New Holland TN55 Operating instructions

87034098 5/03
2003 NEW HOLLAND NORTH AMERICA, INC.
Printed In U.S.A.
TN55, TN65, TN70, TN75
REPAIR MANUAL
COMPLETE CONTENTS
SECTION 00 - GENERAL 2............................................
SECTION 10 - ENGINE 2..............................................
SECTION 18 - CLUTCH 3..............................................
SECTION 21 - TRANSMISSIONS 3.....................................
SECTION 23 - DRIVE LINES 5..........................................
SECTION 25 - FRONT AXLE MECHANICAL TRANSMISSION 6...........
SECTION 27 - REAR MECHANICAL TRANSMISSION 6...................
SECTION 31 - MECHANICAL POWER TAKE-OFF 7......................
SECTION 33 - BRAKING SYSTEM 8....................................
SECTION 35 - HYDRAULIC SYSTEM 8..................................
SECTION 41 - STEERING 10............................................
SECTION 44 - AXLES AND WHEELS 11.................................
SECTION 55 - ELECTRICAL SYSTEM 11.................................
SECTION 90 - PLATFORM, CAB, BODYWORK 15........................
The following pages are the collation of the contents pages from each section and
chapter of the TN55, TN65, TN70, TN75 Repair manual. Complete Repair part #
87034092.
The sections used through out all New Holland product Repair manuals may not be
used for each product. Each Repair manual will be made up of one or several books.
Each book will be labeled as to which sections are in the overall Repair manual and
which sections are in each book. The sections listed above are the sections utilized for
the TN55, TN65, TN70, TN75 Tractors.

2
SECTION 00 - GENERAL
BOOK 1 - 87034093
Chapter 1 -- General Instructions
CONTENTS
Section Description Page
10 000 General Instructions 1............................................................
SECTION 10 -- ENGINE
BOOK 1 - 87034093
Chapter 1 -- Engine
CONTENTS
Section Description Page
10 000 General specifications 2..........................................................
Data 5..........................................................................
Torque settings 22..............................................................
Tools 23.......................................................................
Cross--sectional views 25........................................................
Lubrication and cooling system diagrams 27........................................
Troubleshooting 29..............................................................
10 001 10 Engine, Removal--Installation 33..................................................
10 001 30 Compression test 35............................................................
10 001 54 Engine, Removal--Assembly 36...................................................
10 414 10 Coolant Pump and Alternator Drive Belt -- Tension adjustment 72......................
10 101 53 Valve guides, Replacement 73....................................................
10 101 60 Injector holder casing, Replacement 76............................................
10 102 70 Front engine oil seal, Removal--Installation 78.......................................
10 106 12 Valve clearance adjustment 80....................................................
10 126 10 Fuel tank, Removal--Installation 82................................................
10 218 30 Engine injectors, Removal--Installation 84..........................................
10 246 14 Bosch injection pump, Removal--Installation, timing and air bleed check 86..............
10 254 44 Exhaust pipe, Removal--Installation 92.............................................
10 402 11 Coolant pump, Removal--Installation, with radiator removed 93........................
10 402 28 Coolant pump, Overhaul 94......................................................
10 402 30 Thermostat, Removal--Installation 95..............................................
10 406 10 Radiator, Removal--Installation 97.................................................
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3
SECTION 18 -- CLUTCH
BOOK 1 - 87034093
Chapter 1 -- Clutch
CONTENTS
Section Description Page
18 000 General specifications 1..........................................................
Torque settings 2................................................................
Tools 2.........................................................................
Cross--sectional views 3..........................................................
Troubleshooting 5................................................................
18 110 10 Clutch -- Removal--Installation 6....................................................
18 110 30 11”/11” Dual disk clutch -- Test bench overhaul 11....................................
18 110 30 11” Single disk clutch (Version with Power--Shuttle) -- Test bench overhaul 15...........
18 100 40 Clutch adjustments 19...........................................................
SECTION 21 -- TRANSMISSIONS
BOOK 2 - 87034094
Chapter 1 -- Mechanical Transmission (8 x 8),
(16+16)Synchro-Command,and8x8Non-SynchronizedTransmissions
CONTENTS
Section Description Page
21 000 Main data 1.....................................................................
Torque settings 2................................................................
Special Tools 4..................................................................
Cross-sectional views 8...........................................................
Description and operation 14.....................................................
Troubleshooting 14..............................................................
21 118 10 Rear Transmission/Gearbox, Removal--Installation
21 118 12 16............................................................................
21 118 85 Rear Transmission/Gearbox, Disassembly--Assembly 23.............................
Rear Transmission/Gearbox, driving and driven shafts clearance adjustments 31........
21 130 10 Gearbox Control Lever, Removal--Installation 33....................................
21 130 11 Range Gear Control Lever, Removal--Installation 34.................................
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4
SECTION 21 -- TRANSMISSIONS
BOOK 2 - 87034094
Chapter 2 -- Power Shuttle Transmission (8 + 8 and 16 + 16 versions)
CONTENTS
Section Description Page
21 000 Main data 2.....................................................................
