Part of the New Holland Repair Manuals.
Looking for the New Holland TT45A, TT50A repair manual PDF? All 682 pages of this factory repair manual (OEM #87655301) cover both tractor models, from engine overhaul through clutches, transmission, rear axle, PTO, brakes, steering, and front axle. You get complete wiring diagrams for the battery, alternator, starter, and harnesses, plus hydraulic schematics covering the pump, lift assembly, control valve, and relief valve. A full troubleshooting section and metric bolt torque tables back up every teardown. Torque the cylinder head bolts to 98-103 N·m in sequence, half value first, then final. Check clutch plate thickness at 10.5 ± 0.3 mm for the transmission and 7.6 ± 0.3 mm for the PTO before you reassemble. Bookmarked by system and keyword-searchable; pull it up on your phone and get back in the field.
What's Inside This New Holland TT45A, TT50A Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 29-66 | Federal Emissions Warranty, California Emission Control Warranty Statement, Health and Safety Precautions, Safety |
| Engine | 67-198 | Specifications, Metric Bolt Torque Specifications, Troubleshooting, Overhaul |
| Clutches | 199-232 | Clutch Pedal, Cross Shaft, Release Bearing Assembly, Clutch Assembly, Release Fingers |
| Transmission System | 233-300 | Transmission Assembly, Input Shaft, Reverse Gear, Pinion Shaft, Gear Shift Lever |
| Mechanical Rear Wheel Drive | 301-356 | Ring Gear, Differential Assembly, Differential Housing, Rear Axle, Final Drive Housing |
| Power Take-Off | 357-382 | PTO Levers, Internal Linkages, PTO Shafts, PTO Clutch, PTO Brake |
| Braking System | 383-400 | Brake Pedals, External Linkages, Parking Brake Linkage, Brake Assembly, Brake Actuator |
| Hydraulic System | 401-462 | Hydraulic Pump, Hydraulic Lift Assembly, Control Valve, Lift Arm Shaft, Relief Valve |
| Steering Systems | 463-500 | Hydrostatic Steering Reservoir, Steering Motor, Steering Cylinder, Steering Pump, Relief Valve |
| Front Axle | 501-520 | Front Axle Assembly, Front Wheel Hub, Spindle Assembly, Axle Pivot Pin, Swivel Pin |
| Electrical System | 521-674 | Battery, Alternator, Starter Motor, Instrument Panel, Wiring Harnesses, Relays |
| Bodywork | 675-682 | Engine Hood Panel, Rear Wheel Fenders, Roll-Over Protection Bar, Battery |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Battery | 12 Volts - 600 CCA BCI Group-47 | p. 64 |
| Cylinder Head Bolts | 98 - 103 N⋅m (72.3 - 76 ft-lb) | p. 80 |
| head bolts final torque | 98 - 103 N·m (72.3 - 76 ft-lb) | p. 139 |
| Transmission clutch plate thickness | 10.5 ± 0.3 mm (0.41 ± 0.0118 in) | p. 200 |
| PTO clutch plate thickness | 7.6 ± 0.3 mm (0.30 ± 0.0118 in) | p. 200 |
| Bolts securing wheel disc to wheel shaft | 267 Nm (197 ft-lb) | p. 335 |
| Filter replacement interval | after the first 50 hours of use and every 300 hours of use thereafter | p. 409 |
| Fuse 1 rating | 15 amp | p. 529 |
| Fuse 2 rating | 15 amp | p. 529 |
| Fusible link rating | 20 amps | p. 529 |
| Electrolyte level above plates | 6.35 mm | p. 528 |
| Fuel shutoff solenoid actuating pin protrusion distance A | 25.5 - 26.4 mm (1.004 - 1.040 in) | p. 560 |
