Toro 7066 User Manual

Preface

The purpose of this publication is to provide the service technician with information for troubleshooting, testing andrepairof major systemsandcomponents on thePro Sweep (Model 07066).

REFER TOTHE OPERATOR’SMANUAL FOR OPERATING, MAINTENANCE AND ADJUSTMENT INSTRUCTIONS. Spaceis providedin Chapter 2of this book to insert the Operator’s Manualand Parts Catalog for your machine. Additional copies of the Operator’s Manual and Parts Catalog are available on the internet at www.Toro.com.

TheToroCompany reservesthe rightto change product specifications or this publication without notice.

Part No. 10179SL

Service Manual

(Model 07066)

Pro Sweep

This safety symbol means DANGER, WARNING, or CAUTION, PERSONAL SAFETY INSTRUCTION. When you see this symbol, carefully read the instructions that follow. Failure to obey the instructions may result in personal injury.

NOTE: ANOTE willgive general information about the

correct operation, maintenance, service, testing or repair of the machine.

IMPORTANT: The IMPORTANT notice will give im portantinstructionswhichmustbefollowedtoprevent damage to systems or components on the machine.

E The Toro Company -- 2011

This page is intentionally blank.

Pro Sweep

Chapter 1 -- Safety

Safety Instructions 1 -- 2..........................

Jacking Instructions 1 -- 4.........................

Securing Pro Sweep to Tow Vehicle 1 -- 5...........

Safety and Instruction Decals 1 -- 5................

Chapter 2 -- Product Records and Maintenance

Product Records 2 -- 1...........................

Maintenance 2 -- 1...............................

Equivalents and Conversions 2 -- 2................

Torque Specifications 2 -- 3.......................

Chapter 3 -- Hydraulic System

General Information 3 -- 2........................

Hydraulic Schematic 3 -- 7........................

Hydraulic Flow Diagrams 3 -- 8....................

Troubleshooting 3 -- 16...........................

Service and Repairs 3 -- 22.......................

PARKER TORQLINK

SERVICE PROCEDURE

Chapter 4 -- Electrical System

General Information 4 -- 2........................

Special Tools 4 -- 2..............................

Troubleshooting 4 -- 3............................

Safety Interlock System 4 -- 6.....................

Adjustments 4 -- 7...............................

Component Testing 4 -- 8.........................

Service and Repairs 4 -- 18.......................

Chapter 5 -- Chassis

Specifications 5 -- 2..............................

General Information 5 -- 3........................

Service and Repairs 5 -- 4........................

Chapter 6 -- Electrical Diagrams

Electrical Schematic 6 -- 3........................

Circuit Drawings 6 -- 4............................

Wire Harness Drawings 6 -- 11....................

SafetyProduct Records

and Maintenance

System

Hydraulic

SystemDiagrams

Electrical

Chassis

Electrical

Pro Sweep

This page is intentionally blank.

Pro Sweep

Chapter 1

Table of Contents

SAFETY INSTRUCTIONS 2......................

Before Operating 2............................

While Operating 2.............................

Maintenance and Service 3....................

JACKING INSTRUCTIONS 4.....................

SECURING PRO SWEEP TO TOW VEHICLE 5....

SAFETY AND INSTRUCTION DECALS 5..........

Safety

Pro Sweep Page 1 -- 1 Safety

Safety Instructions

The Pro Sweep is designed and tested tooffer safe service when operated and maintained properly. Although hazard control and accident prevention partially are dependent upon the design and configuration of the machine, these factors are also dependent upon the awareness, concern and proper training of the personnel involved in the operation, transport, maintenance and storage of the machine. Improper use or maintenanceof themachine canresult ininjury or death. To reduce the potential for injury or death, comply with the following safety instructions.

Before Op erating

WARNING

To reduce the potential for injury or death, complywith the following safetyinstructions.

1. Read and understand the contents of the Operator’s Manual before operating the machine. Become familiar with the controls and know how to stop the sweeper quickly. Additional copies of the Operator’s Manual are available on the internet at www.Toro.com.

2. Keep all shields, safety devices and decals inplace. If a shield, safety device or decal is defective, illegible or damaged, repair or replace it before operating the machine.

3. Make sure that any loose nuts, bolts or screws are tightened toensurethat themachine is insafeoperating condition.

While Operating

1. Operator should be in the operators position when operating the tow vehicle and sweeper.Stay away from the sweeper when the brush is engaged.

2. Make sure that hitch pin isproperly positioned intow vehicle and sweeper. Hitch pin should be secured with hairpin clip.

4. Make sure that the tow vehicle is carefully selected to assure the best performance and safe operation of the Pro Sweep.

5. Assuresweeper interlocksystem functionscorrectly so sweeper brush does not rotate unless sweeper is positioned below the transport position.

6. Make sure that operator is familiar with tow vehicle operation.

6. While operating, the Pro Sweep may exceed noise levels of 85dB(A) at the operator position. Hearing protection is recommended for prolonged exposure to reduce the potential of permanent hearing damage.

7. Before leaving the operator’s position of the tow vehicle:

3. Donotrun tow vehicleengineinaconfinedareawithout adequateventilation. Exhaust fumes arehazardous and could possibly be deadly.

4. Do not touch tow vehicle engine, muffler or exhaust pipe while engine is running or soon after it is stopped. These areas could be hot enough to cause burns.

