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New Holland Workmaster 75, Service Manual, Page: 7 / 41

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New Holland Workmaster 75 Service Manual Download Page 7

INTRODUCTION

Foreword

This repair manual provides the technical information needed to properly service the New Holland WORKMASTER
75 model tractor. Use this manual in conjunction with the operator’s manual for complete operation, adjustment, and
maintenance information

On New Holland equipment, left and right are determined by standing behind the unit, looking in the direction of travel.

84269855 20/04/2010

3

Find manuals at https://best-manuals.com

Summary of Contents for Workmaster 75

Page 1: ...SERVICE MANUAL Workmaster 75 84269855 20 04 2010 ...

Page 2: ...AKE SYSTEM B 30 A ENGINE COOLANT SYSTEM B 50 A LUBRICATION SYSTEM B 60 A STARTING SYSTEM B 80 A TRANSMISSION DRIVE AND PTO OUT C POWER COUPLING Clutch C 10 C TRANSMISSION Mechanical C 20 B REAR PTO Mechanical C 40 B AXLES BRAKES AND STEERING D FRONT AXLE D 10 A REAR AXLE D 12 A 2WD 4WD SYSTEM Mechanical D 14 B Final drive D 15 A STEERING Hydraulic D 20 C SERVICE BRAKE Mechanical D 30 B PARKING BRA...

Page 3: ...SAFETY SECURITY ACCESSORIES Safety E 50 B 84269855 20 04 2010 Find manuals at https best manuals com ...

Page 4: ...84269855 20 04 2010 Find manuals at https best manuals com ...

Page 5: ...INTRODUCTION 84269855 20 04 2010 1 Find manuals at https best manuals com ...

Page 6: ...e 5 International symbol 6 Safety rules 7 Basic instructions Hardware 11 Torque Specification Tables 12 General specification Biodiesel Fuels 17 General specification 18 Consumables 20 Dimension 21 Product identification 24 84269855 20 04 2010 2 Find manuals at https best manuals com ...

Page 7: ...KMASTER 75 model tractor Use this manual in conjunction with the operator s manual for complete operation adjustment and maintenance information On New Holland equipment left and right are determined by standing behind the unit looking in the direction of travel 84269855 20 04 2010 3 Find manuals at https best manuals com ...

Page 8: ...s which may be harmful to your health Modern oils contain additives Do not burn contaminated fuels and or waste oils in ordinary heating systems Avoid spillage when draining off used engine coolant mixtures engine gearbox and hydraulic oils brake fluids etc Do not mix drained brake fluids or fuels with lubricants Store them safely until they can be disposed of in a proper way to comply with local ...

Page 9: ...INTRODUCTION Legal advice BT09A213 1 84269855 20 04 2010 5 Find manuals at https best manuals com ...

Page 10: ...und speed Hitch raise rear Engine oil pressure Rear wind screen wash wipe Differential lock Hitch lower rear Engine coolant temperature Heater temp erature control Rear axle oil tem perature Hitch height limit rear Coolant level Heater fan Transmission oil pressure Hitch height limit front Tractor lights Air conditioner FWD engaged Hitch dis abled Headlamp main beam Air filter blocked FWD dis enga...

Page 11: ...e Safety The precautionary statement IMPORTANT is followed by specific instructions This statement is intended for ma chine safety NOTICE The word IMPORTANT is used to inform the reader of something they need to know to prevent minor machine damage if a certain procedure is not followed Information NOTE Instructions used to identify and present supplementary information LEGAL OBLIGATIONS This mach...

Page 12: ...ning a tractor without a roll bar can result in death or injury If your tractor is not equipped with a roll bar and seat belt see your NEW HOLLAND Dealer 3 Always use the seat belt The only instance when the seat belt should not be used is if the roll bar has been removed from the tractor or folding ROPS is in down position 4 If a front end loader is to be installed always use a FOPS Falling Objec...

Page 13: ...d OPERATING THE TRACTOR 1 Before starting the tractor apply the parking brake place the PTO lever in the OFF position the lift control lever in the down position the remote control valve levers in the neutral position and the transmission in neutral 2 Always sit in the tractor seat when starting the engine or operating controls Do not start the engine or operate controls while standing beside the ...

