Need the Case IH Farmall 40, 45, and 50 repair manual PDF from the factory itself? All 1,414 pages of OEM publication #87473193 are split across 14 system-specific sections, covering both the 12×12 synchronized shuttle transmission and the hydrostatic variant, plus engine, clutch, FWD front axle, differential, PTO, brakes, steering, climate control, and platform procedures. Inside: hydraulic schematics with complete fluid routing, a dense wiring section packed with electrical diagrams, system-by-system troubleshooting for every drivetrain and control circuit, and page after page of torque charts. Set injection pump timing to 20-22° BTDC; torque the HST port block bolts to 70.6 N·m (52 ft-lbs): your factory numbers, not forum estimates. Your machine is down. Bookmarked and keyword-searchable, this PDF opens on any device; grab your tablet and get back to work.
What's Inside This Case IH Farmall 40/45/50 Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 53-102 | Introduction, Precautionary Statements (Personal Safety, Machine Safety, Information), Technical Information (Hardware, Safety), Decals -- Farmall 40, 45 |
| Engine | 103-240 | Specifications, Metric Bolt Torque Specifications, Special Tools, Compression Test and Tools, Operation, Troubleshooting, Cylinder Head and Valve Train Components |
| Clutch | 241-270 | Specifications, Bolt Torques, Special Tools, Operation, Troubleshooting |
| Transmission | 271-342 | Specifications, Metric Bolt Torque Specifications, Special Tools, Operation (Cross Section -- 12 X 12 Transmission, Powerflow), Troubleshooting |
| FWD Front Axle | 343-366 | Specifications (Front to Rear Axle Ratio), Bolt Torque Specifications, Special Tools, Operation -- FWD Front Axle, Troubleshooting |
| Differential, Rear Axle | 367-398 | Specifications, Bolt Torque Specifications, Special Tools, Operation (Differential, Differential Lock, Rear Axle), Overhaul (Differential, Drive Pinion, Rear Axle, Final Pinion) |
| Hydrostatic Transmission | 399-482 | Specifications, Metric Bolt Torque Specifications, Special Tools |
| Power Take-Off (PTO) Systems | 483-556 | Specifications (PTO: Hydraulic System, Clutch), Metric Bolt Torque Specifications, Special Tools, Operation (Rear PTO, Hydraulic Fluid Flow), Troubleshooting |
| Brakes | 557-568 | Specifications, Bolt Torque Specifications, Operation (Brakes, Park Brake), Overhaul (Brakes) |
| Hydraulic System | 569-640 | Hydraulic System Operation, Pump Service, Lift System, Remote Control Valves, Cylinder Service, Troubleshooting |
| Steering | 641-684 | Specifications (Power Steering System), Metric Bolt Torque Specifications, Special Tools (Power Steering Pump, Steering Cylinder -- FWD, Power Steering Operation -- FWD) |
| Climate Control | 685-760 | Specifications (Compressor, Refrigerant, Refrigerant Oil, Low Pressure Switch, High Pressure Switch), Special Tools |
| Electrical | 761-1308 | Bolt Torque Specifications |
| Platform | 1309-1414 | Hood (Removal, Installation), Rear Hood Side Panels (Removal, Dash Console (Removal, Seat -- Gear Models (Removal |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| HST Port Block Retaining Bolts Torque | 70.6 N⋅m (52 ft-lbs) | p. 402 |
| Fuel Injection Pump Timing (Before TDC) | 20 -- 22° | p. 203 |
| Fuel Injection Pump Timing (Piston Height at Injection: Start BTDC) | 3.539 -- 4.267 mm (0.1393″ -- 0.1680″) | p. 203 |
| No. of Brake Discs | 3 | p. 558 |
| Total Brake Disc Thickness | 4 mm (0.158 in.) | p. 558 |
| Lift Cylinder Diameter | 80 mm (3.155 in.) | p. 572 |
| Theoretical Displacement of the Charge Pump | 6.2 cm3/rev | p. 402 |
| Charge Pressure | 8.8 bar (128 psi) at 2600 rpm | p. 402 |
| Low power (Possible Cause) | Valve pressure setting too low | p. 416 |
| Low power (Remedy) | Replace high pressure relief valves or replace port block as required | p. 416 |
| Implement fails to lift when lever is in raised position (Possible Cause) | Linkage out of adjustment | p. 586 |
| Implement fails to lift when lever is in raised position (Remedy) | Adjust external and internal linkage | p. 586 |
Case IH Farmall 40/45/50 Common Problems This Manual Covers
Case IH Farmall 40, 45, 50 hydrostatic transmission losing power or overheating under heavy load. p. 416
Inspect the transmission cooler fins and clean out any debris. Check the charge pump trochoid rotor side clearance, which must be between 0.02 and 0.03 mm (0.0007 and 0.001 in.) as shown on page 448. Replace the high pressure relief valves if the pressure setting is too low.