5. If abnormal vibration is detected, stop tow vehicle and sweeper immediately and determine source of vibration. Correct problems before resuming the use of sweeper.

Safety

Page 1 -- 2

A. Stop sweeper brush by shutting off vehicle hydraulic flow to the sweeper.

B. Make sure that dump hopper is lowered. C. Ensure that vehicletractionleverisin neutral,ap-

ply parking brake, stop engine and remove key from ignition switch.

8. Position sweeper on level surface, empty hopper and chock sweeper wheels before disconnecting Pro Sweep from tow vehicle.

Pro Sweep

Maintenance and Service

1. Before servicing or making adjustments, empty Pro Sweep hopper and position sweeper on alevel surface. Chock sweeper wheels to prevent it from moving. If sweeper is attached to tow vehicle, apply tow vehicle parking brake, stop engine and remove key from the ignition switch.

2. Make sure machine is in safe operating condition by keeping all nuts, bolts and screws tight.

3. Make sure all hydraulic line connectors are tight and all hydraulic hoses and lines are in good condition before applying pressure to the hydraulic system.

4. Keepbodyandhands away frompinholeleaksinhydrauliclines that ejecthigh pressure hydraulic fluid.Use cardboard or paper to find hydraulic leaks. Hydraulic fluid escaping under pressure can penetrate skin and cause injury. Hydraulic fluid accidentally injected into the skin must be surgically removed within a few hours by a doctor familiar with this form of injury or gangrene may result.

5. Before disconnecting any hydraulic component or performing any work on the hydraulic system, all pressureinsystem mustbe relieved.See RelievingHydraulic System Pressure in the General Information section of Chapter 3 -- Hydraulic System.

6. If hopper is to be raised, make sure that sweeper is not placed in the offset position.

7. If hopper is raised, install hopper safety support on lift cylinderto ensure that unexpectedshifting of sweeper frame does not occur.

Safety

8. Disconnect electrical power harness from tow vehicle before servicing the sweeper.

9. If major repairs areever needed or assistance isdesired, contact an Authorized Toro Distributor.

10.At the time of manufacture, the machine conformed to all applicable safety standards. To assure optimum performance and continued safety certification of the machine, use genuine Toro replacement parts and accessories. Replacement parts and accessories made by other manufacturers may result in non-conformance with the safety standards, and the warranty may be voided.

1 1.When changing tires or performing other service, use correct hoists and jacks. Make sure machine is parked on a solid level surface such as a concrete floor with the hopper empty and lowered. Have sweeper attached to towing vehicle, apply vehicle parking brake, stop engine andremove key from theignition switch. Always chock or block wheels. Use appropriate jack stands to support the raised machine. If the machine is not properly supported by appropriate jack stands, the machine may moveor fall, which may result in personal injury (see Jacking Instructions in this chapter).

Pro Sweep Page 1 -- 3 Safety

Jacking Instructions

CAUTION

When changing tires or performing other service, use correct hoists and jacks to support sweeper.Make suremachineis parked on a solid level surface such asaconcrete floor.Always chock or block wheels. Use appropriate jack standsto supportthe raisedmachine.If themachine is not properlysupported by appropriate jack stands, the machine may move or fall, which may result in personal injury.

1. Position sweeper on a level surface with dump hopper empty and lowered. Have sweeper attached totowing vehicle, apply vehicle parking brake, stop engine and remove key from the ignition switch. Chock sweeper wheels to prevent it from moving.

2. Position jack securely under the main sweeper frame (Fig. 1). Do not use the axle as a jacking point.

3. Carefully jack machine off the ground.

4. Position appropriate jack stands under the main frame to support the sweeper.

Figure 1

1. Wheel 2. Frame jacking point

Safety

Page 1 -- 4

Pro Sweep

Securing Pro Sweep to Tow Vehicle

While operating or servicing the Pro Sweep, make sure that hitch pin is properly positioned in tow vehicle hitch and sweeper tongue. Hitch pin should be secured with hairpin clip (Fig. 2).

1. Hitch pin 2. Hairpin clip

Safety and Instruction Decals

Safety

Figure 2

Numerous safety and instruction decals are affixed to the Pro Sweep. If any decal becomes illegible or damaged,install anew decal. Part numbersfor replacement decals are listed in your Parts Catalog. Order replacement decals from your Authorized Toro Distributor.

Pro Sweep Page 1 -- 5 Safety

This page is intentionally blank.

Safety

Page 1 -- 6

Pro Sweep

Product Records and Maintenance

Table of Contents

PRODUCT RECORDS 1.........................

MAINTENANCE 1...............................

EQUIVALENTS AND CONVERSIONS 2...........

Decimal and Millimeter Equivalents 2............

U.S. to Metric Conversions 2...................

TORQUE SPECIFICATIONS 3....................

Fastener Identification 3.......................

Using a Torque Wrench with an Offset Wrench 3..

Standard Torque for Dry, Zinc Plated and

Steel Fasteners (Inch Series) 4...............

Standard Torque for Dry, Zinc Plated and

Steel Fasteners (Metric Fasteners) 5...........

Other Torque Specifications 6..................

Conversion Factors 6..........................

Chapter 2

Product Records

and Maintenance

Product Records

InsertOperator’sManualandPartsCatalogforyourPro Sweep at the end of this chapter.Additionally,if any optional equipment or accessories have been installed to your machine, insert the Installation Instructions, Operator’s Manuals and Parts Catalogs for those options at the end of this chapter.