Page 14: ...fuels be added to diesel fuel These combi nations can create an increased fire or explosive hazard Such blends are more explosive than pure gasoline in a closed container such as a fuel tank DO NOT USE THESE BLENDS 2 Never remove the fuel cap or refuel with the engine running or hot 3 Do not smoke while refueling or when standing near fuel 4 Maintain control of the fuel filler pipe nozzle when fil...

Page 15: ...t instead of tensioning stretching it The tension on the bolt is what holds the joint together Approximately 90 of the torque applied during assembly goes to overcoming friction between the parts The other 10 is used to tension stretch the bolt After assembly the frictional forces disappear which is the basis for the saying If it does not fail during assembly it will not fail in service The bolt m...

Page 16: ...54 87 64 113 83 123 91 159 117 76 56 108 80 9 16 81 60 104 77 125 92 163 120 176 130 229 169 111 82 156 115 5 8 112 83 145 107 174 128 224 165 244 180 316 233 153 113 215 159 3 4 198 146 256 189 306 226 397 293 432 319 560 413 271 200 383 282 7 8 193 142 248 183 495 365 641 473 698 515 904 667 437 323 617 455 1 289 213 373 275 742 547 960 708 1048 773 1356 1000 654 483 924 681 NOTE Torque values s...

Page 17: ...ue Torque measured in the direction of tightening the moment before the bolt nut starts to turn 2 Clamping Force Force equal to the tension in the fastener that clamps the parts together 3 Stabilized Torque Torque measured on a joint that has had a settling time after fastener installation and the torque is measured in the direction of tightening the moment after the bolt nut begins to turn 4 Proo...

Page 18: ...T use these torque values when values are given in a specified procedure NOTE Reuse of fasteners Fasteners that have been tightened above yield point during assembly should not be reused after disassembly They have been permanently deformed and the elastic range has been shifted closer to the ultimate tensile point NOTE Torque and Turn is a recommended procedure for manufacturing and service when ...

Page 19: ... to all fittings including stainless steel unless as otherwise stated Generally Loctite 567 can be used for all fittings including stainless steel Loctite 565 is used for most metal fittings For high filtration zero contamination systems use Loctite 545 NPT PIPE FITTING TORQUE CHART Thread Size Torque Maximum 1 8 27 13 Nm 10 lb ft 1 4 18 16 Nm 12 lb ft 3 8 18 22 Nm 16 lb ft 1 2 14 41 Nm 30 lb ft 3...

Page 20: ...338 230 to 250 37 DEGREE FITTINGS TUBE NUTS FOR 37 DEGREE FLARED FITTINGS O RING BOSS PLUGS ADJUSTABLE FITTING LOCKNUTS SWIVEL JIC 37 SEATS TORQUE TORQUE Size Tubing OD Thread Size Newton Meters Foot Pounds Newton Meters Foot Pounds mm in Min Max Min Max Min Max Min Max 4 6 4 1 4 7 16 20 12 16 9 12 8 14 6 10 5 7 9 5 16 1 2 20 16 20 12 15 14 20 10 15 6 9 5 3 8 9 16 18 29 33 21 24 20 27 15 20 8 12 7...

Page 21: ... may be necessary to change the engine oil engine oil filter and fuel filter elements more frequently than with Diesel Fuels Biodiesel Fuel can remove rust and particles from the inside of on site fuel storage tanks that would normally adhere to the sides of the tank Like particle deposits that commonly occur with Diesel Fuel these particles can become trapped by the machine fuel filters causing b...

Page 22: ... Exhaust cold 0 45 mm 0 018 in 0 45 mm 0 018 in Crankcase Oil Capacity 8 0 l 8 5 US qt COOLING SYSTEM Type Pressurized Liquid with Recirculating Bypass Fan Diameter 410 mm 16 1 in Number of Fan Blades 6 Thermostat Start to Open 78 C 172 F Fully Open 94 C 201 F Radiator Cap 90 kPa 13 psi Antifreeze Ethylene Glycol System Capacity 13 7 l 14 5 US qt ELECTRICAL SYSTEM Alternator 14 V 65 A Battery Type...

