Part of the Case IH Repair Manuals.
The hitch will not lift a loaded implement, or you select forward and the tractor just sits there. This is the Case IH service manual for those days on the Farmall 110A, 120A, 125A and 140A. It is part number 47377791, 1st edition, November 2012.
It covers the clutch, the 8x8 and 16x8 Power Shuttle and mechanical transmissions, 4WD, both front axles, and the rear axle and final drives. It also covers the PTO, brakes, hydraulics, steering, cab A/C and wiring schematic frames. The engine chapter covers removal and installation only.
When you are alone in the shed with a split tractor and nobody to call, you work from these pressure tables and torque figures.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction, Safety and Standard Torques | 1-29 | Contents, Ecology and Environment, International Symbols, Personal Safety and Safety Rules, Minimum Tightening Torques for Normal Assembly, Standard Torque Data for Hydraulics, Shop and Assembly Instructions, Biodiesel Fuels, General Welding |
| Engine Removal and Installation | 30-47 | Engine and Crankcase: Engine Removal and Installation Procedures, Tractor Split Between Engine and Transmission |
| Clutch and Damper Plate | 48-69 | Clutch General Specification and Torque, Overview, Pedal Free Travel Adjustment, Clutch Removal, Disassembly, Inspection and Installation, PTO Drive Disc Bearing, Clutch Troubleshooting, Viscous or Flexible Coupling Damper Plate |
| 8x8 Power Shuttle Transmission | 70-152 | Static Description and Sectional View, Forward and Reverse Clutches, Control Valve, Shift Cover, Shift Forks and Rails, Transmission Disassembly and Assembly, Clutch Pack, Power Shuttle Pressure Test, Troubleshooting |
| 16x8 Power Shuttle Transmission (Hi-Lo) | 153-232 | Static Description of the 16x8 Power Shuttle Transmission, Sectional View, Hi-Lo and Forward/Reverse Clutch Packs, Control Valve, Shift Cover, Shift Forks and Rails, Side Mounted Shift Mechanism for ROPS and Cab Tractors |
| Mechanical Transmission and Shuttle Controls | 233-283 | Mechanical Transmission Description, Removal, Overhaul and Installation, Power Shuttle Transmission External Controls Adjustment |
| Four-Wheel Drive (4WD) System | 284-309 | Electrohydraulic Front-Wheel Drive Clutch Control, 4WD Gearbox (Transfer Case) Torque, Gear Ratios, Removal and Overhaul |
| Front Axle - CNH Heavy Duty (125A, 140A) | 310-357 | Powered Front Axle General Specification and Power Flow, Gear Ratios, Ring and Pinion Backlash and Shims, Front Bevel Gear Set and Differential Overhaul, Final Drive Hubs, Steering Knuckles and Shafts |
| Front Axle (110A, 120A) | 358-411 | Powered Front Axle Specification and Torque, Front Axle Removal, Differential General Specification and Overhaul, Planetary Drive and Hub, Axle Shaft, Steering Knuckle and King Pin |
| Rear Axle, Differential and Final Drives | 412-465 | Powered Rear Axle General Specification and Torque by Model, Rear Axle Troubleshooting, Rear Bevel Gear Set and Differential, Differential Lock, Planetary Final Drives |
| Power Take-Off (PTO) | 466-513 | One-Speed Rear PTO Gear Service, Two-Speed Rear PTO General Specification, Pressure Regulating and Relief Valve Settings, Driven Shaft, PTO Clutch Removal, Disassembly and Assembly |
| Parking Brake and Hydraulic Service Brakes | 514-553 | Parking Brake Description and Adjustment, Hydraulic Service Brakes Specification and Torque, Brake Master Cylinder, Brake Lines, Bleeding, Adjustment and Test, Brake Pedals, Slave Cylinder, Brake Troubleshooting |
