Complete workshop repair service manual with electrical wiring diagrams for New Holland TL70A, TL80A, TL 90A, TL100A Tractors. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.

New Holland TL70A, TL80A, TL 90A, TL100A Tractors service & repair manual (including maintenance, overhaul, disassembling & assembling, adjustment, tune-up, operation, inspecting, diagnostic & troubleshooting…) is divided into different sections. Each section covers a specific component or system with detailed illustrations. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. The printer-ready PDF documents work like a charm on all kinds of devices.

1,621 + 2,080 pages, bookmarked, Searchable, Printable, high quality PDF

FILE LIST:
603.54.491.00 - New Holland Tractors TL70A, TL80A, TL 90A, TL100A Service Manual.pdf; 1,621 pages, searchable, printable, bookmarked, high quality PDF w/ TOC.
603.54.511.00 - New Holland Tractors TL70A, TL80A, TL 90A, TL100A Service Manual.pdf; 2,080 pages, searchable, printable, bookmarked, high quality PDF w/ TOC.

EXCERPT:
SECTION 33 − BRAKING SYSTEM − CHAPTER 1
DESCRIPTION AND OPERATION
SERVICE BRAKES (see fig. 4)
The service brakes are the hydraulically operated wet disk type.
The two control pumps (one for each pedal) are located in the front part of the cab and are connected to their pedals (3) by means of tie−rods.
The pumps can be operated on their own by each pedal, or as a pair with both pedals (connected by a pin).
The connecting pipe (6) between the two pumps ensures balanced braking, even when the brake disks are not equally worn.
The control pumps are fed from a single reservoir installed on the pumps.
The brake disks (one for each rear wheel) are located between the rear transmission casing and the final drive casing. The disks are mounted on the differential drive shafts.
PARKING BRAKE (see fig. 2)

The parking brake is operated by a control lever on the left−hand side of the operator.
When acting on the control lever, a flexible tie−rod operates the lever (12) inside the parking brake support (13), bearing the brake sector assembly (10 and 11) and the brake disks (8) keyed onto the driven gear (7) and locking it.
Locking the rear bevel pinion shaft intermediate gear (7), locks the rear bevel pinion shaft too and therefore the tractor cannot move.
…

SECTIONS................1
INTRODUCTION................2
  IMPORTANT WARNINGS................2
CONTENTS................3
SECTION 00 - GENERAL INSTRUCTIONS................12
  IMPORTANT NOTICE................12
  SHIMMING................12
  ROTATING SHAFT SEALS................12
  “O−RING” SEALS................12
  SEALING COMPOUNDS................12
  BEARINGS................13
  SPRING PINS................13
  SPARE PARTS................13
  TOOLS................13
  IMPORTANT NOTES................13
  MOVING THE TRACTOR WITH THE BATTERY REMOVED................13
  SAFETY REGULATIONS................14
  CONSUMABLES................17
SECTION 10 − ENGINE................18
  Chapter 1 − Engine................18
    General specifications................19
    Data................22
    Tightening torques................28
    Tools................30
    Engine views................31
    Lubrication diagram................33
    Cooling system diagram................34
    Fault diagnosis................38
    Engine R.I.................42
    Engine D.A. Checks, measurements and repairs................62
    Crankshaft front seal − Replacement................114
    Crankshaft rear seal − Replacement................117
    Valve tappet and rocker arm clearance − Adjustment................120
    Engine injector R.I................123
    Bosch injection pump R.I. Timing. Air bleed................126
    Coolant pump R.I.................134
    Thermostat valve R.I.................136
    Radiator R.I.................138
    Coolant pump and generator drive belts. Tension adjustment................144
SECTION 18 − CLUTCH................146
  Chapter 1 − Clutch................146
    Clutches. General specifications................147
    Tightening Torques................148
    Tools................148
    Cross−sectional views................149
    Fault diagnosis................150
    Checks, dimensions and repairs................151
    Main transmission clutch release − Adjustment................153
    Clutch R.I.................154
    Dual Clutch 12”/12” − Test bench overhaul and adjustment................157
SECTION 21 − TRANSMISSIONS................162
  Chapter 1 − Transmission and range gear (12 x 4)................162
    Transmission and range gear. Data................163
    Tightening Torques................164
    Tools................165
    Cross−sectional views................167
    Description and Operation................169
    Fault diagnosis................169
  Chapter 2 − Reverser................171
    Transmission with range gear and reverser. Data................172
    Tightening Torques................173
    Tools................174
