Grizzly G9961, G9741, G9967Z, G9740Z User Manual

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EXTREME-DUTY PLANERS

MODELS G9740/G9740Z/G9741/G9961/G9967/G9967Z

INSTRUCTION MANUAL

Model G9740 Shown

WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE

OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.

#3978 PRINTED IN TAIWAN

WARNING

Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are:

• Lead from lead-based paints.

• Crystalline silica from bricks, cement, and other masonry products.

• Arsenic and chromium from chemically treated lumber.

Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to fil ter out microscopic particles.

Table Of Contents

SECTION 1: SAFETY ....................................................................................................................... 2

Safety Instructions For Power Tools ..........................................................................................

Additional Safety Instructions For Planers .................................................................................

SECTION 2: GENERAL INFORMATION .........................................................................................

SECTION 3: CIRCUIT REQUIREMENTS ........................................................................................

G9967/G9967Z ........................................................................................................................... 6

G9740/G9740Z ........................................................................................................................... 6

G9741/G9961 ............................................................................................................................. 7

Extension Cords .........................................................................................................................

Grounding ................................................................................................................................... 7

Rewire to 440V ...........................................................................................................................

SECTION 4: MACHINE FEATURES ................................................................................................

About this Section ......................................................................................................................

SECTION 5: SET UP ......................................................................................................................

About this Section ....................................................................................................................

Unpacking ................................................................................................................................ 10

Piece Inventory ........................................................................................................................

Hardware Recognition Chart ....................................................................................................

Clean Up ..................................................................................................................................

Site Considerations ..................................................................................................................

SECTION 6: ASSEMBLY ...............................................................................................................

Beginning Assembly .................................................................................................................

Dust Hood ................................................................................................................................

Table Rollers ............................................................................................................................

Test Run ...................................................................................................................................

SECTION 7: OPERATIONS ...........................................................................................................

Operational Tips .......................................................................................................................

Wood Characteristics ...............................................................................................................

SECTION 8: MAINTENANCE ........................................................................................................

General ..................................................................................................................................... 19

Cleaning ................................................................................................................................... 19

Table ........................................................................................................................................ 19

Lubrication ................................................................................................................................ 19

V-Belt ........................................................................................................................................ 20

Maintenance Log ......................................................................................................................

SECTION 9: SERVICE ADJUSTMENTS .......................................................................................

About Service ...........................................................................................................................

Adjustment Controls .................................................................................................................

Cutterhead Knives ....................................................................................................................

Carbide Cutters ........................................................................................................................

Table ........................................................................................................................................ 26

Feed Rollers & Pressure Bar ...................................................................................................

Feed Roller Tension .................................................................................................................

Chip Deflector ..........................................................................................................................

SECTION 10: CLOSURE ...............................................................................................................

G9740/G9740Z Machine Data Sheet .......................................................................................

G9967/G9967Z Machine Data Sheet .......................................................................................

G9741/G9961 Machine Data Sheet .........................................................................................

G9740/G9740Z/G9967/G9967Z Parts Diagrams and List .......................................................

G9967/G9967Z Wiring Diagrams .............................................................................................

G9740/G9740Z Wiring Diagrams .............................................................................................

G9741/G9961 Wiring Diagrams ...............................................................................................

Warranty and Returns ..............................................................................................................

11 12 13 13

14 14 15 16

17 18

22 22 23 24

29 31 31

33 34 35 36 61 64 67 70

2 4

5 6

SECTION 1: SAFETY

For Your Own Safety Read Instruction

Manual Before Operating This Equipment

The purpose of safety symbols is to attract your attention to possible hazardous conditions. This manual uses a series of symbols and signal words which are intended to convey the level of importance of the safety messages. The progression of symbols is described below. Remember that safety messages by themselves do not eliminate danger and are not a substitute for proper accident prevention measures.

Indicates an imminently hazardous situation which, if not avoided, WILL result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, COULD result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, MAY result in minor or mod-

erate injury. It may also be used to alert against unsafe practices.

This symbol is used to alert the user to useful information about

NOTICE

proper operation of the equipment.

Safety Instructions For Power Tools

1. KEEP GUARDS IN PLACE and in working

order.

2. REMOVE ADJUSTING KEYS AND

WRENCHES. Form habit of checking to

see that keys and adjusting wrenches are removed from tool before turning on.

3. KEEP WORK AREA CLEAN. Cluttered areas and benches invite accidents.

4. NEVER USE IN DANGEROUS ENVIRONMENT. Do not use power tools

in damp or wet locations, or where any flammable or noxious fumes may exist. Keep work area well lighted.

5. KEEP CHILDREN AND VISITORS AWAY. All children and visitors should be kept at a safe distance from work area.

6. MAKE WORKSHOP CHILD PROOF with padlocks, master switches, or by removing starter keys.

7. NEVER FORCE TOOL. It will do the job better and safer at the rate for which it was designed.

8. USE RIGHT TOOL. Do not force tool or attachment to do a job for which it was not designed.

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Safety Instructions For Power Tools

9. USE PROPER EXTENSION CORD. Make

sure your extension cord is in good condi tion. Conductor size should be in accor dance with the chart below. The amperage rating should be listed on the motor or tool nameplate. An undersized cord will cause a drop in line voltage resulting in loss of power and overheating. Your extension cord must also contain a ground wire and plug pin. Always repair or replace exten sion cords if they become damaged.

Minimum Gauge for Extension Cords

LENGTH

AMP RATING 25ft 50ft 100ft

0-6 16 16 16 7-10 16 16 14 11-12 16 16 14 13-16 14 12 12 17-20 12 12 10 21-30 10 10 No

10. WEAR PROPER APPAREL. Do not wear loose clothing, gloves, neckties, rings, bracelets, or other jewelry which may get caught in moving parts. Non-slip footwear is recommended. Wear protective hair covering to contain long hair.

11. ALWAYS USE SAFETY GLASSES. Also use face or dust mask if cutting operation is dusty. Everyday eyeglasses only have impact resistant lenses, they are NOT safety glasses.

12. SECURE WORK. Use clamps or a vise to

hold work when practical. It is safer than using your hand and frees both hands to operate tool.

13. NEVER OVERREACH. Keep proper foot ing and balance at all times.

14. MAINTAIN TOOLS WITH CARE. Keep

tools sharp and clean for best and safest performance. Follow instructions for lubri cating and changing accessories.

15. DISCONNECT TOOLS before servicing and changing accessories, such as blades, bits, cutters, and the like.

16. REDUCE THE RISK OF UNINTENTIONAL STARTING. Make sure switch is in OFF

position before plugging in.

17. USE RECOMMENDED ACCESSORIES.

Consult the owner’s manual for recom mended accessories. The use of improper accessories may cause risk of injury.

18. CHECK DAMAGED PARTS. Before fur ther use of the tool, a guard or other part that is damaged should be carefully checked to determine that it will operate properly and perform its intended func tion. Check for alignment of moving parts, binding of moving parts, breakage of parts, mounting, and any other conditions that may affect its operation. A guard or other part that is damaged should be properly repaired or replaced.