Maintenance

Maintenanceproceduresandrecommendedserviceintervals for the Pro Sweep are covered inthe Operator’s Manual.Refertothatpublicationwhenperformingregular equipment maintenance.

Pro Sweep Page 2 -- 1 Product Records and Maintenance

Equivalents and Conversions

0.09375

Product Records and Maintenance

Page 2 -- 2

Pro Sweep

Torque Specifications

Recommended fastener torque values are listed in the followingtables. For criticalapplications,as determined byToro,eithertherecommendedtorqueor a torque that is unique to theapplication is clearly identified andspecified in this Service Manual.

These Torque Specifications for the installation and tightening of fasteners shall apply to all fasteners which donot havea specific requirementidentified inthisService Manual. The following factors shall be considered when applying torque: cleanliness of the fastener, use of a thread sealant (e.g. Loctite), degree of lubrication onthe fastener,presence of aprevailing torquefeature, hardnessofthe surface underneath thefastener’shead or similar condition which affects the installation.

Fastener Identification

Asnotedinthefollowingtables,torquevaluesshouldbe reduced by 25% for lubricated fasteners to achieve the similar stress as a dry fastener.Torque values may also have to be reduced when the fastener is threaded into aluminum or brass. The specific torque value should be determined based on the aluminum or brass material strength, fastener size, length of thread engagement, etc.

The standard method of verifying torque shall be performed by marking a line on the fastener (head or nut) and mating part, then back off fastener 1/4 of a turn. Measurethetorque required totightenthefastener until the lines match up.

Product Records

and Maintenance

Grade 1 Grade 5 Grade 8

Inch Series Bolts and Screws

Figure 1

Using a Torque Wrench with an Offset Wrench

Useofan offsetwrench(e.g.crowfootwrench) willaffect torquewrench calibrationdue to theeffectivechange of torquewrenchlength. When using atorquewrenchwith an offset wrench, multiply the listed torque recommendation by the calculated torque conversion factor (Fig.

3) to determine proper tightening torque. Tightening torque when using a torque wrench with an offset wrench will be lower than the listed torque recommendation.

Example: The measured effective length of the torque wrench (distance from the center of the handle to the center of the square drive) is 18”.

Themeasuredeffectivelengthofthetorquewrenchwith the offset wrench installed (distance from the center of the handle to the center of the offset wrench) is 19”.

Class 8.8 Class 10.9

Metric Bolts and Screws

Figure 2

If the listed torque recommendation for a fastener is from 76 to 94 ft--lb, the proper torque when using this torque wrench with an offset wrench would be from 72 to 89 ft--lb.

(effective length of

torque wrench)

(effective l ength of torque

wrench + offset wrench)

TORQUE CONVERSION FACTOR = A / B

Torque wrenchOffset wrench

The calculated torque conversion factor for this torque wrenchwith this offsetwrenchwould be 18/19 = 0.947.

Pro Sweep Page 2 -- 3 Product Records and Maintenance

Figure 3

Standard Torque for Dry, Zinc Plated and Steel Fasteners (Inch Series)

Thread Size

# 6 -- 32 UNC

# 6 -- 40 UNF

# 8 -- 32 UNC

# 8 -- 36 UNF

#10--24UNC

#10--32UNF

1/4 -- 20 UNC 48 + 7 53 + 7 599 + 79 100 + 10 1130 + 113 140 + 15 1582 + 169

1/4 -- 28 UNF 53 + 7 65 + 10 734 + 113 115 + 12 1299 + 136 160 + 17 1808 + 192

5/16 -- 18 UNC 115 + 15 105 + 15 1186 + 169 200 + 25 2260 + 282 300 + 30 3390 + 339

5/16 -- 24 UNF 138 + 17 128 + 17 1446 + 192 225 + 25 2542 + 282 325 + 33 3672 + 373

3/8 -- 16 UNC 16 + 2 16 + 2 22 + 3 30 + 3 41 + 4 43 + 5 58 + 7

Grade 1, 5 &

8withThin

Height Nuts

in--lb in--lb N--cm in--lb N--cm in--lb N-- cm

10 + 2 13 + 2 147 + 23

13 + 2 25 + 5 282 + 30

18 + 2 30 + 5 339 + 56

ft--lb ft--lb N--m ft--lb N--m ft--lb N--m

SAE Grade 1 Bolts, Screws, Studs &

Sems with Regular Height Nuts

(SAE J995 Grade 2 or Stronger Nuts)

SAE Grade 5 Bolts, Screws, Studs &

Sems with Regular Height Nuts

(SAE J995 Grade 2 or Stronger Nuts)

15 + 2 169 + 23 23 + 3 262 + 34

17 + 2 192 + 23 25 + 3 282 + 34

29 + 3 328 + 34 41 + 5 463 + 56

31 + 4 350 + 45 43 + 5 486 + 56

42 + 5 475 + 56 60 + 6 678 + 68

48 + 5 542 + 56 68 + 7 768 + 79

SAE Grade 8 Bolts, Screws, Studs &

Sems with Regular Height Nuts

(SAE J995 Grade 5 or Stronger Nuts)

