Case Models 400 Harvester Service Manual (IH-10)

These old Case 400 harvesters usually live in dust, chaff, and mud, running long days when the crop’s ready and you can’t afford downtime. This service manual helps you trace faults step by step, so you don’t just throw parts at a problem. Say the engine starts hunting under load: with this book, you’d work through fuel, governor, and linkage checks in order, verify what’s actually out of spec, then fix the right thing the first time.

Applications & Use Cases

• Track down a no-start by tracing ignition or diesel fuel circuits in sequence, instead of guessing at coils, pumps, or switches.
• Diagnose overheating by checking fan drive, radiator flow, and water pump issues in a set order so you don’t miss a simple blockage.
• Isolate brake problems by inspecting linkages, adjusting clearances, and testing for hydraulic or mechanical drag before replacing shoes or cylinders.
• Route and align belts and pulleys correctly after a teardown, then test tension so they run true and don’t shred mid-season.
• Bleed fuel or cooling systems properly after repairs, verifying you’ve got no trapped air that’ll leave you stranded in the field.

FAQ

Q: Is this a scanned manual, and can I search it on my computer?

A: It’s typically a scanned PDF; most versions are searchable, but older scans may have a few fuzzy pages you’ll need to eyeball.

Q: Can I print pages to take out to the machine?

A: Yes, and that’s usually what I’d do—print the section you’re working on so you can smear grease on it without worrying about your phone or laptop.

Safety Note

Always block headers and raised components securely before you crawl under anything to inspect or test it.

Case Models 400 Harvester Index:

BELT PULLEY

BRAKES

CARBURETOR (Not LP-Gas)

CARBURETOR (LP-Gas)

CLUTCH, ENGINE

COOLING SYSTEM
Fan
Radiator
Water Pump

DIESEL FUEL SYSTEM
Air Restriction Valve
Energy Cells
Filters and Bleeding
Injection Pump
Nozzles
Precombustion Chambers
Quick Checks
Trouble Shooting

DIFFERENTIAL

ENGINE
Cam Followers
Camshaft
Connecting Rods and Bearings
Crankshaft
Cylinder Head
Engine Removal
Flywheel
Ignition Timing
Injection 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 and Springs
Valve Timing

FINAL DRIVE
Axle Shafts
Bull Gears
Bull Pinions

FRONT SYSTEM
Axle Main Member
Steering Knuckles
Tie Rods and Drag Link
Tricycle Type

GOVERNOR

HYDRAULIC SYSTEM
Control Valves
Lubrication
Pump
Regulator and Safety Valve
Testing
Trouble Shooting

POWER STEERING SYSTEM
Cylinder
Flow Control and Relief Valve
Lubrication and Bleeding
Motor
Pump
Steering Gear
Steering Valves

PTO (Non-Continuous)

PTO (Independent Type)
Drive Shaft
Driven Shaft
Extension Shaft
Overhaul Rear Unit
Reactor Bands

REAR AXLE

STEERING GEAR (Manual)

TORQUE AMPLIFIER
Clutch Adjustment
Clutch Overhaul
Planetary Unit

TRANSMISSION OVERHAUL

Develon