19. NEVER LEAVE TOOL RUNNING UNATTENDED. TURN POWER

not leave tool until it comes to a complete stop.

20. NEVER USE UNDER THE INFLUENCE of alcohol or drugs, or when tired.

21. NEVER ALLOW UNSUPERVISED OR UNTRAINED PERSONNEL TO OPERATE THE MACHINE. Make sure any instruc

tions you give in regards to the operation of the machine are approved, correct, safe, and clearly understood.

OFF. Do

Extreme Duty Planers -3-

Additional Safety Instructions For Planers

1. READ THIS ENTIRE MANUAL BEFORE TURNING THE PLANER ON.

2. ENSURE THAT THE MACHINE IS ON FLAT, STABLE GROUND BEFORE USE.

Any “wobbles” must be corrected by shim ming or blocking before operation.

3. NEVER PLANE MATERIAL OTHER THAN WOOD WITH THIS MACHINE.

4. NEVER POSITION FINGERS OR THUMBS NEAR THE INFEED ROLLER.

5. ENSURE THAT THE PLANER IS PROP ERLY ADJUSTED AND THAT THERE ARE NO LOOSE PARTS BEFORE OPER ATING.

6. PLANE IN THE SAME DIRECTION AS THE GRAIN OF THE WOOD STOCK.

7. ALWAYS STAND TO THE SIDE OF THE PLANER WHILE FEEDING THE WORKPIECE.

8. DO NOT LOOK INTO THE MOUTH OF THE PLANER DURING OPERATION!

10. DO NOT REMOVE MORE THAN 1⁄4" FROM THE SURFACE OF THE WOOD STOCK IN A SINGLE PASS.

11. INSPECT YOUR STOCK BEFORE PLAN ING. Never plane stock with nails, staples

or other foreign objects which may be embedded in the surface. Always properly prepare workpieces before running them through the planer. Do not plane lumber with loose knots or knots that may become loose during planing.

12. DO NOT ATTEMPT TO REMOVE JAMS UNTIL POWER IS DISCONNECTED and

all moving parts have come to a complete stop.

13. DO NOT PLANE WORKPIECES LESS THAN 12" LONG AND

14. DO NOT OPERATE PLANER WITH DULL OR DAMAGED KNIVES.

15. ALWAYS UNPLUG THE PLANER WHENEVER MAKING ANY ADJUSTMENTS that would bring your

hands near the cutterhead.

⁄4" THICK.

9. ALWAYS PROVIDE ADEQUATE INFEED AND OUTFEED SPACE WHEN OPERATING THE PLANER. Always sup

port long pieces of stock on both sides of the planer.

Like all power tools, there is danger associated with planers. Accidents are frequently caused by lack of familiarity or failure to pay attention. Use this tool with respect and caution to lessen the possibility of operator injury. If normal safety precautions are overlooked or ignored, serious personal injury may

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occur.

16. IF AT ANY TIME YOU ARE EXPERIENC ING DIFFICULTIES PERFORMING THE INTENDED OPERATION, STOP USING THE PLANER! Then contact our service

department or ask a qualified expert how the operation should be performed.

No list of safety guidelines can be complete. Every shop environment is different. Always consider safety first, as it applies to your individual working conditions. Use this and other machinery with caution and respect. Failure to do so could result in serious per sonal injury, damage to equipment or poor work results.

SECTION 2: GENERAL INFORMATION

If you have any criticisms that you feel we should address in our next printing, please write to us at

Read the manual before assembly and operation. Become familiar with the machine and its opera tion before beginning any work. Serious per sonal injury may result if safety or operational information is not under stood or followed.

Grizzly Industrial, Inc. is proud to offer the Extreme Duty Planers. These planers are part of Grizzly’s growing family of fine woodworking machinery. When used according to the guide lines stated in this manual, you can expect years of trouble-free, enjoyable operation.

The Extreme Duty Planers are the same machine with the exception of the motor size, electrical phase and cutterhead differences. Please refer to the chart below to distinguish planer differ ences.

These planers are intended for heavy-duty pro fessional use and are capable of operating at 5000 RPM with a 20-40 FPM feed rate.

We are pleased to provide this manual with the Extreme Duty Planers. It was written to guide you through assembly, review safety considerations, and cover general operating procedures. It represents our latest effort to produce the best documentation possible.

the address below:

Grizzly Industrial, Inc.

⁄O Technical Documentation

P.O. Box 2069

Bellingham, WA 98227

Most important, we stand behind our machines. We have an excellent Service Department at your disposal should the need arise. If you have any service questions or parts requests, please call or write to us at the location listed below.

Grizzly Industrial, Inc.

1203 Lycoming Mall Circle

Muncy, PA 17756

Phone:(570) 546-9663

Fax:(800) 438-5901 E-Mail: techsupport@grizzly.com Web Site: http://www.grizzly.com

The specifications, drawings, and photographs illustrated in this manual represent the machine as supplied when the manual was prepared. However, owing to Grizzly’s policy of continuous improvement, changes may be made at any time with no obligation on the part of Grizzly. For your convenience, we always keep current Grizzly manuals available on our website at zly.com. Any updates to your machine will be reflected in these manuals as soon as they are complete.

www.griz-

Description

Motor

Phase

Cutterhead

Extreme Duty Planers -5-

G9967

5 HP

1-Phase

4 Knife

G9967Z

5 HP

1-Phase

Spiral

G9740

⁄2 HP

3-Phase

4 Knife

G9740Z

⁄2 HP

3-Phase

Spiral

G9741

10 HP

3-Phase

4 Knife

G9961

10 HP

3-Phase

Spiral

SECTION 3: CIRCUIT REQUIREMENTS

G9967/G9967Z

The Model G9967/G9967Z Planer is prewired with a 5 HP 220V single-phase motor. Please use the following specs when preparing your shop for the machine, and always have the wiring inspected by a licensed electrician before operat ing your machine.

Total Amperage Draw ........................... 39 amp

Recommended Circuit Breaker ............ 40 amp

Recommended Plug and Receptacle ....... 6-50

Cord ...............................................2-pole, 3-wire

The planer must be connected to a dedicated circuit. It should not share a circuit with any other machine. If frequent circuit failure occurs when using the planer, contact our Service Department.

In addition, you may also “hard-wire” the planer directly to your panel, provided you place a dis connect near the machine. Check the electrical codes in your area for specifics on wiring require ments.

G9740/G9740Z

The Model G9740/G9740Z is prewired with a 71⁄2 HP 220V 3-phase motor, which may be rewired to 440V. Please use the following specs preparing your shop for the machine, and always have the

wiring inspected by licensed electrician before operating your machine.

Total Amperage Draw at 220V .............. 26 amp

Circuit Breaker at 220V ......................... 30 amp

Plug and Receptacle at 220V ................

Total Amperage Draw at 440V .............. 13 amp

Circuit Breaker at 440V ......................... 15 amp

Plug and Receptacle at 440V ................

Cord ..............................................3-pole, 4-wire

The planer must be connected to a dedicated circuit. It should not share a circuit with any other machine. If frequent circuit failure occurs when using the planer, contact our Service Department.