Page 23: ...ber of Splines 6 PTO Shaft Rotation Clockwise Viewed from rear Engine Speed for 540 rpm rear PTO Operation 2576 RPM PTO Horsepower 29 kW 39 Hp Three Point Linkage Category Type II Lift capacity at ball ends 1486 kg 3276 lb Lift capacity 610 mm behind ball ends 1102 kg 2430 lb Clutch System Type Double Disc Dry Transmission Clutch Disc Diameter 280 mm 11 in PTO Clutch Disc Diameter 280 mm 11 in Ped...

Page 24: ... 6 0 US qt Front Axle Differential Oil NEW HOLLAND AMBRA MULTI G 134 NH 410B API GL4 ISO 32 46 5 5 l 5 8 US qt Front Axle Hub Oil NEW HOLLAND AMBRA MULTI G 134 NH 410B API GL4 ISO 32 46 1 2 l 1 3 US qt Grease Fittings Bearings AMBRA GR9 NH 710A NLGI 2 As required Steering Oil Hydraulic NEW HOLLAND AMBRA MULTI G 134 NH 410B API GL4 ISO 32 46 2 0 l 2 1 US qt Engine Radiator Coolant System Capacity 1...

Page 25: ...CTION Dimension 56061233A 1 NOTE The following dimensions are based on standard tractors fitted with tire sizes as shown Allowance must be given for tires of larger or smaller dimensions 84269855 20 04 2010 21 ...

Page 26: ...7 0 in H Overall Length 3483 mm 137 in 3483 mm 137 in Minimum radius of turning circle Std front track without brakes 3643 mm 143 in 5100 mm 201 in NOTE If your tractor has tires of a different size then the above dimensions will vary due to the difference in the rolling radius and section width of the tires fitted Tractor Total Weight Model WORKMASTER 75 2WD WORKMASTER 75 FWD On front axle 886 kg...

Page 27: ...ble such as the use of SAE 5W30 in extreme low temperatures or SAE50 in extreme high temperatures Sulfur in Fuel The engine oil change period is shown in Section 3 How ever locally available fuel may have a high sulphur con tent in which case the engine oil change period should be adjusted as follows Sulfur Content Below 0 5 Normal 0 5 1 0 Half the normal above 1 0 One quarter normal NOTICE The us...

Page 28: ...code and engine serial number followed by transmission serial number Record the information in Figure 1 for quick reference 20103294 1 Tractor Identification Location Stamped The tractor serial number unit code and engine number are stamped on the left side of the transmission housing These numbers are also repeated on the vehicle identifi cation decal reproduced above 76100840 2 84269855 20 04 20...

Page 29: ...SERVICE MANUAL HYDRAULIC PNEUMATIC ELECTRICAL ELECTRONIC SYSTEMS Workmaster 75 84269855 20 04 2010 A ...

Page 30: ...ULIC POWER SYSTEM A 10 A Workmaster 75 PRIMARY HYDRAULIC POWER SYSTEM Open center mechanical remote valve A 10 D Workmaster 75 HYDRAULIC COMMAND SYSTEM A 14 A Workmaster 75 ELECTRICAL POWER SYSTEM A 30 A Workmaster 75 LIGHTING SYSTEM A 40 A Workmaster 75 84269855 20 04 2010 A ...

Page 31: ...HYDRAULIC PNEUMATIC ELECTRICAL ELECTRONIC SYSTEMS A PRIMARY HYDRAULIC POWER SYSTEM 10 A Workmaster 75 84269855 20 04 2010 A 10 A 1 ...

Page 32: ...ponent identification Introduction and circuit identification 9 Static description 10 Hydraulic schema Open center hydraulic circuit and mechanical lift 11 Sectional view Hydraulic lift 13 Dynamic description 16 Hydraulic pump Static description 20 Control valve Dynamic description Operation Of Distributor 21 Component identification Distributor 24 SERVICE PRIMARY HYDRAULIC POWER SYSTEM Remove 25 ...

