Part of the Case IH Repair Manuals.
Rear PTO stalling under load, or a remote valve that will not hold? Answers live in the 884-page Case IH Farmall 45A, Farmall 55A Service Manual PDF, factory document 84300849, written for both tractors. Wiring diagrams trace lighting and starting circuits from key switch to glow plug, and hydraulic schematics lay out the open center mechanical remote valve so you can follow flow before you crack a fitting. Troubleshooting charts sit right beside the hydraulic and electrical section, and torque tables open the book. Test pump efficiency against 15858 kPa (2300 psi), set alternator belt deflection at 10 to 15 mm (0.39 to 0.59 in), and change the hydraulic filter at 50 hours, then every 300. A rebuild stalls at the one clearance nobody wrote down. Bookmarked and keyword-searchable, it downloads once and stays yours for every season you run this tractor.
What's Inside This Case IH Farmall 45A, Farmall 55A Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 5-32 | Safety Rules, Basic Instructions Hardware, Torque Specification Tables |
| Hydraulic - Pneumatic - Electrical - Electronic Systems | 33-80 | Primary Hydraulic Power System (Open Center Mechanical Remote Valve), Hydraulic Command System, Electrical Power System, Lighting System |
| Engine | 81-230 | Engine Specifications, Torque Specifications, Engine Identification, Cylinder Head, Cylinder Block |
| Fuel and Injection System | 231-378 | Fuel Injection Pump, Governor, Fuel Shut-Off Solenoid, Fuel Injector, Fuel Level Sender |
| Air Intake System | 379-384 | Air Filter Restriction Switch, Air Intake Manifold |
| Exhaust System | 385-388 | Exhaust Manifold |
| Engine Coolant System | 389-414 | Thermostat, Water Pump, Radiator, Cooling Fan, Coolant Temperature Sending Unit |
| Lubrication System | 415-440 | Oil Pump, Oil Filter, Oil Pressure Regulator Valve, Engine Breather Valve, Oil Pressure Switch |
| Starting System | 441-472 | Starter Motor, Starter Solenoid, Key Switch, Glow Plug |
| Transmission, Drive and PTO Out | 473-626 | Power Coupling Clutch, Transmission Mechanical, Rear PTO Mechanical |
| Axles, Brakes and Steering | 627-840 | Front Axle, Rear Axle, 2WD-4WD System Mechanical, Steering Hydraulic, Service Brake Mechanical, Parking Brake Mechanical |
| Frame and Cab | 841-884 | Shield, User Controls and Seat, User Platform, Safety Security Accessories |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Hydraulic filter replacement interval | after the first 50 hours of use and every 300 hours of use thereafter | p. 49 |
| System pressure for pump efficiency test | 15858 kPa (2300 psi) | p. 86 |
| Alternator drive belt deflection | 10 - 15 mm (0.39 - 0.59 in) | p. 162 |
| Battery cold cranking ability | 600 A at -18 °C (0 °F) | p. 130 |
| Pump mounting nuts and bolts torque | 13 - 17 N·m (9.6 - 12.5 lb ft) | p. 361 |
| Air filter restriction switch closing vacuum | 6.2 kPa (635 mm (25 in) of water) | p. 381 |
| Front Axle (FWD) Oil Capacity | 7.5L | p. 21 |
| Farmall 45A | ||
| Drive Belt Tension | 10 - 15 mm (0.39 - 0.59 in) deflection @ 89 - 111 N (20 - 25 lb) of force | p. 118 |
| Engine Crankcase Oil Capacity | 5.5L | p. 21 |
| Cooling System Capacity | 8.5L | p. 21 |
| Farmall 55A | ||
| Engine Crankcase Oil Capacity | 7.0L | p. 21 |
| Cooling System Capacity | 10.0L | p. 21 |
Case IH Farmall 45A, Farmall 55A Common Problems This Manual Covers
Case IH Farmall 45A won't crank or starts intermittently until the shuttle or range lever moves
Check the battery first: it should meet 600 A cold cranking at -18 °C (0 °F), the rating given on page 130. Clean the terminal ends and ground strap down to bare metal. Then work the safety start circuit in the starting system chapter beginning on page 441, wiggling the seat switch and the solenoid spade connector.
Manual Section: Starting System p. 441Three-point hitch lifts slow or jerky under load, lift arms cycle up and down
Check the transmission and rear axle oil level first; the sump holds 25L when filled. Replace the hydraulic filter next, due after the first 50 hours of use and every 300 hours thereafter per page 49. Then test pump output and confirm system pressure reaches 15858 kPa (2300 psi), the figure on page 86.
Manual Section: Hydraulic - Pneumatic - Electrical - Electronic Systems p. 65Hard starting, rough idle, and power loss pulling a baler or rotary cutter
Drain the water separator and change the fuel filter cartridge, then bleed air out of the lines. Check for a restricted air filter: the restriction switch closes at 6.2 kPa (635 mm (25 in) of water) per page 381. If injection pump mounting hardware was disturbed, torque those nuts to 13 to 17 N·m (9.6 to 12.5 lb ft).
Manual Section: Fuel and Injection System p. 231Steering feels heavy and slow to respond with a full loader bucket or rear ballast
Top off the transmission and rear axle reservoir, 25L total, since steering and lift share it. Tee a gauge into the steering supply and verify maximum pressure holds 13700 kPa, the value on page 23. Torque front wheel bolts to 123 N·m before you call it good. Loose wheel hardware mimics steering wander.
Manual Section: Axles, Brakes and Steering p. 627Tractor creeps forward after releasing the clutch pedal, or gears are hard to engage
Measure clutch pedal free play and adjust the linkage before you suspect internal wear. Inspect the shuttle and range lever detents, and check the wet clutch pack fluid level: the transmission and rear axle hold 25L. Work through the transmission mechanical procedures starting on page 473 if creep continues after adjustment.
Manual Section: Transmission, Drive and PTO Out p. 473Battery goes dead overnight, dash charge light flickers, headlights dim at low idle
Check alternator drive belt tension first: deflection should be 10 to 15 mm (0.39 to 0.59 in) under 89 to 111 N (20 to 25 lb) of force, per page 162. Replace a glazed belt, clean both battery terminals, and load test the battery against its 600 A cold cranking rating. Do it before first cutting.
Manual Section: Engine p. 162Frequently Asked Questions
What are the torque specifications for the front wheel disc-to-hub bolts on a Farmall 45A or 55A?
The torque specification for the front wheel disc-to-hub bolts on both the Farmall 45A and Farmall 55A is 123 N·m (91 lb ft). p. 26
What is the engine oil capacity for a Farmall 55A tractor?
The engine crankcase oil capacity for the Farmall 55A is 7.0 liters (7.4 US qt). p. 21
What is the correct valve lash for the Farmall 45A and 55A engines?
The valve lash for both the Farmall 45A and 55A engines, when cold, is 0.2 mm (0.008 in). p. 21
What is the torque specification for the cylinder head bolts on the Farmall 45A and 55A?
The cylinder head bolts for both the Farmall 45A and 55A should be tightened to a final torque of 98 - 103 N·m (72.3 - 76 lb ft). p. 87
How often should the engine oil filter be replaced on the Farmall 45A and 55A?
The oil filter must be replaced every 100 hours of operation. When installing a new filter, coat its face with clean oil and hand tighten only. p. 137
Do I get instant access to this Case IH Farmall 45A Service Manual?
A 884-page Service Manual in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Is this Case IH Farmall 45A manual print-friendly?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
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