3/8 -- 24 UNF 17 + 2 18 + 2 24 + 3 35 + 4 47 + 5 50 + 6 68 + 8

7/16 -- 14 UNC 27 + 3 27 + 3 37 + 4 50 + 5 68 + 7 70 + 7 95 + 9

7/16 -- 20 UNF 29 + 3 29 + 3 39 + 4 55 + 6 75 + 8 77 + 8 104 + 11

1/2 -- 13 UNC 30 + 3 48 + 7 65 + 9 75 + 8 102 + 11 105 + 11 142 + 15

1/2 -- 20 UNF 32 + 4 53 + 7 72 + 9 85 + 9 115 + 12 120 + 12 163 + 16

5/8 -- 11 UNC 65 + 10 88 + 12 119 + 16 150 + 15 203 + 20 210 + 21 285 + 28

5/8 -- 18 UNF 75 + 10 95 + 15 129 + 20 170 + 18 230 + 24 240 + 24 325 + 33

3/4 -- 10 UNC 93 + 12 140 + 20 190 + 27 265 + 27 359 + 37 375 + 38 508 + 52

3/4 -- 16 UNF 115 + 15 165 + 25 224 + 34 300 + 30 407 + 41 420 + 43 569 + 58

7/8 -- 9 UNC 140 + 20 225 + 25 305 + 34 430 + 45 583 + 61 600 + 60 813 + 81

7/8 -- 14 UNF 155 + 25 260 + 30 353 + 41 475 + 48 644 + 65 667 + 66 904 + 89

NOTE: Reduce torque values listed in the table above by 25% for lubricated fasteners. Lubricated fasteners are defined as threads coated with a lubricant such as engine oil or thread sealant such as Loctite.

NOTE: The nominal torque values listed above for Grade 5and 8 fasteners are based on 75% of the minimumproof loadspecified in SAEJ429. The toleranceis approximately +

10% of the nominal torque value. Thin

height nuts include jam nuts.

NOTE: Torque values may have to be reduced when installing fasteners into threaded aluminum or brass. The specific torque value should be determined based on the fastener size, the aluminum or base material strength, length of thread engagement, etc.

Product Records and Maintenance

Page 2 -- 4

Pro Sweep

Standard Torque for Dry, Zinc Plated and Steel Fasteners (Metric Fasteners)

Class 8.8 Bolts, Screws and Studs with

Thread Size Regular Height Nuts

(Class 8 or Stronger Nuts)

Class 10.9 Bolts, Screws and Studs with

Regular Height Nuts

(Class 10 or Stronger Nuts)

M5 X 0.8 57 + 6in--lb 644 + 68 N--cm 78 + 8in--lb 881 + 90 N--cm

M6 X 1.0 96 + 10 in--lb 1085 + 113 N- -cm 133 + 14 in--lb 1503 + 158 N--cm M8 X 1.25 19 + 2ft--lb 26 + 3N--m 28 + 3ft--lb 38 + 4N--m M10 X 1.5 38 + 4ft--lb 52 + 5N--m 54 + 6ft--lb 73 + 8N--m

M12 X 1.75 66 + 7ft--lb 90 + 10 N--m 93+ 10 ft--lb 126 + 14 N--m

M16 X 2.0 166+ 17 ft--lb 225 + 23 N--m 229 + 23 ft--lb 310 + 31 N--m M20 X 2.5 325 + 33 ft--lb 440 + 45 N--m 450 + 46 ft--lb 610 + 62 N-- m

NOTE: The nominal torque values listed above are based on 75% of the minimum proof load specified in SAEJ1199.Thetoleranceis approximately + nominal torque value.

10%ofthe

Product Records

and Maintenance

Pro Sweep Page 2 -- 5 Product Records and Maintenance

Other Torque Specifications

SAE Grade 8 Steel Set Screws

Recommended Torque

Thread Size

Square Head Hex Socket

1/4 -- 20 UNC 140 + 20 in--lb 73 + 12 in--lb

5/16 -- 18 UNC 215 + 35 in--lb 145 + 20 in--lb

3/8 -- 16 UNC 35 + 10 ft--lb 18 + 3ft--lb 1/2 -- 13 UNC 75 + 15 ft--lb 50 + 10 ft--lb

Thread Cutting Screws

(Zinc Plated Steel)

Type 1, Type 23 or Type F

Thread Size Baseline Torque*

No. 6 -- 32 UNC 20 + 5in--lb

Wheel Bolts and Lug Nuts

Thread Size

7/16 -- 20 UNF

Grade 5

1/2 -- 20 UNF

Grade 5

M12 X 1.25

Class 8.8

M12 X 1.5

Class 8.8

** For steel wheels and non--lubricated fasteners.

Thread Cutting Screws

(Zinc Plated Steel)

Thread

Size

No. 6 18 20 20 + 5in--lb

Threads per Inch Type A Type B

Recommended Torque**

65 + 10 ft--lb 88 + 14 N--m

80 + 10 ft--lb 108 + 14 N--m

Baseline Torque

No. 8 -- 32 UNC 30 + 5in--lb

No. 10 -- 24 UNC 38+ 7in--lb

1/4 -- 20 UNC 85 + 15 in--lb

5/16 -- 18 UNC 110 + 20 in--lb

3/8 -- 16 UNC 200 + 100 in--lb

Conversion Factors

in--lb X 11.2985 = N--cm N--cm X 0.08851 = in--lb

ft--lb X 1.3558 = N--m N--m X 0.7376 = ft--lb

No. 8 15 18 30 + 5in--lb No. 10 12 16 38 + 7in--lb No. 12 11 14 85 + 15 in--lb

*Holesize,material strength,materialthickness&finish must be considered when determining specific torque values. All torque values are based on non--lubricated fasteners.

