Part of the Case IH Repair Manuals.
Hydraulics, power shuttle transmission, rear PTO, front and rear axles, steering, brakes, and cab controls all get walked end to end across the 881 pages of the Case IH Farmall 45A, Farmall 55A service manual PDF, OEM number 84525653A. Wiring diagrams trace the electrical power and lighting circuits back to the battery, while hydraulic schematics lay out the open center mechanical remote valve and the Hydraulic Command System in full. Troubleshooting charts let you work a symptom down to a cause before you pull anything apart, and the transmission and axle work fills well over half the book. Set brake pedal free travel at 50 to 55 mm (1.96 to 2.16 in); change the suction filter after the first 50 hours, then every 300. Nobody else is in the shop at 9 pm. Bookmarks and a live text layer put you on the right procedure in seconds, so your field window stays open.
What's Inside This Case IH Farmall 45A, Farmall 55A Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 4-33 | Safety Rules, Torque Specification Tables, General Specification |
| Hydraulic, Pneumatic, Electrical, Electronic Systems | 34-295 | Primary Hydraulic Power System (Open Center Mechanical Remote Valve), Hydraulic Command System, Electrical Power System, Lighting System |
| Engine and PTO in | 296-327 | Engine, Engine Coolant System |
| Transmission, Drive and PTO Out | 328-581 | Power Coupling Clutch, Transmission Mechanical, Transmission Power Shuttle, Rear PTO Mechanical |
| Axles, Brakes and Steering | 582-827 | Front Axle, Rear Axle, 2WD-4WD System Mechanical, Steering Hydraulic, Service Brake Mechanical, Parking Brake Mechanical |
| Frame and Cab | 828-881 | Shield, User Controls and Seat, User Platform, Safety Security Accessories Safety, Foreword, Foreword Ecology and the Environment, Advice, International Symbols |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Battery cold cranking ability | 600 A at -18 °C (0 °F) | p. 159 |
| Starter KW(HP) Rating | 2.0 kW (2.7 Hp) | p. 22 |
| Radiator cap pressure relief valve | 90 kPa (13 psi) | p. 316 |
| Brake Pedal Free Travel | 50 - 55 mm (1.96 - 2.16 in) | p. 23 |
| Headlight bulb type | dual element 35 W/ 35 W, halogen | p. 278 |
| Suction type filter replacement interval | after the first 50 hours of use and every 300 hours of use thereafter | p. 59 |
| Suction tube to filter base cap screw torque | 22.6 - 28.4 N·m (16.7 - 20.9 lb ft) | p. 103 |
| Battery electrolyte level | 6.35 mm (0.25 in) above the plates | p. 245 |
| Nominal Brake Disc Thickness | 4.65 mm (0.183 in) | p. 792 |
| Farmall 45A | ||
| Engine Crankcase Oil Capacity | 5.5 l (5.8 US qt) | p. 21 |
| Cooling System Capacity | 8.5 l (9.0 US qt) | p. 21 |
| Farmall 55A | ||
| Engine Crankcase Oil Capacity | 7.0 l (7.4 US qt) | p. 21 |
Case IH Farmall 45A, Farmall 55A Common Problems This Manual Covers
Case IH Farmall 45A won't start or cranks slowly, no click from the starter
Check battery electrolyte first: it should sit 6.35 mm (0.25 in) above the plates per the spec on page 245. Load test the battery against the 600 A cold cranking rating listed on page 159. If cranking is still weak, work the safety start circuit checks in the electrical troubleshooting section and verify the 2.0 kW (2.7 Hp) starter draw.
Manual Section: Electrical Power System TroubleshootingTractor creeps forward and backward after releasing the pedals, shuttle won't fully neutralize
Inspect the shuttle and clutch linkage for slop before touching internals. Pull the release fork and confirm the fork bolts torque to 68 N·m (50 lb ft) and clutch assembly mounting bolts to 26 N·m (19 lb ft), both listed on page 339. Then run the self disengagement and difficult engagement checks in the transmission troubleshooting chart.
Manual Section: Transmission Mechanical TroubleshootingLoader and three-point hitch lift slow, jerky, or won't hold under a full bucket
Drain and change the suction filter on the interval given on page 59: first 50 hours, then every 300 hours. Torque the suction tube to filter base cap screws to 22.6 to 28.4 N·m (16.7 to 20.9 lb ft) as specified on page 103. Then follow the low lift capacity and lift arms leak down checks in the hydraulic chart.
Manual Section: Primary Hydraulic Power System TroubleshootingEngine runs hot on a long PTO pull, coolant pushing out the overflow
Clean the radiator core and screen of chaff before anything else. Test the radiator cap: the pressure relief valve opens at 90 kPa (13 psi) per page 316. Refill capacity is 8.5 l (9.0 US qt) on the 45A and 10.0 l (10.5 US qt) on the 55A, both listed on page 21. Check fan belt tension and thermostat travel.
Manual Section: Engine Coolant System p. 296Brake pedals go soft or one side grabs harder than the other
Measure pedal free travel: spec is 50 to 55 mm (1.96 to 2.16 in) on page 23. Adjust both sides equally so the tractor tracks straight under braking. Pull the discs and measure thickness against the 4.65 mm (0.183 in) nominal on page 792. Replace any disc at or below 4.30 mm (0.169 in). Torque rear wheel disc-to-hub hardware to 192 N·m (142 lb ft).
Manual Section: Service Brake Mechanical p. 792Steering wheel heavy to turn or spins without the front wheels following
Verify hydraulic oil level and check the suction filter for restriction before condemning the steering unit. Torque front wheel disc-to-hub fasteners to 123 N·m (91 lb ft) as listed on page 26, then recheck for backlash and wander. Work the motoring effect and snake-like driving checks in the steering hydraulic chart to isolate the valve from the cylinder.
Manual Section: Steering Hydraulic TroubleshootingFrequently Asked Questions
What is the torque specification for the front wheel disc-to-hub bolts on the Farmall 45A and 55A tractors?
The torque specification for the front wheel disc-to-hub bolts on both the Farmall 45A and 55A tractors is 123 N·m (91 lb ft). p. 26
What is the recommended engine oil capacity for the Farmall 45A and 55A tractors?
The engine crankcase oil capacity for the Farmall 45A is 5.5 liters (5.8 US qt), and for the Farmall 55A, it is 7.0 liters (7.4 US qt). p. 21
What is the correct battery type and cold cranking amperage for the Farmall 45A and 55A tractors?
The tractors are equipped with a BCI group 47, 12 V battery with a minimum cold cranking ability of 600 A at -18 °C (0 °F). p. 159
What is the torque specification for the transmission housing to clutch housing attaching bolts on the Farmall 45A and 55A?
The torque specification for the transmission housing to clutch housing attaching bolts is 88 N·m (65 lb ft). p. 339
What is the correct valve tappet clearance for the Farmall 45A and 55A engines?
The tappet clearance for both intake and exhaust valves (cold) is 0.2 mm (0.008 in). p. 21
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