| Hydraulic Systems and Hydraulic Schematics | 554-600 | Hydraulic Oil Capacity and Type, Torque, Special Tools, Hydraulic Standard and Symbols, Hydraulic Schematic Frames 01-10 for Mechanical Shuttle, 8x8 and 16x8 Power Shuttle, Remote Valves and Tandem Pump |
| Priority Valve, Auxiliary Pump and Hitch Valve | 601-662 | Pump Control Valves Dynamic Description, Priority/Regulator Valve Overhaul, Optional Engine-Mounted Auxiliary Hydraulic Pump Specification, Flow Test and Overhaul, Three-Point Hitch Control Valve, Three-Point Hitch Cylinder |
| Remote Control Valves and Tandem Pump | 663-735 | Remote Control Valves and Couplers, Remote Valve Pressure Test and Troubleshooting, Tandem Gear Pump General Specification, Main Pump and Steering Pump Pressure and Flow Tests, Low Pressure and Lubrication Circuit Tests |
| Rear Three-Point Hitch | 736-779 | Rear Three-Point Hitch Torque, Dynamic Description, Adjustments, Control Linkage Rod and Roller Setting, Hitch Troubleshooting |
| Steering | 780-815 | Steering Column, Hydraulic Control Components Troubleshooting, Power Steering Pump, Steering Cylinders |
| Cab Ventilation and Air Conditioning | 816-883 | Ventilation, Air Conditioning General Specification, Decontaminating, Evacuate and Recharging, A/C Compressor, Condenser and Receiver/Dryer Replacement |
| Electrical System, Instruments and Fuses | 884-904 | Electrical Components General Specification by Model, Instrument Panel Component Identification, Control Locations, Fuse and Relay Locations, Instrument Cluster Replacement |
| Wiring Schematic Frames | 905-990 | Harnesses and Connectors: Electrical Schematic Frames 01-16 for Tractors Without Cab and Frames 01-24 for Cab Tractors, With Component Identifier Lists |
| Starting, Charging, Battery and Cab Controls | 991-1040 | Engine Starter Specification and Torque, Alternator Tests Including Charging Current and Controlled Voltage, Battery Testing, Cab Controls Removal and Installation |
| Cab, Doors, Special Tools and Electrical Schematic | 1041-1089 | Cab and Platform Removal and Installation, Cab Doors, Rear Window, Handle and Lock, Special Tool Index, Fold-Out Electrical Schematic 47453450 for Farmall 110A, 120A, 125A and 140A Tractors with Cab |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Clutch disc (8x8 mechanical shuttle) | dry disc, 330 mm (13 in) | p. 51 |
| Clutch pedal free play | 28 - 41 mm (1.102 - 1.614 in) | p. 51 |
| Power Shuttle main low pressure | 1500 - 1800 kPa (218 - 261 psi) | p. 143 |
| Power Shuttle lubrication pressure | 300 - 500 kPa (44 - 73 psi) | p. 143 |
| Hydraulic oil maximum capacity (includes filter) | 66 l (17.4 US gal) | p. 557 |
| Hydraulic oil | CASE IH AKCELA NEXPLORE™ FLUID, MAT 3525 | p. 557 |
| Rear axle oil capacity | 60.0 l (15.9 US gal) | p. 415 |
| Main hydraulic pump flow at 2200 RPM (new pump) | 49 l/min (13 US gpm) | p. 707 |
| System relief valve activation | 176 - 182 bar (2552 - 2639 psi) | p. 707 |
| Steering pump flow at 2200 RPM (new pump) | 27 l/min (7 US gpm) | p. 707 |
| PTO pressure regulating valve @ 2100 RPM | 1172 - 1379 kPa (170 - 200 psi) | p. 477 |
| Rear disc to hub nuts (manual adjust wheels) | 244 - 298 N·m (180 - 220 lb ft) | p. 415 |
| Rear disc to rim nuts (manual adjust wheels) | 280 - 340 N·m (207 - 251 lb ft) | p. 415 |
| Rear axle drawbar | 4309.0 kg (9499.7 lb) (Farmall 110A, Farmall 120A) / 5300.0 kg (11684.5 lb) (Farmall 125A, Farmall 140A) | p. 415 |
| Brake discs per side | 3 (Farmall 110A, Farmall 120A) / 4 (Farmall 125A, Farmall 140A) | p. 528 |
| Alternator | 14 V 65 A 910 W (Farmall 110A, Farmall 120A) / 14 V 120 A 1680 W (Farmall 125A, Farmall 140A) | p. 887 |
| Starter | Iskra gear starter 3 kW | p. 993 |
