-Speed Rear Axle (Range) Switch

Fifth Wheel Lock (Slider Adjustment) Switch

VARASHIELD® Wind Deflector Switch

Manual Ad j ust

Parking Brake Valve and T ra iler Air Supply Valve

Heater-Air Conditioning Controls

To Set the Heater-Air Conditioning Controls

Cigarette Lighter

Ashtray

Glove Compartment

Gauges

Speedometer / Od om eter

T rip Odometer

Tachometer

Air Application Gauge

Dual Air Pressure Gauge (Air Reservoir)

Engine Oil Pressure Gauge

Water Temperature Gauge

Fuel Gauge

Warning Lights and Buzzers

T ra nsmission Temperature Gauge

Manifold Pressure Gauge

Pyrometer

Ammeter

Air Filter Restriction Indicator or Gauge