L15-30

L16-20

Figure 1. Typical 6-50 plug and receptacle.

Figure 2. Typical L15-30 plug and receptacle.

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G9741/G9961

Grounding

The Model G9740/G9740Z Planer is prewired with a 10 HP 3-phase motor, which may be rewired to 440V. Please use the following specs preparing your shop for the machine, and always have the wiring inspected by licensed electrician before operating your machine.

Total Amperage Draw at 220V .............. 32 amp

Circuit Breaker at 220V ......................... 35 amp

Plug and Receptacle at 220V ..................

Total Amperage Draw at 440V .............. 15 amp

Circuit Breaker at 440V ......................... 20 amp

Plug and Receptacle at 440V ................

Cord ..............................................3-pole, 4-wire

The planer must be connected to a dedicated circuit. It should not share a circuit with any other machine. If frequent circuit failure occurs when using the planer, contact our service depart ment.

In addition, you may also “hard-wire” the planer directly to your panel, provided you place a lock ing power disconnect near the machine. Check the electrical codes in your area for specifics on wiring requirements.

15-50

L16-20

In the event of an electrical short, grounding reduces the risk of electric shock by providing a path of least resistance to disperse electric current. This tool is equipped with an electric cord that has an equipment-grounding conductor which must be properly connected to a grounding plug. The plug must be plugged into a matching outlet that is properly installed and grounded in accordance with all local codes and ordinances. Improper connections of the electrical-grounding conductor can result in the risk of electric shock.

This equipment must be grounded. Verify that any existing electrical out let and circuit you intend

to plug into is actually grounded. Under no cir cumstances should the grounding pin from any three-pronged plug be removed. Serious injury may occur.

Extension Cords

We do not recommend the use of extension cords on 220V equipment. It is much better to arrange the placement of your equipment and the installed wiring to eliminate the need for exten sion cords.

Figure 3. Typical 15-50 plug and receptacle.

Extreme Duty Planers -7-

Rewire to 440V

3. Remove the old feed motor relay and install

the RHN-18 (1.7-2.5A) relay in its place.

4. Set the dial on the new relay to 2A.

The Model G9740/G9740Z/G9741/G9961 can be rewired from 220V to 440V. Before rewir ing, purchase the Grizzly 440V conversion kit (#P97400120-11).

Please Note—The Model G9967/G9967Z cannot

be rewired to 440V.

The 440V wiring conversion procedure requires rewiring the transformer, installing new overload relays for the feed and elevation motors, setting all the overload relay dials to the correct position, and rewiring the motors.

To rewire the planer:

1. Open the control panel so that you have

access to the electronic components inside.

2. On the transformer, move the wire that is connected to the “220” terminal to the “440” terminal.

5. Remove the old elevation motor relay and install the RHN-18 (1-1.7A) relay in its place.

6. Set the dial to 1A.

7. At the main motor overload relay (5-60A), set

dial to the following amperage, depending on your machine:

• G9740/G9740Z ....................................

• G9741/G9961 ......................................

8. Change the wiring on all three motor terminal boxes to match the diagram on the inside of the terminal box cap (use the wiring diagram pages in the “Reference Info” section at the back of this manual if the diagram is missing from the inside of the cap).

10A 13A

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Table

Cutterhead

Chip Breaker

Rear Feed

Roller

Front Feed

Roller

Anti-Kickback

Claw

Pressure

Bar

Bed

Rollers

Bed Roller

Height Lever

SECTION 4: MACHINE FEATURES

About this Section

Familiarize yourself with the planer controls before turning the machine on. Figures 18 out these controls.

Table Height

and 19 point

Power

Cutterhead

Motor

Power

Indicator

Light

Cutterhead

Lock

Table Roller

Height Control

Figure 19. Adjustment controls.

Figure 18. Control panel.

Figure 6. Planer components.

Feed Motor

Micro-Adjust

Knob

Table Height

Lock

Feed Speed

Control

Extreme Duty Planers -9-

SECTION 5: SET UP

About this Section

The purpose of this section is to guide you through the required steps to get your machine out of its crate and into operating condition.

This machine presents serious injury hazards to untrained users. Read through this entire man ual to become familiar with the controls and operations before start ing the machine!

Wear safety glasses during the entire set up pro cess!

Unpacking

Your machine was carefully packed when it left our warehouse. If you discover the machine is damaged after you have signed for delivery,

please immediately call our Customer Service at (570) 546-9663

Save the containers and all packing materials for possible inspection by the carrier or its agent. Without the packing materials, filing a freight claim can be difficult. If you need assistance determin

ing whether you need to file a freight claim, or with the procedure to file one, please contact our Customer Service at (570) 546-9663.

for advice.

These Planers are heavy machines, up to 1853 lbs. shipping weight. DO NOT over-exert yourself while unpacking or moving your machine—use power equipment to move the machine. Serious person al injury may occur if safe moving methods are not followed.

When you are completely satisfied with the condition of your shipment, you should inventory its parts.

-10- Extreme Duty Planers

Piece Inventory

After all the parts have been removed from the carton, you should have:

G9740/G9741/G9967 (4-Knife Cutterheads)

• Planer Unit 1

• Dust Hood 1

• Combo Wrench 11x13 1

• Combo Wrench 12x14 1

• Combo Wrench 17x19 1

• Hex Wrench 5mm 1

• Knife Setting Jig 1

Part Qty

G9740Z/G9961/G9967Z (Spiral Cutterheads)

• Planer Unit 1

• Dust Hood 1

• T-20 Torx

• Misc. Bag of T-20 Driver Bits 1

• Misc. Bag of T-20 Flat Screws 1

• Pressure Gauge 1

• Reducing Valve 1

• Bracket 1

• Steel Rod (Handle) 1

• Reversible Air Screwdriver 1

• Phillips Bits 2

• Air Coupler 1

• Replacement Carbide Inserts 10

In the event that any nonproprietary parts are missing (e.g. a nut or a washer), we would be glad to replace them, or for the sake of expedi ency, replacements can be obtained at your local hardware store.

Part Qty

Driver 1

Extreme Duty Planers -11-

Hardware Recognition Chart

-12- Extreme Duty Planers

Clean Up

Site Considerations

The unpainted surfaces are coated with a waxy oil to protect them from corrosion during ship ment. Remove this protective coating with a sol vent cleaner or citrus-based degreaser such as Grizzly’s G7895 Degreaser. To clean thoroughly, some parts may need to be removed. For opti

mum performance from your machine, make sure you clean all moving parts or sliding contact surfaces that are coated. Avoid chlo

rine-based solvents as they may damage painted surfaces should they come in contact. Always follow the manufacturer’s instructions when using any type of cleaning product.

Do not use gasoline or other petroleum-based solvents to clean with. They have low flash points which make them extremely flammable. A risk of explosion and burning exists if these pr od uc ts a re u se d.

Many of the solvents commonly used to clean machinery can be toxic when inhaled or ingest ed. Always work in wellventilated areas far from potential ignition sources when dealing with sol vents. Use care when dis posing of waste rags and towels to be sure they do not create fire or environ mental hazards.

