Part of the New Holland Repair Manuals.
Hydrostatic drive work separates the shops that guess from the ones that measure, and this 553-page New Holland TC54, TC56, AL59 repair manual PDF (OEM ID 604.64.961.00) walks you through that circuit before covering the rest of the combine: engine overhaul, transmission, threshing drum, straw walkers, cleaning shoe, and cab climate control. Wiring diagrams fill a long stretch of the back of the book, tracing every harness from battery to cab for both electrical systems. Separate schematics map the TC and AL hydraulic circuits, so the drawing on your bench matches the machine in the yard. Set the variator drive pulley clearance to 16.5 mm when the sheaves come apart, and torque the injection pump fastening screws to 27 Nm on reassembly. A guessed torque figure can crack a housing mid-harvest. This bookmarked, keyword searchable PDF goes wherever the combine does; download it before the crop is ready.
What's Inside This New Holland TC54, TC56, AL59 Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 4-25 | Safety Regulations, Units of Measure |
| Engine | 26-105 | Engine Overhaul, Cylinder Head, Crankshaft |
| Transmission | 106-197 | TC Transmission, AL Transmission |
| Front Mechanical Drive | 198-217 | TC Final Drives, AL Final Drives |
| Hydrostatic Transmission | 218-235 | Hydraulic System TC, Hydraulic System AL |
| Brakes and Controls | 236-253 | TC Brakes, AL Brakes |
| Hydraulic Systems | 254-307 | Hydraulic Components TC, Hydraulic Components AL |
| Steering | 308-323 | TC Steering, AL Steering |
| Cab Climate Control | 324-363 | Climate Control System, Compressor |
| Electrical System | 364-471 | Wiring Diagrams |
| Product Feeding | 472-479 | Straw Elevator |
| Threshing | 480-497 | Drum and Concave |
| Separation | 498-511 | Beater, Straw Walker |
| Cleaning | 512-537 | Cleaning Fan, Cleaning Shoe |
| Grain Storage | 538-543 | Crop Transport |
| Platform, Cab, Bodywork and Decals | 544-553 | Windscreen Removal |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Minimum Hardware Tightening Torques (Metric) | 1.7 Nm to 1160 Nm | p. 21 |
| Oil pump delivery | 91 l/min. at 2100 engine rpm and 1.38 bar | p. 38 |
| Injection pump fastening screws torque | 27 Nm | p. 30 |
| Variator drive pulleys clearance | 16.5 mm | p. 162 |
| Variator rod clearance X | 3 + 3 mm | p. 162 |
| Pump max. flow | 100 cm3/rev. | p. 233 |
| Pressure charge pump flow | 17 cm3/rev. | p. 233 |
| Return oil filter by-pass valve calibration | 1.14 bar | p. 261 |
| High pressure filter by-pass valve calibration | 3.5 bar | p. 261 |
| Engine Oil Capacity (6 CYL) | 23.0L | p. 39 |
| Valve Clearance (Intake, cold) | 0.36 - 0.46 mm | p. 27 |
| Valve Clearance (Exhaust, cold) | 0.43 - 0.53 mm | p. 27 |
New Holland TC54, TC56, AL59 Common Problems This Manual Covers
New Holland TC56 self propel variator moves forward but will not respond in reverse
Test charge pressure first; it must hold 26 bar per the pump specifications on page 233 before you condemn the control valve. Check the forward and reverse solenoid wiring at the console for corroded pins. If charge pressure is good, verify both high pressure circuits reach the 420 bar relief setting.
Manual Section: Hydrostatic Transmission p. 233Header lift intermittent or dead, platform raises only after wiggling the joystick
Pull the header lift relay and check for burned contacts before chasing wires. Trace the joystick circuit with the wiring diagram and clean every connector under the console. If the electrical side checks good, confirm the return filter by-pass valve holds its 1.14 bar calibration on page 261.
Manual Section: Electrical SystemThreshing drum loses rpm and bogs down in heavy crop, variator belt slipping
Inspect the variator belt for glazing and measure its protrusion; replace it once it stands more than 3 mm proud of the pulley. Set belt distance X to 179 mm plus or minus 2.5 mm using the procedure on page 490, and keep at least 5 mm clearance between the variator links and pulleys.
Manual Section: Threshing System Troubleshooting p. 490Hydraulic functions slow and weak once the oil warms up, unloader and auger drag
Check the reservoir oil level cold on level ground before anything else; low oil pulls air and foams the fluid. Drain and refill if the oil looks milky, then replace both hydraulic filters. Verify the high pressure filter by-pass valve calibration at 3.5 bar on page 261, and inspect suction lines for cracks.
Manual Section: Hydraulic Systems p. 254Engine overheats after a long afternoon in the field, coolant pushing out the overflow bottle
Blow the chaff out of the radiator and rotary screen first; a packed core will overheat any combine by mid afternoon. Pressure test the radiator cap and replace it if it opens below 1.0 bar, the spec on page 40. Check fan belt tension and spin the fan bearing by hand for roughness.
Manual Section: Engine Fault Finding p. 40Frequently Asked Questions
What refrigerant and quantity does the A/C system on the New Holland TC54, TC56 and AL59 use?
The A/C system uses R134a coolant. The required quantity for the system is 1850 grams. p. 327
What type of plug-in relays must be used in the New Holland TC54, TC56 and AL59 electrical system?
The plug-in relays used must be fitted with a suppressor built inside the relay, parallel with the coil. You must never use relays with a diode parallel with the coil or without a suppressor. p. 368
What is the cylinder head bolt tightening sequence on the New Holland TC54, TC56 and AL59 engine?
When refitting the cylinder head, the greased bolts must be tightened in sequence in stages: 55 Nm, then 95 Nm, and finally a further 90 degrees using a torque angle gauge. p. 41
What is the cold valve clearance on the New Holland TC54, TC56 and AL59 engine?
For a cold engine, the intake valve clearance should be between 0.36 and 0.46 mm, and the exhaust valve clearance should be between 0.43 and 0.53 mm. p. 27
What is the oil capacity of the 6-cylinder engine on the New Holland TC54, TC56 and AL59?
The oil capacity for the 6-cylinder engine is 23.0 litres. p. 39
Is this New Holland TC54 manual a download or a disc?
A 553-page Repair Manual in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Can I print this New Holland TC54 manual?
You can. The PDF is unlocked and carries no copy protection, so print the sections you want and keep the file as your backup.
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