Torque values 4.................................................................
Special tools 5...................................................................
Cross-sectional views 10.........................................................
Description and operation 15.....................................................
21 118 85 Transmission--Gearbox, Disassembly--Assembly 16.................................
21 134 46 Power shuttle control valve, Disassembly--Assembly 18..............................
21 134 70 A + B Clutch valve solenoids, Removal--Installation 21...............................
21 134 70 Dump valve solenoid, Removal--Installation 22......................................
21 154 34
21 154 60 Clutch casing, Disassembly--Assembly 23..........................................
Description of systems (ECM and CDU) 28.........................................
Automatic self-diagnosis (ECM) 29................................................
ECM First start up 30............................................................
Diagnosis during operation 31....................................................
Calibration and diagnostic unit (CDU) 32...........................................
Power shuttle fault code priority 33................................................
Fault codes indication 36.........................................................
Calibration and diagnostics unit use 37.............................................
HH menu access 38.............................................................
H1 -- Clutches A and B calibration error codes 40....................................
H2 -- Clutches A and B calibration values display 45.................................
H3 -- System configuration 46.....................................................
H4 -- Power shuttle hardware and software revision levels 48.........................
H5 -- Control switch diagnosis 49..................................................
H6 -- Clutch A fill time 54.........................................................
H7 -- Clutch B fill time 56.........................................................
H8 -- Erasure of data stored in NVM 58............................................
H9 -- Voltmeter functions 59......................................................
HA -- Clutch pedal potentiometer and status switch 63................................
Clutch pedal potentiometer replacement 65.........................................
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5
SECTION 21 -- TRANSMISSIONS
BOOK 2 - 87034094
Chapter 2 -- Power Shuttle Transmission (8 + 8 and 16 + 16 versions)
(Continued)
CONTENTS
Section Description Page
HC -- Transmission oil temperature sender 66.......................................
HD -- Hi/Lo Synchronizer operation (not used in standard) 67.........................
HE -- Gear change adjustments 69................................................
HF -- Stored error codes 70.......................................................
Troubleshooting fault codes 72....................................................
Power Shuttle (8 x 8 and 16 x 16) electronic control unit input/output wiring diagram 276..
SECTION 23 -- DRIVE LINES
BOOK 3 - 87034095
Chapter 1 -- Drive Lines
CONTENTS
Section Description Page
23 000 Main data 1.....................................................................
Torque settings 2................................................................
Cross--sectional views 3..........................................................
Description, operation and hydraulic diagrams 7......................................
Troubleshooting 7................................................................
23 101 26 Transmission shafts and guard, Disassembly -- Assembly 8............................
23 101 40 Drive gear housing assembly, Removal -- Installation 9................................
23 202 50 Drive gear housing assembly, Removal -- Installation 9................................
23 101 42 Drive gear housing assembly removed, Disassembly -- Assembly 11....................
23 202 52 Drive gear housing assembly removed, Disassembly -- Assembly 13...................
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6
SECTION 25 -- FRONT AXLE MECHANICAL TRANSMISSION
BOOK 3 - 87034095
Chapter 1 -- Front Axle Mechanical Transmission
CONTENTS
Section Description Page
25 000 Main Data 1.....................................................................
Torque Settings 4................................................................
Tools 7.........................................................................
Cross--sectional Views 10........................................................
Description and Operation 11......................................................
25 100 30 Front Axle, Removal--Installation 12...............................................
25 108 30 Front Epicyclic Final Drive, Disassembly--Assembly 16...............................
25 108 46 Steering Knuckle Bearing Pins, Replacement 22....................................
25 100 38 Wheel Hubs and Steering Knuckle Pins and Bearings, Removal--Replacement--Installation 22
25 100 38 Bevel Drive and Front Axle Differential Axle Housing, Disassembly--Assembly 25........
25 102 20 Front Axle Bevel Drive, Overhaul 30...............................................
Bevel Drive Adjustments 33......................................................
25 102 24 Front Axle Differential, Overhaul 40................................................
25 102 27 Front Axle Differential with LIM--Slip Unit, Overhaul 41...............................
44 511 80 Leading Drive Wheels Toe-in Check 43............................................
SECTION 27 -- REAR MECHANICAL TRANSMISSION
BOOK 3 - 87034095
Chapter 1 -- Rear Mechanical Wheel Drive
CONTENTS
Section Description Page
27 000 Main data 1.....................................................................
Torque settings 3................................................................
Tools 5.........................................................................
Cross-sectional views 9...........................................................
Description and operation 11......................................................
Troubleshooting 11...............................................................
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7
SECTION 27 -- REAR MECHANICAL TRANSMISSION
BOOK 3 - 87034095
Chapter 1 -- Rear Mechanical Wheel Drive (Continued)
CONTENTS
Section Description Page
27 106 16 Rear Transmission/Gearbox, Removal--Installation 12................................