FLOOR LOAD

Your Extreme Duty Planer represents a very large weight load in a moderate sized footprint. Most commercial shop floors will be adequate for the weight of the planer. Some floors may require additional support. Contact an architect or struc tural engineer if you have any question about the ability of your floor to handle the weight.

WORKING CLEARANCES

Working clearances can be thought of as the distances between machines and obstacles that allow safe operation of every machine with out limitation. Consider existing and anticipated machine needs, size of material to be processed through each machine, and space for auxiliary stands and/or work tables. Also consider the rela tive position of each machine to one another for efficient material handling. Be sure to allow your self sufficient room to safely run your machines in any foreseeable operation.

LIGHTING AND OUTLETS

Lighting should be bright enough to eliminate shadow and prevent eye strain. Electrical circuits should be dedicated or large enough to handle combined motor amp loads. Outlets should be located near each machine so power or exten sion cords are not obstructing high-traffic areas. Be sure to observe local electrical codes for prop er installation of new lighting, outlets or circuits.

Make your shop “child safe.” Ensure that your workplace is inaccessible to children by closing and locking all entrances when you are away. Never allow visitors in your shop when assembling, adjusting or operating equip ment.

Extreme Duty Planers -13-

SECTION 6: ASSEMBLY

Beginning Assembly

Most of your Extreme Duty Planer has been assembled at the factory, but some parts must be assembled or installed after delivery. We have organized the assembly process into steps. Please follow along in the order presented in this section.

Keep loose clothing out of the way of machin ery and keep hair pulled back.

Disconnect power to the machine when perform ing any maintenance or assembly. Failure to do this may result in serious personal injury.

Dust Hood

A dust hood with a 5" dust port comes with the planer for dust collection purposes. Install the dust hood with M6-1.0 x 10 screws. The dust hood should look like Figure 4 when installed.

Figure 4. Dust hood installed.

Wear safety glasses during the entire assembly process. Failure to com ply may result in serious personal injury.

Planer knives are dangerously sharp! Use extreme caution when working near cutting surfaces. Failure to exercise care while working near knives could result in severe injury.

-14- Extreme Duty Planers

Table Rollers

2. Determine the appropriate height for the type

of stock you are using.

The height of the table rollers will vary, depending on the type of material you intend to plane. When planing rough stock, you will need to set the roll ers high to keep the lumber from dragging along the table. Milled lumber should be planed with the rollers set lower.

To adjust the table rollers correctly:

1. Loosen the lock on the adjustment lever

shown in Figure 17. Pull the lever up to raise the table rollers.

Height

Scale

Lock

The scale at the base of the adjustment lever

is numbered “0”, “1” and “2”. These numbers

represent how many millimeters the top of the rollers are above the surface of the table.

Since 1mm = .03937", figure that each notch

on the scale is approximately .004". The ideal tolerance for the height of the table roll ers is between .002"-.016".

Note—If the table rollers are too high, snipe

or chipping may occur at the ends of the workpiece. Only use the higher settings for rough cut lumber. If you are unsure about which height to use, experiment on scrap lumber by using the trial and error method. Always start at the smaller tolerances and work up.

3. Pull the adjustment lever up to the appropriate scale marks. Secure the adjustment lever by tightening the lock.

Adjustment

Lever

Figure 17. Roller height adjustment controls.

Extreme Duty Planers -15-

Read the entire manual before making any cuts with your planer. Serious personal injury may result if safety or operational information is not understood or followed.

Test Run

Once assembly is complete and adjustments are done to your satisfaction, you are ready to start the machine.

Turn on the power supply at the main panel. Press the START button. Make sure your finger is poised on the is a problem. The planer should run smoothly with little or no vibration or rubbing noises. Strange or unnatural noises should be investigated and cor rected before operating the machine further.

Run the planer for a short time to ensure that the moving parts are working properly with no exces sive vibration. If any problem develops, correct it before attempting to use the machine.

If you cannot locate the source of unusual noises or cannot fix any problems that arise, immediately contact our Service Department at (570) 5469663 for help.

STOP button, just in case there

-16- Extreme Duty Planers

SECTION 7: OPERATIONS

Operational Tips

Keep loose clothing out of the way of machin ery and keep hair pulled back.

Disconnect power to the machine when perform ing any adjustments or maintenance. Failure to do this may result in seri ous personal injury.

• Inspect lumber for defects, warping, cupping, twisting, and foreign objects (nails, staples, imbedded gravel, etc.). If you have any question about the quality of your lumber, do not use it. Remember, wood stacked on a concrete floor can have small pieces of stone or concrete pressed into its surface.

• Use the full width of the planer, Alternate between the left, the right and the middle when feeding lumber into the planer. Your knives will remain sharp much longer.

• Scrape all glue off of joined boards before planing.

Wear safety glasses during all operations on the planer. Failure to com ply may result in serious personal injury.

Always wear a dust mask when operating the plan er. Using this machine produces sawdust which may cause allergic reac tions or respiratory prob lems.

NOTICE

If you are not familiar with how to properly use a planer. WE STRONGLY RECOMMEND that you read books, trade magazines, or get formal training.

• Plane ONLY natural wood fiber (i.e. DO NOT plane wood composites).

• Surface wood with the grain. NEVER feed end-cut or end-grained lumber into your planer.

• DO NOT use boards with knots, splits, cross grain or other obvious blemishes or defects.

They can damage the machine and pose the possibility of operator injury.

• Keep your work area clear.

• Avoid planing wood with a high water con tent. Wood with more than 20% moisture content or wood exposed to rain or snow will plane poorly and cause excessive wear to the knives and the motor. Excess moisture can also hasten rust and corrosion.

• During operation, always use the table height lock knob for consistent and accurate results.

• Always true any cupped or warped stock on a jointer before planing.

Extreme Duty Planers -17-

Wood Characteristics

The species of wood, as well as condition, will affect planing ability—the harder the wood, the more difficult it will be to plane. We have included a list of wood characteristics you may encoun ter when planing, The following descriptions of defects will give you some possible answers to problems that may arise.

snipe is unlikely. More likely, you will be able to reduce it to a tolerance of .002". If snipe under that level is a problem, consider cutting lumber longer that your intended work length and cut off the excess after planing is completed.

Uneven Knife Marks — Uneven knife marks can occur when the chip breaker is set too high. Inspect cutterhead bearings if re-adjustment of the chip breaker fails to remedy the situation.

Chipped Grain (Tear Out) — Usually a result of cutting against the grain, or planing wood with knots or excessive amount of cross grain. Chipped grain can also be caused by dull knives or misaligned chip breaker. Often, chipped grain can be avoided by slowing down the feed rate and by taking shallow cuts, If those options do not work, inspect your lumber and determine if its grain pattern is causing the problem. If the wood does not show substantial crossgrain, inspect your knives for sharpness and inspect the chip breaker for proper alignment.

Fuzzy Grain (Raised Grain) — Usually caused by surfacing lumber with too high of a moisture content. Sometimes fuzzy grain is a characteristic of wood such as basswood. Fuzzy grain can also be caused by dull knives or an incorrect grinding bevel. Check with a moisture meter. If moisture is greater than 20%, sticker the wood and allow it to dry. Otherwise, inspect the knife condition.