    Cross−sectional views................174
    Description and Operation................176
    Fault diagnosis................176
    Clutch−reverser casing. Disassembly−Assembly................177
  Chapter 3 − Dual Command (2 Speed Power Shift)................183
    Data................184
    Tightening Torques................186
    Tools................187
    Cross−sectional views................188
    Description and Operation................192
    Fault diagnosis................198
    Clutch casing with Dual Command (2 Speed Power Shift) R.I................200
    Clutch casing with Dual Command (2 Speed Power Shift) D.A.................209
    Dual Command (2 Speed Power Shift) linkage adjustment................218
    Dual Command (2 Speed Power Shift) solenoid valve R.I.................219
    Dual Command (2 Speed Power Shift) control valve R.................223
    Dual Command (2 Speed Power Shift) control valve D.A.................227
  Chapter 4 − Reverser and creeper unit................230
    Data................231
    Tightening Torques................232
    Tools................233
    Cross−sectional views................235
    Description and Operation................237
    Fault diagnosis................237
    Reverser−clutch casing and creeper unit D.A.................238
  Chapter 5 − Power Shuttle transmission with Dual Command................245
    Data................246
    Tightening Torques................248
    Tools................250
    Cross−sectional views................252
    Description and Operation................255
    Clutch casing with Power Shuttle and Dual Command (2 Speed Power Shift) units D.A.................262
    Clutch (a) D.A.................269
    Clutch (B) D.A.................274
SECTION 23 − DRIVE LINES................275
  Chapter 1 − Drive lines................275
    Data................276
    Tightening Torques................277
    Tools................277
    Cross−sectional views................278
    Description of operation and hydraulic diagrams................279
    Fault diagnosis................280
    Services control valve R.I.................281
    Services control valve D.A.................284
    Drive gear housing R.I.................286
    Drive gear housing D.A.................291
SECTION 25 − FRONT AXLE MECHANICAL TRANSMISSION................295
  Chapter 1 − Front axle mechanical transmission................295
    Data................296
    Tightening Torques................298
    Tools................300
    Cross−sectional views................303
    Rules for correctly fitting the axle support to the engine................307
    Description of LIM−SLIP self−locking differential operation................309
    Description of front differential lock operation................310
    Fault diagnosis................311
    Front axle R.I.................312
    Front axle D.A. − Overhaul................316
    Front axle differential with LIM−SLIP unit − Overhaul................325
    Front axle differential with LIM−SLIP unit − Overhaul................326
    Differential lock clutch assembly − Overhaul................328
    Front epicyclic final drive without brake D.A.................330
    Front epicyclic final drive with brake D.A.................334
    Steering knuckle pins and bearings................337
    Adjustments................338
SECTION 27 − REAR AXLE MECHANICAL TRANSMISSION................347
  Chapter 1 − Rear axle mechanical transmission................347
    Data................348
    Tightening Torques................349
    Tools................351
    Cross−sectional views................356
    Description and Operation................361
    Fault diagnosis................362
    Gearbox−transmission casing R.I.................364
    Gearbox/transmission casing D.A. and adjustments................378
    Adjustments − differential lock control pedal travel................397
    Final drive casing R.I.................398
    Epicyclic final drive D.A.................401
    Drive wheel shaft D.A.................402
SECTION 31 − POWER TAKE−OFF................404
  Chapter 1 − Mechanical power take−off................404
    Data................405
    Tools................408
    Tightening Torques................409
    Cross−sectional views................410
    Description of operation................413
    Fault diagnosis................414
    Power take−off housing R.I.................415
    Power take−off driving shaft D.A.................418
    Driven shaft and other parts D.A.................418
  Chapter 2 − Electro−hydraulic power take−off................421
    Data................422
    Tools................425
    Tightening Torques................426
    Cross−sectional views................427
    Description, operation and hydraulic diagrams................433
    Fault diagnosis................444
    Power take−off clutch brake Replacement................445