Product Records and Maintenance

Page 2 -- 6

Pro Sweep

Table of Contents

GENERAL INFORMATION 2.....................

Operator’s Manual 2..........................

Hydraulic Hoses 2............................

Hydraulic Hose and Tube Installation 3..........

Hydraulic Fitting Installation 4...................

Relieving Hydraulic System Pressure 6..........

Securing Pro Sweep to Tow Vehicle 6...........

HYDRAULIC SCHEMATIC 7.....................

HYDRAULIC FLOW DIAGRAMS 8................

Brush Circuit 8...............................

Sweeper Raise/Hopper Dump Circuits 10........

Sweeper Lower Circuits 12.....................

Sweeper Offset Circuits 14.....................

TROUBLESHOOTING 16........................

SERVICE AND REPAIRS 22.....................

General Precautions for Removing and Installing

Hydraulic System Components 22.............

Check Hydraulic Lines and Hoses 23............

Brush Motor 24...............................

Brush Motor Service 26........................

Hydraulic Control Manifold 28...................

Hydraulic Control Manifold Service 30...........

Lift Cylinder 32...............................

Lift Cylinder Service 34........................

Offset Cylinder 36.............................

Offset Cylinder Service 38......................

PARKER TORQLINK

SERVICE PROCEDURE

Chapter 3

Hydraulic System

System

Hydraulic

Pro Sweep Hydraulic SystemPage 3 -- 1

General Information

Operator’s Manual

The Operator’s Manual provides information regarding the operation, general maintenance and maintenance intervalsforyourProSweepmachine.Refertothatpublication for additional information when servicing the machine.

Hydraulic Hoses

Hydraulichoses aresubject to extremeconditions such aspressure differentials during operationandexposure to weather, sun, chemicals, very warm storage conditionsormishandlingduringoperationandmaintenance. These conditions can cause hose damageand deterioration. Some hoses are more susceptible to these conditions than others. Inspect all machine hydraulic hoses frequently for signs of deterioration or damage:

WARNING

Beforedisconnecting or performinganywork on hydraulic system, relieve all pressure in system (seeRelieving Hydraulic SystemPressurein this section).

Hard, cracked, cut, abraded, charred, leaking or otherwise damaged hose.

Kinked, crushed, flattened or twisted hose. Blistered, soft, degraded or loose hose cover. Cracked, damaged or badly corroded hose fittings.

When replacing a hydraulic hose, besure that the hose is straight (not twisted) before tightening the fittings. This can be done by observing the imprint (layline) on the hose. Use two wrenches when tightening a hose; hold the hose straight with one wrench and tighten the hose swivel nut onto the fitting with the second wrench (see Hydraulic Hose and Tube Installation in this section). If the hose has an elbow at one end, tighten the swivel nut on that end before tightening the nut on the straight end of the hose.

For additional hydraulic hose information, refer to Toro Service Training Book, Hydraulic Hose Servicing (Part Number 94813SL).

Keepbodyand handsawayfrompinhole leaksor nozzles that eject hydraulic fluid under high pressure. Use paper or cardboard, not hands, to search for leaks. Hydraulic fluid escaping under pressure can have sufficient force to penetrate the skin and cause serious injury. If fluid is injected into the skin, it must be surgically removed within a few hours by a doctor familiar withthistypeofinjury.Gangrenemayresultfrom such an injury.

Pro SweepHydraulic System Page 3 -- 2

Hydraulic Hose and Tube Installation (O--Ring Face Seal Fitting)

1. Makesurethreads and sealingsurfacesofthe hose/ tube and the fittingare free of burrs, nicks,scratches or any foreign material.

2. Asa preventative measureagainstleakage,itis recommended that the face seal O--ring be replaced any time the connection is opened. Make sure the O--ring is installedandproperlyseatedinthefittinggroove.Lightly lubricate the O--ring with clean hydraulic oil.

3. Place the hose/tube against the fitting body so that theflatfaceofthe hose/tubesleevefullycontactstheO-ring in the fitting.

4. Thread theswivel nut onto the fitting by hand. While holding the hose/tube with a wrench, use a torque wrench to tighten the swivel nut to the recommended installation torque shown in Figure 3. This tightening process will require the use of an offset wrench (e.g. crowfoot wrench). Use of an offset wrench will affect torque wrench calibration due to the effective length change of the torque wrench. Tightening torque when usingatorquewrenchwithanoffsetwrenchwillbelower than the listed installation torque (see Using a Torque Wrench with an Offset Wrenchin the Torque Specificationssection ofChapter 2 -- ProductRecords and Maintenance).

C. Useasecond wrench to tighten the nut to the c orrect Flats From Wrench Resistance (F.F.W.R.). The markingsonthenutandfittingbodywillverifythatthe connection has been properly tightened.

Size F.F.W.R.