Glossy Surface — Usually caused by dull knives taking shallow cuts at a slow feed speed. Surface gloss will usually be accompanied by overheat ing. Lumber will often be scorched and eventually damage to the knives will occur. If the knives are sharp on inspection, increase feed speed or cut ting depth.

Snipe — Occurs when board ends have more material removed them the rest of the board. Usually caused when one or both of the table roll ers are set too high. Can also be caused by the chip breaker or pressure bar being set too high. However, a small amount of snipe is inevitable. Snipe can be minimized by proper adjustment of the planer components, but complete removal of

Chatter Marks — Usually caused by incorrect chip breaker and pressure bar setting heights. Chatter marks can also be caused by running a narrow wood piece through the planer at either the right or left end of the cutterhead. Chatter, like uneven knife marks, will show in the form of a “washboard” look. Chatter marks are more likely to be inconsistent in appearance than uneven knife marks.

Wavy Surface — Caused by poor knife height adjustment, wavy surface appears when one knife is taking deeper cuts than the rest of the knives. Remedy by resetting the knives to a toler ance of approximately .001" from one end to the other.

Pitch & Glue Build-Up — Glue and resin buildup on the rollers and the cutterhead will cause overheating by decreasing cutting sharpness while increasing drag in the feed mechanism. The result can include scorched lumber as well as uneven knife marks and chatter.

Chip Marks — Occur when chips are not prop erly expelled from the cutterhead. The knives catch the chips and drag them across the lum ber being planed. Chips tend to be random and non-uniform (compared to chipped grain). This problem can be caused by exhaust blockage or too much room between the cutterhead and the chip deflector. Using a dust collection system in combination with the planer can help reduce chip marks. Inspect the chip deflector and re-adjust spring tension.

-18- Extreme Duty Planers

SECTION 8: MAINTENANCE

Table

Disconnect power to the machine when perform ing any adjustments or maintenance. Failure to do this may result in seri ous personal injury.

The table and other non-painted surfaces on the Extreme Duty Planer should be protected against rust and pitting. Wiping the table clean after every use ensures that wood dust isn’t allowed to trap moisture against bare metal surfaces.

General

Periodic maintenance on your 20" Extreme Duty Planer Planer ensures its optimum performance. Make a habit of inspecting your planer each time you use it.

Check for the following conditions and repair or replace when necessary.

• Loose mounting bolts.

• Worn switch.

• Worn or damaged cords and plugs.

• Damaged V-belt.

• Any other condition that could hamper the

safe operation of this machine.

Tables can be kept rust-free with regular applica tions of products like Boeshield term storage you may want to consider products like Kleen Bore's Rust Guardit™.

T-9. For long

Lubrication

The Extreme Duty Planers have four lubrication points that need to be lubricated according to planer usage. Always lubricate more often under dusty/dirty conditions. As a general rule, lubricate as follows:

1. Micro-Adjustment Knob — Once a week for heavy use; once a month for moderate use. See Figure 20 for grease fitting loca tion.

Cleaning

Regularly blow out cabinet, feed rollers, chip

breakers and cutterhead with compressed air (always wear safety glasses and a dust mask when doing this) and keep the dust port clear.

Figure 20. Micro-adjust grease fitting.

Extreme Duty Planers -19-

2. Transmission Box — Lubricate after every 12 hours of continuous use. See Figure 21 for location.

Figure 21. Transmission box grease fitting.

3. Table Lifting Gears — Once a week for

heavy use; once a month for moderate use. See Figure 22 for locations.

Avoid getting grease or oil on the V-belts or pulleys. Check the V-belts, as part of a monthly inspection for proper tension and belt condition. Cracking and glazing could result in belt failure. Replace the belt if such conditions appear.

To loosen/tighten belt tension:

1. Thread in the motor mount adjustment bolts

(Figure 23) to loosen the V-belt. Unthread the adjustment bolts to tighten the V-belt.

V-Belt

Figure 23. Motor mount adjustment bolts.

Figure 22. Table lifting gear grease fittings.

4. Chain — Clean and regrease as determined

by visible inspection for dust or grime in the chain grease.

Always wipe off excess grease from all loca tions after lubricating!

-20- Extreme Duty Planers

Maintenance Log

Date

Approximate Hours Of Use

Maintenance Performed

Extreme Duty Planers -21-

Table

Cutterhead

Chip Breaker

Rear Feed

Roller

Front Feed

Roller

Anti-Kickback

Claw

Pressure

Bar

Bed

Rollers

Bed Roller

Height Lever

SECTION 9: SERVICE ADJUSTMENTS

Adjustment Controls

Always disconnect power to the machine before performing ser vice adjustments. Failure to do this may result in serious personal injury.

Figures 5 and 6 point out the primary controls

and components that will be used during the adjustment process. Take a few minutes to famil iarize yourself with these.

Planer knives are dangerously sharp! Use extreme caution when working near cutting surfaces. Failure to exercise care while working near knives could result in severe injury.

About Service

This section is designed to help the operator with adjustments that were made at the factory and that might also need to be made during the life of the machine.

This section is provided for your convenience— it is not a substitute for the Grizzly Service Department. If any adjustments arise that are not described in this manual, then feel free to call the Grizzly Service Department at (570) 546-9663.

Cutterhead Lock

Table Height

Lock

Height Controls

Figure 5. Planer controls.

Micro-Adjust

Height Knob

Similarly, if you are unsure of how to perform any procedure in this section, the Grizzly Service Department will be happy to guide you through the procedures or help in any other way.

-22- Extreme Duty Planers

Figure 6. Planer components.

Cutterhead Knives

The Model G9740/G9741/G9967 features a 4knife cutterhead. The knives are factory set to .071". Unless you are having problems related to the knives or are removing them for sharpen ing/replacement, assume that your knives are adjusted correctly. To be safe, always test the planer with a scrap piece of wood before using expensive stock.

When adjusting, make adjustments accurate to within ±.001" from one side to the other. Improperly adjusted knives can unbalance the cutterhead and shorten the bearing life, as well as produce substandard planing results.

3. Remove the hex nuts and springs from the tension studs shown in Figure 8. This will allow the pressure bar to rotate up and over the cutterhead.

4. Remove the four bolts that attach the pressure bar to the eccentric ring.

Pressure Bar

Tension Studs

Planer knives are dangerously sharp! Use extreme caution when working near cutting surfaces. Failure to exercise care while working near knives could result in severe injury.

To inspect the knife set:

1. Make sure the planer is disconnected

from the power source!

2. Open the top cover to gain access to the

cutterhead. Lock the cutterhead in place with the cutterhead lock as shown in

Cutterhead

Lock

Figure

Figure 8. Pressure bar and tension studs.

5. Without bumping the knife edge, carefully

take the pressure bar out of the planer. You can now access the cutterhead with the knife setting jig.

6. To prepare the knife setting jig, back all four of the screws out of the feet. Adjusting one screw at a time, set the screw even with the surface of the jig foot. Turn the screw exactly 21⁄2" turns (this is approximately .071"), or measure this distance with a caliper. Tighten the check nut, making sure that the screw does not move. Adjust the other three screws by using this same procedure.