    Electro−hydraulic power take−off housing R.I.................447
    Speed selection control device D.A.................451
    Power take−off driving shaft D.A.................451
    PTO driven shaft D.A.................451
SECTION 33 − BRAKES................458
  Chapter 1 − Brakes................458
    Data................458
    Tightening Torques................459
    Cross−sectional views................460
    Description and Operation................461
    Fault diagnosis................464
    Handbrake control. Travel adjustment................465
    Parking brake casing. R.I.................466
    Parking brake casing. D.A.................466
    Brake hydraulic system. Air bleed................469
    Service brake pump. R.I.................470
    Service brake cylinder. R.I.................472
SECTION 35 − HYDRAULIC SYSTEMS................477
  Chapter 1 − Rear mechanical hydraulic lift................477
    Data................478
    Tightening Torques................483
    Tools................485
    Cross−sectional views................486
    Description and Operation................488
    Fault diagnosis................492
    Rear lift oil pump D.A.................495
    Lift−O−Matic control D.A.................496
    Rear lift linkage adjustments................497
    Rear lift external controls D.A. and adjustments................500
    Rear lift R.I.................501
    Rear hydraulic lift internal controls D.A. and adjustments................508
    Arm shaft and lifting cylinder D.A.................508
    Lift shaft bushings − Replacement................508
    Lift control valve R.I.................519
    Lift control valve D.A.................521
    Lift pressure relief valve R.I.................526
    Lift pressure relief valve − Setting................526
  Chapter 2 − Open centre system auxiliary control valves................527
    Data − Tools................527
    Tightening Torques................528
    Cross−sectional views................529
    Description and Operation................532
    Troubleshooting................492
    Auxiliary control valves D.A.................536
    Flow control valve D.A.................539
  Chapter 3 − Auxiliary control valves for remote control (BOSCH)................542
    Data................543
    Tools................543
    Tightening Torques................544
    Description and Operation................545
    Auxiliary control valve components................547
    Control valve inter−connection................551
    Lifting oil flow (Cylinder extension)................552
    Lowering oil flow (Cylinder retraction)................554
    Neutral oil flow................555
    Float mode oil flow................556
    Automatic release pressure regulating valve operation................557
    Operation of two or more control valves simultaneously................558
    Auxiliary control valves R.I.................560
    Auxiliary control valves. D.A.................563
  Chapter 4 − Trailer brake auxiliary control valves................568
    Cross−sectional views................568
    Description and Operation................568
    Trailer brakes control valve hydraulic circuit diagram with KONTAK control valves................569
    Trailer brake control valve hydraulic circuit diagram with BOSCH control valves................570
    Functional testing and troubleshooting................577
  Chapter 5 − Supplementary cylinder................580
    Data................580
    Cross−sectional views................580
    Description and Operation................580
    Supplementary cylinder R.I.................581
    Supplementary cylinder D.A.................581
  Chapter 6 − Electronic draft control................582
    Data................583
    Tightening Torques................585
    Tools................585
    Details of electronic lift components................586
    Description and Operation................589
    Lift electronic control centre − Replacement................593
    Electronic lift control panel R.I.................594
    Lift arm potentiometer − Replacement................595
    Draft sensor R.I.................596
    Electronic lift calibration................598
    Electronic draft control R.I.................600
    Hydraulic control valve R. I.................606
  Chapter 7 − Ventral control valves for Walvoil−type open centre system................608
    Ventral control valve specifications................608
    Tightening torques................609
    Ventral control valve diagrams................610
    Ventral control valve joystick................612
    Control valve circuit................615
    Hydraulic diagram................616
    Description and operation of ventral control valve................617
  Chapter 8 − Front Loader................626
    Features................627
    Maximum permissible front axle weights................628
    Tightening torques................629