4 (1/4 in. nominal hose or tubing) 1/2 to 3/4 6 (3/8 in.) 1/2to 3/4 8 (1/2 in.) 1/2to 3/4 10 (5/8 in.) 1/2 to 3/4 12 (3/4 in.) 1/3 to 1/2 16 (1 in.) 1/3 to 1/2

Swivel Nut

Tube or Hose

O--ring

Fitting Body

Figure 1

System

Hydraulic

5. If a torque wrench is not available or if space at the swivelnutpreventsuse of a torquewrench,analternate method of assembly is the Flats From Wrench Resistance (F.F.W.R.) method (Fig. 2).

Mark Nut

and Fitting

Body

Final

Position

A. Usingawrench,tightentheswivelnutontothefittinguntillightwrenchresistanceis reached(approxi-

Extend Line

mately 30 in--lb). B. Mark the swivel nut and fitting body. Hold the

hose/tube with a wrench to prevent it from turning.

AT WRENCH RESISTANCE

Figure 2

Fitting Dash Size Hose/Tube Side Thread Size Installation Torque

4 9/16 -- 18 18to22ft--lb(25to29N--m) 6 11/16 - - 16 27to33ft--lb(37to44N--m)

8 13/16 -- 16 37to47ft--lb(51to63N--m) 10 1--14 60 to 74 ft--lb (82 to 100 N--m) 12 13/16--12 85 to 105 ft--lb (116 to 142 N--m)

Initial Position

AFTER TIGHTENING

16 17/16--12 110 to 136 ft--lb (150 to 184 N--m) 20 1 11/16 -- 12 140 to 172 ft--lb (190 to 233 N--m)

Figure 3

Pro Sweep Hydraulic SystemPage 3 -- 3

Hydraulic Fitting Installation (SAE Straight Thread O--Ring Fitting into Component Port)

Non--Adjustable Fitting (Fig. 4)

1. Make sure all threads and sealing surfaces of fitting and component port are free of burrs, nicks, scratches or any foreign material.

2. Asa preventative measureagainstleakage,itis recommended that the O--ring be replaced any time the connection is opened.

3. Lightly lubricate the O--ring with clean hydraulic oil. Fittingthreadsshouldbe clean withnolubricantapplied.

IMPORTANT: Before installing fitting into port, determine port material. If fitting is to be installed into an aluminum port, installation torque is reduced.

4. Install the fitting into the port. Then, use a torque wrench and socket to tighten the fitting to the recommended installation torque shown in Figure 5.

NOTE: Useof an offsetwrench (e.g. crowfoot wrench) will affecttorque wrench calibration due to the effective length change of the torque wrench. Tightening torque when using a torque wrench with an offset wrench will be less than the recommended installation torque. See Using a Torque Wrench with an Offset Wrench in the Torque Specifications section of Chapter 2 -- Product RecordsandMaintenancetodeterminenecessaryconversion information.

5. If a torque wrench is not available, or if space at the portpreventsuseofatorquewrench, an alternate method of assembly is the Flats From Finger Tight (F.F.F.T.) method.

A. Install the fitting into the port and tighten it down full length until finger tight.

B. If port material is steel, tighten the fitting to the listed F.F.F.T.If port material is aluminum, tighten fitting to 60% of listed F.F.F.T.

Size F.F.F.T.

4 (1/4 in. nominal hose or tubing) 1.00 + 6(3/8in.) 1.50+ 8(1/2in.) 1.50+ 10 (5/8 in.) 1.50 + 12 (3/4 in.) 1.50 + 16 (1 in.) 1.50 +

Fitting

O--ring

0.25

Figure 4

Fitting

Dash Size

Fitting Port Side

Thread Size

Installation Torque Into

Steel Port

Installation Torque Into

Aluminum Port

4 7/16 -- 20 15to19ft--lb(21to25N--m) 9to11ft--lb(13to15N--m) 5 1/2 -- 20 18to22ft--lb(25to29N--m) 11to15ft--lb(15to20N--m) 6 9/16 -- 18 34to42ft--lb(47to56N--m) 20to26ft--lb(28to35N--m)

8 3/4 -- 16 58to72ft--lb(79to97N--m) 35to43ft--lb(48to58N--m) 10 7/8 -- 14 99 to 121 ft--lb (135 to 164 N--m) 60 to 74 ft--lb (82 to 100 N--m) 12 11/16--12 134 to 164 ft--lb (182 to 222 N--m) 81 to 99 ft--lb (110 to 134 N--m) 14 13/16--12 160 to 196 ft--lb (217 to 265 N--m) 96 to 118 ft--lb (131 to 160 N--m) 16 15/16--12 202 to 248 ft--lb (274 to 336 N--m) 121 to 149 ft--lb (165 to 202 N--m) 20 15/8--12 247 to 303 ft--lb (335 to 410 N--m) 149 to 183 ft--lb (202 to 248 N--m)

Figure 5

Pro SweepHydraulic System Page 3 -- 4

Adjustable Fitting (Fig. 6)

1. Make sure all threads and sealing surfaces of fitting and component port are free of burrs, nicks, scratches or any foreign material.

2. Asa preventative measureagainstleakage,itis recommended that the O--ring be replaced any time the connection is opened.

3. Lightly lubricate the O--ring with clean hydraulic oil. Fittingthreadsshouldbe clean withnolubricantapplied.

4. Turnback thelock nutas far as possible. Make sure the back up washer is notloose andis pushedup asfar as possible (Step 1 in Figure 7).

IMPORTANT: Before installing fitting into port, determine port material. If fitting is to be installed into an aluminum port, installation torque is reduced.