Page 33: ... Hydraulic pump Remove 49 Disassemble 50 Inspect 52 Assemble 54 Install 56 Test 58 Control valve Remove 60 Disassemble 62 Inspect 65 Assemble 66 Install 69 DIAGNOSTIC PRIMARY HYDRAULIC POWER SYSTEM Troubleshooting 70 84269855 20 04 2010 A 10 A 3 ...

Page 34: ...ft arms in position 0 200 1 400 mm 0 0079 0 0551 in Draft Control if applicable Draft Control Shaft OD 21 967 22 000 mm 0 865 0 866 in Shaft housing bore diameter on draft control shaft 22 020 22 072 mm 0 867 0 869 in Shaft clearance in body 0 020 0 105 mm 0 00079 0 00413 in Position control shaft diameter 13 973 14 000 mm 0 550 0 551 in Shaft housing diameter on Draft control shaft 14 016 14 059 ...

Page 35: ... capacity with Lower links Horizontal 1525 kg 3362 lb PRIMARY HYDRAULIC POWER SYSTEM Torque Description Thread Size Torque Lift to Rear Transmission Housing Bolts M14 x 1 50 132 N m 97 lb ft Control Valve body to Lift Bolts M8 x 1 25 19 N m 14 lb ft Lift Arm Bolts M14 x 1 5 132 N m 97 lb ft Position Control Shaft s Nut M10 x 1 25 56 N m 41 lb ft Lever Bracket Nuts M8 x 1 25 19 N m 14 lb ft Interna...

Page 36: ...Sealant Specification Lift Housing to Rear Axle Housing S1 LOCTITE 515 Front Cover to Lift Housing S2 LOCTITE 515 Distributor Assembly to Front cover S3 LOCTITE 515 PRIMARY HYDRAULIC POWER SYSTEM Special tools Tool Description Tool Number HPL Position Adjustment Tool 380002741 HPL Lift Arm Travel Adjustment Wrench 380000267 84269855 20 04 2010 A 10 A 6 ...

Page 37: ...ditioned 19 l min 5 02 US gpm Used 13 3 l min 3 51 US gpm Test Oil Temperature 55 65 C 131 149 F Test Oil Grade SAE 20W 30 API GL4 Pump Gear Journal Diameter 17 4 17 418 mm 0 6850 0 6857 in Journal Housing Bore Diameter in Bearing 17 45 17 470 mm 0 6870 0 6878 in Journal Clearance in Bearing 0 032 0 070 mm 0 00126 0 00276 in Max Wear Clearance 0 1 mm 0 0039 in Gear in Pump Body 0 020 0 064 mm 0 00...

Page 38: ...ue Nut pump drive gear C1 7 16 20 47 5 N m 35 0 lb ft Nut pump mounting on timing case C2 M6 x 1 8 N m 5 9 lb ft Bolt pump cover C3 M10 x 1 25 58 N m 42 8 lb ft Bolt delivery pipe to pump C4 M6 x 1 10 N m 7 4 lb ft Hydraulic pump Special tools Tool Description Tool No Adapter hydraulic pressure checking 380002742 84269855 20 04 2010 A 10 A 8 ...

Page 39: ...e priority of operation is given to the order of compo nents in the circuit that is remote valves and hydraulic lift This means for example when fully operating a re mote valve the lift will not operate at the same time The open center high pressure hydraulic circuit with me chanically controlled hydraulic lift is shown in PRIMARY HYDRAULIC POWER SYSTEM Hydraulic schema A 10 A and includes the com...

Page 40: ...ntrol lever 1 Draft control lever 2 optional 20098414 1 Distributor 3 Response control valve 4 Sensitivity control valve 5 20098415 2 Draft sensing unit 6 optional Lift arms 7 and internal linkages and cylinder as sembly Internal mechanical linkages relief valves hydraulic cylinder assembly are mounted inside the hydraulic lift housing which must be removed to obtain access 20098416 3 84269855 20 ...

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