    Diagrams................630
    Ventral control valve specifications................633
    Ventral control valve joystick................635
    Switching full / dipped beam headlights on lights fitted on handrails................638
    Ballasting the tractor for front loader operation................642
    Loader general description................643
    Loader installation − removal................653
    Attachment installation − removal................658
    Lift arm types and functions................662
    “Smooth ride control”................671
    Multi Quick coupler connection − disconnection................674
    Hydraulic functions and flow diagram of loaders................686
    Hydraulic flow diagrams................697
    Repair instructions................714
    Hydraulic components................720
    Fault finding................725
SECTION 41 − STEERING................731
  Chapter 1 − Steering................731
    Data................732
    Tightening Torques................735
    Components and operating diagrams................736
    Fault diagnosis................741
    Tools................742
    Hydrostatic steering control valve R.I.................743
    Hydrostatic steering control valve D.A.................748
    Hydrostatic steering control valve bench tests................762
    Hydrostatic steering oil pump D.A.................765
    Front axle steering cylinder R.I.................766
    Front axle steering cylinder R.I.................767
SECTION 44 − AXLES AND WHEELS................768
  Chapter 1 − Axles and wheels................768
    Data................768
    Cross−sectional views................770
    Tightening Torques................771
    Fault diagnosis and equipment................772
    Front axle hub D. A.................773
    Front axle R.I.................776
    Stub axle Overhaul................779
    Checking 2 WD front wheel camber and toe−in................782
    Checking 4 WD front wheel alignment................783
SECTION 50 − AUXILIARY UNITS................784
  Chapter 1 − Auxiliary units................784
    Safety regulations................785
    General specifications................786
    Tools................787
    Operating principles................788
    Main components of the cab air conditioning system................790
    Warnings for air conditioning system repair operations................794
    Cab controls................795
    Instructions for use − air conditioning system................798
    Refrigerant recovery − recycling and evacuation − charging stations................798
    Electronic leak detector 380000314................799
    Air conditioning system maintenance................800
    Air conditioning system troubleshooting................801
    Air conditioning system troubleshooting................802
    Cab air conditioning system functional testing................806
    Checking for gas leaks with leak detector 380000314................807
    Compressor drive belts. Tension adjustment................808
    Air conditioner compressor. R.I.................810
    Heating pipes. Replacement................813
    Air conditioning pipes. Replacement................815
    Air conditioner condenser. Replacement................821
    Dryer filter. Replacement................822
    Cab heater unit. R.I.................824
    Air conditioner evaporator. Replacement................827
    Electric cab fan. R.I.................830
SECTION 55 − ELECTRICAL SYSTEM................832
  Chapter 1 − INSTRUMENTS................832
    Control panel................833
    Analog/Digital Instruments................835
    Instruments................835
    Liquid crystal displays................836
    Central display................837
    Using the advanced keypad................841
    Transmitters, sensors, switches................843
    Maintenance................851
  Chapter 2 − COMPONENTS................852
    Introduction................852
    Description of components................853
    Advanced Keypad................857
    Controls on right−hand mudguard................860
    Cab controls................862
    Controls on right−hand cab upright................864
    Maintenance................866
  Chapter 3 − STARTING SYSTEM................868
    Technical data................868
    Tightening torques................868
    Description and operation................869
    Troubleshooting................871
    System testing................872
    Removal−Installation................874
    Bench tests................877
  Chapter 4 − CHARGING SYSTEM................879
    Technical data................879
    Tightening torques................879
    Description and Operation................880
  Chapter 5 − BATTERY................897
    Technical data................897
    Description and operation................897
    Removal−Installation................898
    Battery checking and maintenance................900
