Your search for an International Harvester 424 shop manual PDF ends here: this 74-page shop manual covers the IH B-275, B-414, 354, 364, 384, 424, 444, 2424, and 2444 tractors, gas and diesel alike. Inside you get factory wiring diagrams, hydraulic lift system schematics with testing and troubleshooting charts, and page after page of exploded views for engine, clutch, transmission, differential, final drive, and power steering overhauls. Carburetor, injection pump timing, governor, brakes, PTO, and steering gear procedures are all here too. Torque the cylinder head bolts to 70-75 ft.-lbs. on the B-275, 75-80 on the diesels, then set clutch pressure springs at 2.68 inches free length, 120-130 lbs compressed to 1.69 inches. These tractors left the dealer network decades ago; forum guesses won't rebuild your injection pump. Bookmarked with a full text layer: search any spec, jump straight to the section, and start wrenching.
What's Inside This International Harvester B, 300, 400 & 2000 Series Manual
| System | Pages | Key Topics |
|---|---|---|
| Front System | 4-5 | Axle Main Member, Steering Knuckles, Tie-Rod, Drag Link and Toe-In |
| Steering Gear | 6-10 | Adjustment, Overhaul |
| Power Steering | 11-19 | Control Valve, Flow Divider Valve, Hand Pump, Relief Valve, Steering Cylinder |
| Engine | 20-26 | Cam Followers, Camshaft and Bearings, Connecting Rods and Bearings, Crankshaft, Cylinder Head, Cylinder Sleeves, Engine Removal, Flywheel, Ignition Timing, Main Bearings, Oil Pump, Pistons and Rings, Piston Pins, Piston Removal, Rear Oil Seal, Rocker Arms, Timing Gear Cover, Timing Gears, Valves and Seats, Valve Guides, Valve Springs |
| Governor (Non-Diesel) | 27-28 | Speed Adjustment, R&R and Overhaul, High Speed Spring, Low Speed Spring |
| Diesel Fuel System | 29-31 | Bleeding, Injection Nozzles, Injection Pump Timing, Quick Checks |
| Governor (Diesel) | 32-35 | Pneumatic, Mechanical |
| Carburetor | 36-36 | Zenith Downdraft Carburetor, Marvel-Schebler Carburetor, Accelerator Pump, Fuel Solenoid Shut-Off Valve, Float Setting |
| Cooling System | 37-38 | Radiator, Thermostat, Water Pump |
| Electrical System | 39-46 | Generator Specifications, Alternator Testing, Starting Motor Specifications, Wiring Diagrams, Distributor Timing |
| Clutch | 47-52 | Adjustment, Remove and Reinstall |
| Transmission | 53-53 | Countershaft, Input Shaft, Reverse Idler, Shifter Rails and Forks, Spline Shaft, Top Cover |
| Reversing Transmission | 54-56 | R&R and Overhaul |
| Differential | 57-57 | Differential Bearing Preload, Mesh Position, Backlash Adjustment, Differential Lock Overhaul, Bull Pinion Shaft Removal |
| Final Drive and Rear Axle | 58-58 | Axle Shaft, Bull Gears, Bull Pinions, Wheel Axle Shaft, Bull Pinion Shafts, Axle Carrier, Axle Shaft Bearing |
| Brakes | 59-59 | Brake Adjustment, Brake Equalization, Brake Housing Removal, Disc Brake Overhaul |
| Power Take-Off | 60-61 | Rear Output Shaft, Countershaft, Front PTO Shaft, Driving Shaft, Driven Gear, Dual Speed Shifter |
| Belt Pulley | 62-66 | Clockwise Rotation Overhaul, Counter-Clockwise Rotation Overhaul, Backlash Adjustment, Pinion Shaft Removal |
| Hydraulic Lift System | 67-74 | Control Valve, Lubrication and Bleeding, Pump, Reservoir and Components, Testing, Troubleshooting |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| B-275 | ||
| Cylinder Head | 70-75 ft.-lbs. | p. 18 |
| All Models | ||
| cylinder head bolt torque | 70-75 ft.-lbs. | p. 18 |
| manifold stud nut torque | 25-30 ft.-lbs. | p. 19 |
| Clutch pressure spring free length | 2.68 inches | p. 49 |
| Clutch pressure spring test load at 1.69 inches compression | 120-130 lbs | p. 49 |