7. Place the jig on the cutterhead. If the knife is adjusted right, the feet should touch the cutterhead body on both sides of the knife, and the knife should barely touch the jig.

8. Repeat this inspection for the other two knives.

To adjust the knife set:

1. Before beginning, make sure you have fol-

lowed steps 1-6 from the knife inspection instructions above!

2. Make sure the planer is disconnected

Figure 7. Engaging cutterhead lock.

Extreme Duty Planers -23-

from the power source!

3. Wear heavy leather gloves or place a rag

over the exposed knife to protect your hands if the wrench slips while loosening the gib bolts. Loosen all the gib bolts on one knife.

4. Insert a 4mm hex wrench into the jack screws (accessible from holes in the cutterhead) as shown in Figure 9. Turn these screws to lower the knife enough to clear the jig when it is placed on the cutterhead body.

Figure 9. Adjusting knife jack screws.

5. Turn the jack screws with the hex wrench to

raise the knife so it barely touches the jig. Perform this adjustment on both ends.

6. Tighten the gib bolts on each side just enough to keep the knife from moving—DO NOT fully tighten at this time.

7. Repeat steps 2-6 on the other three knives, then move on to step 8

8. Tighten the gib bolts, with medium pressure, in this order: (1) The two center bolts on each of the four knives, (2) the next two bolts outward from the center of each knife, and (3) the rest of the gib bolts in this man ner until all bolts on all four knives have been tightened with medium pressure.

9. Now final tighten each of the bolts in the same manner as step 8. Tightening the gib bolts two at a time, each knife at a time, will prevent distortion of the cutterhead from over-torquing the gib bolts.

10. Replace all of the removed planer parts and adjust the pressure bar (pages 17-18

)

before operating the planer.

Aftermarket Knife Setting Jigs

To ease the knife adjustment process, con

sider using a Planer Pal

available in the current

Grizzly catalog. Using magnets, a pair of these devices will automatically hold the knife blades within .001" of each other, thereby allowing you to quickly and accurately lock the knife in place.

Carbide Cutters

The Models G9740Z/G9967Z/G9961 feature spiral cutterheads. These spiral cutterheads cut with

bits

indexable carbide inserts which have four cut ting edges. Although only one edge can cut at a time, the inserts can be easily rotated when they get dull, essentially providing four factory sharp edges before requiring replacement. Indexable inserts never need to be adjusted for height, only rotated and securely fastened to the cutterhead.

When rotating cutters, the dot on each cutter is used as a reference point when determining which cutter edges are used, or dull, and which are sharp. Be sure to always rotate the cutters in the same direction (see Figure 10

). Otherwise, the dot will not be an effective reference for deter mining which cutting surfaces are sharp.

When replacing the carbide cutters, the dimen sions are 14mm x 14mm x 2mm, with a 6.5mm bore and 30° relief angles (Model H2334 in the current Grizzly Catalog).

In addition, the spiral cutterhead planers are sup plied with an air wrench for loosening and tight

ening the carbide cutter Torx

screws. This tool is very valuable if you have to rotate or change many of the cutters at one time. T-20 Torx are also included.

-24- Extreme Duty Planers

5. Paying attention to the location of the refer-

ence dot, remove and replace/rotate one cutter at a time, sparingly oil the threads of the Torx tighten the screw with the air wrench.

screw with a light machine oil, and

Reference Dot

Figure 10. Always rotate carbide cutters in the

same direction to keep track of the dull or

damaged edges.

To install/adjust the carbide cutters:

1. Disconnect the planer from the power

source!

2. Open the top cover door to gain access to the cutterhead, and open the left-hand service door to gain access to the cutterhead pulley, so you can safely rotate the cutterhead.

3. Prepare the air wrench (included with your planer) by installing a T-20 Torx necting it to an air compressor regulated to 30 PSI, and setting the air wrench dial to the “2” setting.

bit, con-

Note—Torx

remove with the air wrench can be removed with the supplied T-handle. Carefully insert a Torx “cheater bar.” This should allow you enough leverage to loosen the Torx

screws that are difficult to

bit into the hole on the side of the

screws.

NOTICE

Always rotate each insert in the same direction. When an insert returns to the original position, it is time for replacement.

6. After all the carbide cutters that you adjusted

have been rotated/replaced, adjust the air compressor air pressure to 82 PSI and make sure the air wrench is still at the “2” setting on the dial (this final torque setting will be

the equivalent of 48-50 INCH pounds).

7. Now final tighten the Torx® screws.

Note—This low pressure (torque) setting will

reduce the chance of cross threading the Torx® screw threads as well as correctly pretorque the screws before final tightening.

4. Clean out sawdust from the heads of the Torx® screws that you will loosen.

NOTICE

Remove sawdust from the heads of the Torx® screws before attempting to remove them from the cutterhead. The head of the Torx® screws could become stripped if this is not done.

Extreme Duty Planers -25-

Table

The table movement is critical to the operation of the Extreme Duty Planers. For the feed rollers to work correctly, the table must be parallel with the cutterhead.

3. Set the Rotacator® dial to .000". Place the Rotacator® under the cutterhead on one end. Turn the cutterhead so the plunger on the Rotacator® will contact the cutterhead body as shown in Figure 12. Raise the table up enough for the cutterhead to get a reading on the dial.

We strongly suggest using a Rotacato

r® for mak-

ing adjustments to your planer. This tool is well worth the money, because it provides accuracy within .001". Check with the current Grizzly cata log for details.

As an alternative to using a Rotacator

, construct a block of scrap wood to aid in checking the table. The wood block should be rectangular and should have one side that sits flat on the table. Make the block tall enough to leave adequate working room between the table and the cutterhead, but thin enough to fit between the chip deflector and pressure bar.

To check the table with a Rotacator®:

1. Make sure the planer is unplugged!

2. Models G9740Z and G9967Z skip this step.

For Models G9740/G9967/G9741/G9961, open the left side service door. Locate the cutterhead lock shown in Figure 11. Rotate the pulley and drop (pull up and twist) the cutterhead lock into the THREADED HOLE in the pulley (this should position the cutterhead so the knives are out of the way for table adjustments).

Cutterhead

Lock

Point of

contact

Figure 12. Rotacator measuring cutterhead/

table for being parallel to each other.

4. Move the Rotacator

back and forth to find bottom dead center on the cutterhead. (You will reach bottom dead center when you have the highest reading on the Rotacator

5. Now raise the table up so the Rotacator reads exactly .050", and set the dial to .000".

6. Move the Rotacator

to the other side of the cutterhead and find bottom dead center. If the difference in either direction of the dial is more than .004", then the table should be adjusted.

Figure 11. Engaging cutterhead lock.

-26- Extreme Duty Planers

To check the table with the block of wood:

CUTTERHEAD

TABLE

To adjust the table with the Rotacator®:

1. Make sure the planer is disconnected

from the power source!