Lock Nut

Back--up Washer

O--ring

Figure 6

5. Install the fitting into the port and tighten finger tight until the washer contacts the face of the port (Step 2 in Figure 7). Make sure that the fitting does not bottom in the port during installation.

6. To putthefittingin the desiredposition,unscrewitby the required amount to align fitting with incoming hose or tube, but no more than one full turn (Step 3 in Figure

7).

7. Hold the fitting in the desired position with a wrench and use a torque wrench to tighten the lock nut to the recommended installation torque shown in Figure 5. This tightening process will require the use of an offset wrench (e.g. crowfoot wrench). Use of an offset wrench will affecttorque wrench calibration due to the effective length change of the torque wrench. Tightening torque when using a torque wrench with an offset wrench will be lower than the listed installation torque (see Using a Torque Wrench with an Offset Wrench in the Torque Specifications section of Chapter 2 -- Product Records and Maintenance).

8. If a torque wrench is not available, or if space at the portpreventsuseofatorquewrench, an alternate method of assembly is the Flats From Finger Tight (F.F.F.T.) method. Hold the fitting in the desired position with a wrench and,if port material is steel, tighten thelock nut witha secondwrench to thelisted F.F.F.T (Step4 inFigure7). If portmaterial is aluminum,tighten fitting to60% of listed F.F.F.T .

Step 3Step 1

Step 2 Step 4

Figure 7

System

Hydraulic

Size F.F.F.T.

4 (1/4 in. nominal hose or tubing) 1.00 + 6(3/8in.) 1.50+ 8(1/2in.) 1.50+ 10 (5/8 in.) 1.50 + 12 (3/4 in.) 1.50 + 16 (1 in.) 1.50 +

0.25

Pro Sweep Hydraulic SystemPage 3 -- 5

Relieving Hydraulic System Pressure

CAUTION

Before disconnecting any hydraulic components, operate all sweeper hydraulic controls to relieve system pressure and avoid injury from pressurized hydraulic oil.

Beforedisconnectingorperformingany work on thePro Sweep hydraulic system, all pressure in the hydraulic system must be relieved. Position sweeper on a level surfacewithdumphopperemptyandfullylowered. Turn tow vehicle key switchto OFFand allowengine tostop.

Securing Pro Sweep to Tow Vehicle

Whileservicingthe Pro Sweep, makesurethatthehitch pin is properly positioned in tow vehicle hitch and sweeper tongue (Fig. 8). Hitch pin should be secured with hairpin clip.

Make sure that the sweeper has electrical power and thatsweeper controlmodule isenergized (controlmodule Time Out and Power LED’s are both illuminated). Withthetowvehicleenginenotrunning,pressallremote transmitter buttons to energizethe solenoids on the hydraulic control manifold. After all functions have been energized,makesuretowvehiclekey switch is OFF and key is removed from ignition switch.

Figure 8

1. Hitch pin 2. Hairpin clip

Pro SweepHydraulic System Page 3 -- 6

Hydraulic Schematic

OFFSET

CYLINDER

LIFT CYLINDER

CONTROL

MANIFOLD

System

Hydraulic

Pro Sweep Hydraulic SystemPage 3 -- 7

Pro Sweep

Hydraulic Schematic

All solenoids are shown as de--energized

Hydraulic Flow Diagrams

OFFSET

CYLINDER

LIFT CYLINDER

CONTROL

MANIFOLD

(ENERGIZED)

(ROTATING)

Brush Circuit

Brush Rotating Shown

Working Pressure Return

Flow

Pro SweepHydraulic System Page 3 -- 8

Brush Circuit

NOTE: Hydraulic flow and relief pressure for the Pro

Sweep are determined by the tow vehicle. When the tow vehicle hydraulics are engaged for the

sweeper,hydraulic flowfromthe tow vehiclegoesto the sweeper control manifold (port P) throughthe hydraulic inlet hose. If the sweeper brush motor is not engaged (sweeper is raised above the transport height) and the lift and offset cylinders are stationary, hydraulic flow from the tow vehicle is directed by the control manifold pressure compensator valve EC and the de--energized solenoid valve SRV to return to the tow vehicle through control manifold port T and the return to tank hose (Fig.

9).

Brush Engage

OFFSET

CYLINDER

LIFT CYLINDER

CONTROL MANIFOLD

When the sweeper is below the transport height, solenoidvalveSRVin the hydrauliccontrolmanifoldis energized. In this sweeperposition, energized SRV shifts to preventhydraulicflowreturntothetowvehiclewhenthe towvehiclehydraulicsareengaged.Hydraulicflowfrom the tow vehicle is then directed out of control manifold port M1 to the brush motor. This flow causes rotation of the sweeper brush. Oil return from the brush motor is routed to control manifold port M2, out control manifold port T and returns to the tow vehicle.

During sweeper brush operation, solenoid valve SRV also functions as a circuit relief valve. If brush circuit pressure reaches 2500 PSI (172 bar), SRV will shift to reduce circuit pressure.

Brush Disengage

The brush can be disengaged either by shutting off hydraulicflowfromthetowvehicleorbyraisingthesweeper to the transport position.