| B-414, 424, 444, 2424, 2444, 354, 364, 384 | ||
| Relief valve pressure | 2300-2400 psi | p. 64 |
| B-275, 354 Diesel | ||
| Cylinder Head Bolt Torque | 75-80 ft-lbs | p. 3 |
| Crankshaft End Play | 0.004-0.008 inch | p. 3 |
| 424, 2424, 444, 2444 Non-Diesel | ||
| Cylinder Head Bolt Torque | 80-90 ft-lbs | p. 3 |
| B-414, 364, 384 Diesel | ||
| Connecting Rod Bolt Torque | 40-45 ft-lbs | p. 3 |
International Harvester B, 300, 400 & 2000 Series Common Problems This Manual Covers
International Harvester B-414 clutch slipping under load, pedal free play gone, smells hot on hills
Adjust pedal free travel first; if the disc still slips, pull the clutch and check the pressure springs. Free length should be 2.68 inches, and each spring must test 120-130 lbs when compressed to 1.69 inches, per page 50. Set release finger height to 1.955 inches from the pressure plate friction face.
Manual Section: Clutch p. 50Three-point hitch lifts slowly, won't hold a mounted plow, drops when engine idles
Check hydraulic oil level and the reservoir filter before condemning the pump. Tee a gauge into the pressure line and stall the lift circuit; relief pressure should read 2300-2400 psi on the B-414, 354, 364, 384, 424, 444, 2424, and 2444, shown on page 65. A low reading points to a worn pump or weak relief valve spring.
Manual Section: Hydraulic Lift System p. 65Diesel engine overheats and loses coolant, oil turns milky after a long day of work
Test cooling system pressure and inspect for a weeping head gasket. Replace the gasket rather than retorquing a leaker, then tighten head bolts in sequence to 70-75 ft.-lbs. on the B-275, following page 19. Pull manifold stud nuts to 25-30 ft.-lbs. and run clean antifreeze; dirty coolant corrodes these blocks from the inside.
Manual Section: Cylinder Head p. 19Deep bottom-end knock under load, gets louder as the engine warms up
Remove the oil pan and inspect the rod bearings before the crank gets scored. Replace bearing inserts in matched sets and torque connecting rod bolts to 40-45 ft.-lbs. on B-414, 364, and 384 diesels, listed on page 3. Plastigage each journal while you are in there and check the oil pickup screen for debris.
Manual Section: Engine p. 3Frequently Asked Questions
What is the torque specification for the cylinder head bolts on an International Harvester B-275 diesel engine?
The cylinder head bolts for the B-275 diesel engine should be tightened to a torque of 70-75 ft.-lbs. p. 3
What is the torque specification for the manifold stud nuts on the B-275, B-414, 354, 364, and 384 diesel engines?
The manifold stud nuts for these diesel engines should be tightened to a torque of 25-30 ft.-lbs. p. 18
What is the recommended valve tappet gap for diesel engines?
The valve tappet gap for all diesel engines should be adjusted to 0.020 inch when the engine is hot. p. 1
What is the hydraulic reservoir capacity for the hydraulic lift system?
The hydraulic lift system reservoir has a capacity of 3.0 gallons. The recommended fluid is IH Hy-Tran fluid. p. 9
What is the correct injection pump timing for the B-275 diesel engine with a pneumatic governor?
The injection pump timing for the B-275 with a pneumatic governor is 20 degrees BTDC. This is measured as 1-1/8 inches on the crankshaft pulley. p. 14
What format is this International Harvester B-275 & variants manual in?
Instant PDF download. You get the full 74-page searchable Shop Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Is this International Harvester B-275 & variants Shop Manual printable?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
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