Manual Section: Hydrostatic TransmissionEngine stalling with white exhaust smoke during cold start or completely failing to turn over.
Test the injection nozzle valve opening pressure. Verify the pressure reaches exactly 147 bar (2150 psi) according to the specifications on page 204. Check the fuel injection pump timing and adjust it to 20 to 22 degrees before top dead center to resolve the cold start issue.
Manual Section: Engine (General)Brake system slipping when carrying heavy implements or completely lacking rear stopping power. p. 558
Remove the rear axle housing to access the brake assembly. Inspect all 3 brake discs for excessive wear or glazing, as specified on page 558. Replace the entire disc pack if the friction material is worn down past the standard limits. Refill the transmission with fresh fluid.
Manual Section: BrakesHydraulic lift not raising fully or rear implement rises extremely slowly after rebuilding the pump. p. 586
Perform a system relief valve pressure test as directed on page 586. Clean or replace the restricted sump screen filter if the implement rises too slowly. Inspect the lift cylinder, which has an 80 mm (3.155 in.) diameter according to page 572, and replace any leaking internal seals.
Manual Section: Hydraulic SystemFrequently Asked Questions
Torque specs for Farmall 40 engine bolts?
The manual provides detailed torque specifications for various engine bolts on the Farmall 40. For example, Connecting Rod Cap Bolts should be torqued to 49-54 N⋅m (36-40 ft-lbs), Main Bearing Retaining Bolts to 49-54 N⋅m (36-40 ft-lbs), and Cylinder Head Bolts to 98-103 N⋅m (72.3-76 ft-lbs).
Torque specs for PTO bolts on Farmall 40?
The manual provides general metric bolt torque specifications that apply to PTO bolts. For example, M10 7T, 8T, 8.8 bolts should be torqued to 32.5-41.2 Foot-Pounds (44.1-55.9 Newton-Meters), and M12 7T, 8T, 8.8 bolts to 48.5-61.5 Foot-Pounds (65.7-83.4 Newton-Meters). Specific torque values for PTO components are not listed separately but refer to these general specifications.
What are the replacement specifications for Fuel injector pump?
The replacement specifications for the fuel injection pump vary by Farmall model. For the Farmall 40, the pump assembly number is BASC 104134-4030. For Farmall 45 and 50, it is BASC 104135-4020 and BASC 104135-3050 respectively. The pump type is In-Line, with an injection pressure of 147 bar (2150 psi).
How do you fix case IH Farmall 40, 45, 50 hydrostatic transmission losing power or overheating under heavy load?
Inspect the transmission cooler fins and clean out any debris. Check the charge pump trochoid rotor side clearance, which must be between 0.02 and 0.03 mm (0.0007 and 0.001 in.) as shown on page 448. Replace the high pressure relief valves if the pressure setting is too low.
How will I receive this Case IH Farmall 40, 45, 50 Repair Manual?
Immediate download of the complete 1414-page searchable Repair Manual. Access it on any device, from a laptop at your desk to a phone in the field.
Are there any print restrictions on this manual?
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.
Does this Case IH Farmall 40, 45, 50 Repair Manual have electrical diagrams?
Yes, full electrical schematics are included with wire colors, connector locations, and circuit descriptions.
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