27 110 10 Differential Lock Engagement Sleeve, Adjusting 18..................................
27 120 10 Final Drive Housing Assembly, Removal--Installation
27 120 20 25............................................................................
27 120 34 Drive Wheel Shaft, Removal--Installation 27........................................
27 120 32 Epicyclic Final Drive, Removal--Installation 29.......................................
SECTION 31 -- MECHANICAL POWER TAKE--OFF
BOOK 3 - 87034095
Chapter 1 -- Mechanical Power Take--Off
CONTENTS
Section Description Page
31 000 Main data 1.....................................................................
Tools 3.........................................................................
Tightening torque 4..............................................................
Cross-sectional views 4...........................................................
Description and operation 6.......................................................
Troubleshooting 7................................................................
31 112 20 Mechanical power take-off, Removal--Installation 8...................................
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8
SECTION 33 -- BRAKING SYSTEM
BOOK 3 - 87034095
Chapter 1 -- Braking System
CONTENTS
Section Description Page
33 000 Main data 1.....................................................................
Torque settings 2................................................................
Cross-sectional views 3...........................................................
Tools 4.........................................................................
Description and operation 5.......................................................
Troubleshooting 6................................................................
33 202 60 Right or left--hand brake, Removal--Installation 8.....................................
33 202 46 Braking system hydraulic pump, Removal--Installation 10.............................
33 202 04 Brake hydraulic system -- Air Bleeding 15..........................................
33 110 40 Parking brake, Brake disks Removal--Installation
33 110 44 17............................................................................
33 110 08 Handbrake control, Travel adjustment 18...........................................
SECTION 35 -- HYDRAULIC SYSTEM
BOOK 4 - 87034096
Chapter 1 -- Rear Mechanical Hydraulic Lift
CONTENTS
Operation Description Page
35 000 Main data 1.....................................................................
Torque settings 3................................................................
Tools 5.........................................................................
Cross-sectional views 7...........................................................
Description and operation 12.....................................................
Troubleshooting 16..............................................................
35 110 40 Lift internal controls, Disassembly--Assembly 18.....................................
Lift adjustments 22..............................................................
35 110 08 Tie-rod adjustments 28..........................................................
Various adjustments 30..........................................................
35 110 42 Lift cylinder and arms shaft, Disassembly--Assembly 32..............................
35 114 14 Lift control valve (with control valve removed), Disassembly--Assembly 36..............
35 114 30 Lift pressure relief valve, Removal--Installation 40...................................
35 114 32 Lift pressure relief valve (Setting) 40...............................................
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9
SECTION 35 -- HYDRAULIC SYSTEM
BOOK 4 - 87034096
Chapter 2 -- Open Centre System Auxiliary Control Valves
CONTENTS
Operation Description Page
35 000 Main data -- Tools -- Torque settings 2...............................................
Cross-sectional views 3...........................................................
Description and operation 5.......................................................
Troubleshooting see Lift -- Chapter 1..............................................
35 204 46 Auxiliary control valves, Disassembly--Assembly (with the unit removed) 9...............
SECTION 35 -- HYDRAULIC SYSTEM
BOOK 4 - 87034096
Chapter 3 -- Trailer Brake Auxiliary Control Valve
CONTENTS
Operation Description Page
35 000 Description and operation 1.......................................................
Cross-sectional view 1............................................................
Troubleshooting 8................................................................
33 220 40 Trailer brake valve, Removal--Installation 11.........................................
SECTION 35 -- HYDRAULIC SYSTEM
BOOK 4 - 87034096
Chapter 4 -- Non--Stop Flow Gear Pump
CONTENTS
Operation Description Page
35 000 Main data 1.....................................................................
Torque settings -- Description and operation 2........................................
Troubleshooting see Lift -- Chapter 1...............................................
35 104 30 Lift circuit hydraulic pump, Disassembly--Assembly (with unit removed) 4................
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10
SECTION 41 -- STEERING
BOOK 4 - 87034096
Chapter 1 -- Steering
CONTENTS
Operation Description Page
41 000 Torque settings main data -- tools 2.................................................
Operation 3.....................................................................
Components 6...................................................................
Troubleshooting 7................................................................
41 204 10 Hydrostatic steering wheel, Replacement 9.......................................
41 204 30 Hydrostatic steering control valve, Removal -- Installation 10.......................
41 204 34 Hydrostatic steering control valve, (removed) Disassembly -- Assembly 15...........
41 204 38 Hydrostatic steering control valve -- Bench testing 30..............................
SECTION 41 -- STEERING
BOOK 4 - 87034096
Chapter 2 -- Non--Stop Flow Gear Pump
CONTENTS
Operation Description Page
41 000 Main data 1.....................................................................
Torque settings -- Description and operation 2........................................
Troubleshooting see Lift -- Chapter 1 Section 35......................................
41 206 20 Power steering oil pump Disassembly -- Assembly (with unit removed) 3................
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