(DE--ENERGIZED)

Figure 9

System

Hydraulic

Pro Sweep Hydraulic SystemPage 3 -- 9

OFFSET

CYLINDER

LIFT CYLINDER (EXTENDING)

CONTROL

MANIFOLD

(DE--ENERGIZED)

ENERGIZED)

(DE--

(ENERGIZED)

Sweeper Raise/Hopper Dump Circuits

Working Pressure Return Flow

Pro SweepHydraulic System Page 3 -- 10

Sweeper Raise/Hopper Dump Circuits

NOTE: Hydraulic flow and relief pressure to the Pro

Sweep are determined by the tow vehicle. When the tow vehicle hydraulics are engaged for the

10).

Sweeper Raise

OFFSET

CYLINDER

LIFT CYLINDER

CONTROL MANIFOLD

When the tow vehicle hydraulics are engaged and the remote transmitter sweeper up button is pressed and held, solenoid valve SV3 in the hydraulic control manifold is energized. The valve shift of SV3 directs oil flow past the check valve in de--energized valve SV2, out of control manifold port Cand to the lift cylinder. Hydraulic pressure against the lift cylinder piston extends the cylinder to raise the hopper. The check valve fitting attached to the lift cylinder allows oil flow to bypass the orifice in the fitting for proper lift cylinder extension.

As the hopper is being raised, control manifold relief valveRVfunctionsasacircuitrelief valve. If circuit pressure reaches 2000 PSI (138 bar) while the sweeper is being raised, RV will shift to reduce circuit pressure.

When the transmitter sweeper up button is released or whenthesweepergets to transport(sweepernotoffset) orturn around (sweeperisoffset)height, solenoidvalve SV3inthehydraulic manifold isde--energized, stopping the raise function. The check valve in de--energized valve SV2 prevents oil flow from the lift cylinder so the sweeper remains in the raised position.

Hopper Dump

(DE--ENERGIZED)

Figure 10

System

Hydraulic

Ifthesweeper is inthetransportheightposition (sweeper not offset), the remote transmitter dump sequence is entered and then the hopper dump button is pressed andheld,thesweeperhopperwillfullyraisetoemptythe hopper. Control manifold solenoid valve SV3 is energized to allow oil flow to the lift cylinder. De--energized valveSV2andreliefvalveRVfunction thesametodump the hopper as during the sweeper raise function.

Pro Sweep Hydraulic SystemPage 3 -- 11

OFFSET

CYLINDER

LIFT CYLINDER (RETRACTING)

CONTROL

MANIFOLD

(ENERGIZED)

ENERGIZED)

(DE--

(DE-ENERGIZED)

Sweeper Lower Circuits

Working Pressure Return

Flow

Pro SweepHydraulic System Page 3 -- 12

Sweeper Lower Circuits

NOTE: Hydraulic flow and relief pressure to the Pro

Sweep are determined by the tow vehicle. When the tow vehicle hydraulics are engaged for the

11).

Sweeper Lower

OFFSET

CYLINDER

LIFT CYLINDER

CONTROL MANIFOLD

When the remote transmitter sweeper down button is pressed, solenoid valve SV2 in the hydraulic control manifold is energized. The valve shift of SV2 allows a path for oil flow from the lift cylinder. The weight of the dump hopper and sweeper frame cause the lift cylinder to retract, allowing the sweeper to lower to the ground. The orificein the lift cylinder check valve fitting restricts oilflow fromthe cylinderto controllift cylinder retraction speed.

While lowering, if the remote transmitter sweeper up or stopbutton are pressed,solenoidvalve SV2 willde--energize and oil flow from the lift cylinder will cease. The sweeper will stop lowering and remain in position.

As the sweeper is being lowered, relief valve RV functions as a circuit relief valve. If circuit pressure reaches 2000 PSI (138 bar), RV will shift to reduce circuit pressure.

Sweeper Float

After the sweeper has been fully lowered to the ground, solenoid valve SV2 will continue to be energized. The shifted valve will allow lift cylinder and sweeper movement so the sweeper head can follow ground surface contours.

(DE--ENERGIZED)

Figure 11

System

Hydraulic

Pro Sweep Hydraulic SystemPage 3 -- 13

OFFSET

CYLINDER

(EXTENDING)

LIFT CYLINDER

CONTROL

MANIFOLD

(SHIFTED)

(LOWER COIL

ENERGIZED

FORRHOFFSET)

Sweeper Offset Circuits

(Offset to Right Shown)

Working Pressure Return Flow

Pro SweepHydraulic System Page 3 -- 14

+ 73 hidden pages

Toro 7066 User Manual

Preface

Table Of Contents

Safety Instructions

Before Op erating

While Operating

Maintenance and Service

Jacking Instructions

Securing Pro Sweep to Tow Vehicle

Safety and Instruction Decals

Product Records

Maintenance

Equivalents and Conversions

Torque Specifications

Fastener Identification

Using a Torque Wrench with an Offset Wrench

Standard Torque for Dry, Zinc Plated and Steel Fasteners (Inch Series)

Standard Torque for Dry, Zinc Plated and Steel Fasteners (Metric Fasteners)

Other Torque Specifications

Conversion Factors

General Information

Operator’s Manual

Hydraulic Hoses

Relieving Hydraulic System Pressure

Securing Pro Sweep to Tow Vehicle

Hydraulic Schematic

Hydraulic Flow Diagrams

Brush Circuit

Sweeper Raise/Hopper Dump Circuits

Sweeper Lower Circuits

Sweeper Offset Circuits