2. Models G9740Z and G9967Z skip this step.

For Models G9740 and G9967, open the left side service door. Locate the cutterhead lock shown in Figure 11. Pull up and twist so the end of the lock will drop. Rotate the pulley to line up the cutterhead lock with the THREADED HOLE in the pulley (this should position the cutterhead so the knives are out of the way for table adjustments).

3. Place the block of wood on the table, underneath the cutterhead. Position the block on the left side (point “A” in Figure 13) of the cutterhead.

1. Make sure the planer is disconnected

from the power source!

2. Set the Rotacator® dial to .000". Place the

Rotacator® under the cutterhead on the righthand side (facing front).

3. Turn the cutterhead so the plunger on the Rotacator® contacts the cutterhead body. Raise the table up enough for the cutterhead to get a reading on the dial.

4. Move the Rotacator® back and forth to find bottom dead center on the cutterhead. (You will reach bottom dead center when you have the highest reading on the Rotacator

5. Adjust the table height to make the dial on

the Rotacator to .000". Move the Rotacator

read .050", then set the dial

over to the far left end of the cutterhead and find bottom dead center.

Figure 13. Measure table-to-cutterhead at both

points “A” and “B.”

4. Raise the table up until the top of the block lightly contacts the bottom of the knife or indexable insert, depending on your model.

5. Without moving the table position, slide the block over to the other side (point “B” in

Figure 13

6. If the block will not fit under the cutterhead or if the gap between the block and the cutterhead exceeds .004" (use a feeler gauge to measure this), the table must be adjusted.

6. Locate the two columns underneath the

table. These are covered in flexible rubber sleeves. Underneath the sleeves are adjust ment flanges that allow you to disengage the table columns from the lifting gears.

To adjust the table, you need to disen-

gage the opposite side from that which needs to be adjusted.

7. Pull the rubber sleeve down on the deter-

mined column to expose the table adjust ment flange shown in Figure 14. You may need to cut the plastic cable tie in order to remove the sleeve.

Extreme Duty Planers -27-

Figure 14. Column adjustment flange

underneath table.

8. Loosen the two nuts that secure the table

adjustment flange; this will allow the opposite side of the table to be moved up or down.

9. Turn the fine adjustment knob to raise the

side of the table with the Rotacator

make the dial read .050" on the Rotacator dial. Double check the table-to-cutterhead measurement on the right end to make sure it did not move. Adjust as necessary. The Rotacator® will allow you to easily get each end within

±.001" of each other.

4. Locate the two columns underneath the table. These are covered in flexible rubber sleeves. Underneath the sleeves are adjust ment flanges that allow you to disengage the table columns from the lifting gears.

To adjust the table, you need to disen-

gage the opposite side that needs to be adjusted.

5. Pull the rubber sleeve down on the deter-

mined column to expose the table adjust ment flange shown in Figure 14. You may need to cut the plastic cable tie in order to remove the sleeve.

6. Loosen the two nuts that secure the table adjustment flange; this will allow the opposite side of the table to be moved up or down.

7. Turn the fine adjustment knob to raise the side of the table with the wood block, so the wood block barely touches the cutterhead.

8. Slide the wood block over to the other side to check for consistency. Adjust the table as necessary until each side is even with each other. Use a feeler gauge to check the toler ances.

10. When each end is adjusted properly, tighten all of the nuts at the table mount and clamp. Double check the table-to-cutterhead mea surement to make sure the table did not move.

To adjust the table with the wood block:

1. Make sure the planer is disconnected from the power source!

2. Place the wood block on the side of the table

where the tightest gap exists between the table and the cutterhead.

3. Raise the table so the cutterhead barely

touches the wood block. Slide the wood block to the other side of the table, under the other end of the cutterhead.

9. Tighten the two nuts that secure the table adjustment flange. Double check the table-

to-cutterhead measurement to make sure the table did not move.

10. Pull the rubber sleeve back up to its original position. Be sure to secure it with a new plastic cable tie if you cut the old one. The rubber sleeves must cover the lifting column to keep fine sawdust from building up in the gear grease.

11. Set the table rollers as necessary.

-28- Extreme Duty Planers

Feed Rollers &

Hardwood Blocks

Pressure Bar

The feed rollers are factory set at .040" below the knife edge at bottom dead center. Adjusting them can be a difficult process and is not recommend ed when the machine is new, unless the adjust ments are necessary for a specific application. If you are not getting satisfactory performance from the feed rollers, adjustments are necessary.

5. Open the cover. Remove the nut and spring on the tension stud. Rotate the pressure bar up so it covers the cutterhead.

6. Open the left cabinet door. Loosen the check nuts shown in Figure 16, and turn the adjustment bolts to raise each block up approximately 1⁄2" (enough to be above the

horizontal plane of bottom dead center of the cutterhead knife/insert).

Although not required, we recommend using a Rotacator® for the following setup. Check with the current Grizzly catalog for details.

To set the feed rollers and pressure bar with hardwood blocks:

1. Make sure the machine is disconnected

from power and the knives have been adjusted properly!

2. Obtain a milled piece of hardwood that is

within .002" from one side to another. Rip this piece down the middle. (Two separate boards may also be used if they are within .002" of each other in thickness.)

3. Lower the table rollers below the surface of the table and lock the cutterhead in place.

4. Place the boards on each side of the table as shown in Figure 15, so each board spans from the front of the table to the back.

Roller Blocks

Check Nuts

Adjustment Bolts

Figure 16. Left side roller controls.

7. Open the right cabinet door. Loosen the

check nuts shown in Figure 17, and turn the adjustment bolt and setscrew to raise each block the same amount as those from the previous step.

Roller Blocks

Check Nuts

Figure 15. Board position on table.

Extreme Duty Planers -29-

Adjustment Bolt

Figure 17. Right side roller controls.

Setscrew

8. Working from the back of the planer is easiest because the anti-kickback pawls hang down in the front. Place a piece of newspa per on each wood block so it is both under the cutterhead and accessible from the back of the planer. The newspaper will act as a feeler gauge to help you know when the table is high enough. (Newspaper is about .003" thick and is long enough for adequate access.)

9. Raise the table close to the knife/insert edge. Continue raising the table with the micro adjust knob while constantly checking for resistance on the newspaper. When you get a medium drag on the paper, stop raising the table and remove the newspaper.

This table position will now be your reference

point from which to make the other adjust ments.

10. Lower the feed rollers so they rest on the wood blocks. Back the adjustment bolts out another 1⁄8" (approximately).

11. Notice where the hairline indicator reads on the table height scale. With the micro-adjust ment knob, lower the table approximately 1mm on the scale (1mm = .039").

12. On the right and left sides, raise the adjustment bolts up to the roller blocks and tighten the check nuts. Make sure the adjustment bolts do not move while tightening the check nuts.

To set the feed rollers and pressure bar with

a Rotacator

1. Make sure the planer is disconnected

from power and the knives are adjusted properly.

2. Read the previous instructions about setting

the feed rollers and pressure bar with wood blocks—this will familiarize you with how to access and adjust the feed rollers and pres

sure bar.

3. Engage the cutterhead lock.

4. Place the Rotacator® on the table, under-

neath the cutterhead. Line up the Rotacator plunger on the edge of the knife. Set the dial to .000" and lock in place.