    Tests................902
  Chapter 6 − ELECTRICAL CIRCUITS................905
    Electrical circuit components................907
    Fuses and relays (version with cab)................912
    Maxi fuse box (version with cab)................917
    Fuse and relay layout (North America version without cab −................920
    Fuse and relay layout (ISO version without cab −................922
    Fuse and relay layout (North America version without cab −................924
    Maxi fuse box (ISO − North America version without cab)................926
    Power sockets................927
    Operator safety circuit................928
    Grid heater relay................929
    Grid heater control module................929
    Electronic flasher module................929
    Ground location points................930
    Symbols used in electrical circuits................932
    Electric wire colour code................933
    Electrical circuits................934
    Wiring DIAGRAMS A − A/1................935
    Starter and recharging circuit − DIAGRAM A/1................944
    Battery cut−out circuit − DIAGRAM B................950
    Wiring DIAGRAM C................957
    Wiring DIAGRAMS D − E................967
    Wiring DIAGRAM F................983
    Wiring DIAGRAMS G − H................993
    Wiring DIAGRAMS I − L − M................1007
    Wiring DIAGRAMS N/1 − N/2 − O/1 − O/2................1027
    Wiring DIAGRAMS P − Q − R/1 − R/2................1057
    Wiring DIAGRAM S................1083
    Wiring DIAGRAM T................1095
    Electronic transmission control unit input/output circuit (TCM) − DIAGRAM U................1104
    Measuring device control unit input/output circuit (ADIC) − DIAGRAM V................1106
    Electronic rear lift control unit input/output circuit − DIAGRAM W................1108
    Measuring device (ADIC) and transmission control unit (TCM) connection diagram −................1110
  Chapter 7 − Components Testing................1112
    Low transmission oil pressure switch Brake fluid level switch  Air filter clogged switch Differential lock indicator switch Lift status switch................1113
    Italia version trailer brake valve pressure switches Brake light switch Engine coolant temperature sensor Fuel sediment filter switch ................1115
    Handbrake status switch Dual Command (2 Speed Power Shift) switch Gear/Range lever position sensors................1117
    Engine oil pressure sensor Switch and clutch pedal potentiometer Speed sensors   Clutch pressure switches A and B and oil temperature sensor Alternator ................1120
    Radar 4WD pressure switch Fuel level indicator Power Shuttle lever................1124
    Electronic lift arm position potentiometer Seat safety switch Draft pin sensors PTO speed sensor ................1126
    Front windscreen wiper motor. R.I.................1128
  Chapter 8 − Fault Codes................1129
    Introduction................1130
    Special Tools................1131
    Wiring Harness Repairs................1131
    Digital Multi−Meter − Basic Operation................1134
    Electrical Test Procedures................1137
    Circuit Components − Basic Description................1140
    Controller Area Network (CAN) System................1150
    Fault Code Displays................1151
    H−Menu Diagnostic Mode................1153
    Fault Code Lists................1154
    Calibration U−Codes................1161
    2001−3000 (Transmission)................1165
    5001−6000 (Rear Power Take−Off)................1367
    6001−7000 (Four Wheel Drive)................1385
    7001−8000 (Differential Lock)................1395
    14001−15000 (Analog Digital Instrument Cluster)................1409
    Electronic Draft Control (EDC)................1477
  Chapter 9 − HH MENU AND CALIBRATIONS................1553
    HH MENU access................1554
    HH MENU of the control panel................1556
    HH MENU of the transmission................1563
    HH MENU of the advanced keypad................1576
SECTION 90 − BODYWORK AND DRIVING POSITION................1578
  Chapter 1 − Removal of components................1578
    Platform. R.I.................1579
    Bonnet. R.I.................1587
    Driver’s seat. R.I.................1589
    Cabt. R.I.................1590
    Cab right− or left−hand door. R.I.................1603
    Cab windscreen. Repl.................1604
    Cab RH or LH bottom front window. Repl.................1604
    Cab rear window. Repl.................1606
    Left−hand upright strip. Repl.................1609
    Right−hand upright strip. Repl.................1610
    Fixed padding on right−hand wall. Repl.................1612
    Fixed padding on left−hand wall. Repl.................1615
    Hydraulic control lever guard. Repl.................1617
    Cab ceiling trim. Repl.................1619
New Holland TL70A, TL80A, TL 90A, TL100A Tractors Factory Service & Shop Manual