5. Move the Rotacator® directly under the one side of the feed roller and set the plunger on a bottom dead center edge. Adjust the feed roller until the Rotacator

reads .040".

6. Repeat step 4 on each end of each feed roller. Double check for accuracy, then lock

the check nuts in place.

7. Adjust the pressure bar using the same procedure as with the feed rollers.

13. Rotate the pressure bar down to its original position. On the pressure bar, back the stop bolts out enough so that the pressure bar rests on the wood blocks below.

14. Set the stop bolts so they barely touch the planer body and tighten the check nuts to keep them in place.

15. Replace the springs and nuts. Tighten the nuts down on the tension stud so that the top

of the nut is approximately

⁄4" from the top of

the tension stud.

-30- Extreme Duty Planers

Feed Roller Tension

Chip Deflector

The feed roller spring tension is factory set and should require no initial adjustments, unless needed for a special type of stock. If a situation develops where the workpiece does not feed straight, adjustments to one roller may be neces sary. Usually if the board is moving to one side, that side needs more pressure.

Open the left cabinet door and locate the spring above the feed block (directly above the adjustment bolt from the previous instructions). Turn the nut counter-clockwise to increase the spring tension.

In general, rough stock or deeper cuts require more feed rate pressure (more spring tension). Shallow cuts need less feed rate pressure. Too much pressure increases snipe. Find a balance that is right for your application.

The segmented chip breaker is factory set for height, so the only adjustment that can be per formed is to the spring pressure.

To adjust the pressure on the chip breaker segments:

1. Make sure the planer is disconnected

from the power source!

2. Rotate the knurled adjustment rings shown

in Figure 18 either left or right to increase or decrease the spring tension.

Knurled Adjustment Rings

Figure 18. Chip deflector spring pressure controls.

Extreme Duty Planers -31-

SECTION 10: CLOSURE

The following pages contain general machine data, parts diagrams/lists, troubleshooting guide and Warranty/Return information for your Extreme Duty Planer.

If you need parts or help in assembling your machine, or if you need operational information, we encourage you to call our Service Department. Our trained service technicians will be glad to help you.

If you have comments dealing specifically with this manual, please write to our Bellingham, Washington location using the address in the General Information section. The specifica tions, drawings, and photographs illustrated in this manual represent the Extreme Duty Planer as supplied when the manual was prepared. However, due to Grizzly’s policy of continuous improvement, changes may be made at any time with no obligation on the part of Grizzly. Whenever possible, though, we send manual updates to all owners of a particular tool or machine. Should you receive one, add the new information to this manual and keep it for reference.

We recommend you keep a copy of our current catalog for complete information regarding Grizzly's warranty and return policy. If you need additional technical information relating to this machine, or if you need general assistance or replacement parts, please contact the Service Department listed in the Introduction section.

Additional information sources are necessary to realize the full potential of this machine. Trade journals, woodworking magazines and your local library are good places to start.

Operating this equipment has the potential for flying debris to cause eye injury. Always wear safety glasses or goggles when oper ating equipment. Everyday glasses or read ing glasses only have impact resistant lenses, they are not safety glasses. Be certain the safety glasses you wear meet the appropriate standards of the American National Standards Institute (ANSI).

We have included some important safety mea sures that are essential to this machine’s opera tion. While most safety measures are generally universal, Grizzly reminds you that each work shop is different and safety rules should be con sidered as they apply to your specific situation.

The Extreme Duty Planer was specifically designed for wood shaping operations only. DO NOT MODIFY AND/OR USE THIS MACHINE FOR ANY OTHER PURPOSE. Modifications or improper use of this tool will void the war ranty. If you are confused about any aspect of this machine, DO NOT use it until all your questions have been answered, or serious personal injury may occur.

Like all power tools, there is danger associated with the Extreme Duty Planer. Accidents are frequently caused by lack of familiarity or failure to pay attention. Use this tool with respect and caution to lessen the possibility of operator injury. If normal safety precautions are overlooked or ignored, serious per sonal injury may occur.

-32- Extreme Duty Planers

MACHINE DATA

SHEET

Customer Service #: (570) 546-9663 • To Order Call: (800) 523-4777 • Fax #: (800) 438-5901

MODEL G9740/G9740Z

20" EXTREME-DUTY PLANER

Design Type .................................................................................................... Floor Model

Overall Dimensions:

Table Size ....................................................................................................24" x 35

Overall Depth ...........................................................................................................

Overall Width .........................................................................................................

Shipping Weight .............................................................................................. 1788 lbs

Net Weight ...................................................................................................... 1600 lbs

Crate Size ............................................................................

Footprint ..............................................................................................

Capacities:

Maximum Depth of Cut ............................................................................................

Maximum Width of Cut ....................................................................................................

Maximum Cutting Height ............................................................................................

Minimum Stock Thickness .......................................................................................

Minimum Stock Length .............................................................................................

Cutterhead Diameter ...............................................................................................

Cutterhead Speed ........................................................................................ 5000 RPM

Cuts per Minute ..................................................................................................

Feed Rate ................................................................................................ 20 - 40 FPM

Cuts Per Inch ...............................................................................................41.6 - 83.3

Construction:

Table ................................................................................. Precision-Ground Cast Iron

Power Feed Rollers ..................................Steel, Segmented Infeed, Polished Outfeed

Cutterhead (G9740) ...................................4 Knife, High Speed Steel, 20" x 1

Cutterhead (G9740Z) ............................................. Spiral w/Indexable Carbide Inserts

465⁄8" L x 40" W x 451⁄2" H

401⁄2" W x 30" D

36"

423⁄8"

⁄16"

20"

10"

45⁄8"

20,000

⁄8" x 1⁄8"

⁄2"

9" ⁄4"

Motors:

Cutterhead Motor .............................. 71⁄2 HP, Three-Phase ⁄ 220/440V

Amps .................................................................................................................... 20/10

Feed Motor ............................................................................................................ 1 HP

Amps ..................................................................................................................

Table Lift Motor ....................................................................................................

Amps ..................................................................................................................

Cutterhead Power Transfer ........................................................................... Belt Drive

Motor Bearings .................................................... Shielded & Lubricated Ball Bearings

Features:

........................................................................................................Table Height Scale

.................................................................................Micro Adjustment of Table Height

.............................................................................................. Segmented Chip Breaker

........................................................................................................Variable Feed Rate

...................................................................................................................5" Dust Port

............................................................................................. Convenient Control Panel

Specifications, while deemed accurate, are not guaranteed.

3.7/1.9

⁄2 HP

1.8/0.9

Extreme Duty Planers -33-

MACHINE DATA

SHEET

Customer Service #: (570) 546-9663 • To Order Call: (800) 523-4777 • Fax #: (800) 438-5901

MODEL G9967/G9967Z

20" EXTREME DUTY PLANER

Design Type .................................................................................................... Floor Model

Overall Dimensions:

Table Size ....................................................................................................24" x 35

Overall Depth ...........................................................................................................

Overall Width .........................................................................................................

Shipping Weight .............................................................................................. 1807 lbs