Case Models 300 Utility Harvester Service Manual (IH-10)

These old Case 300 utility harvesters usually live a hard life—dusty fields, side hills, pulling long days in heat and cold. This service manual’s about helping you trace problems the way a shop tech would, not just guess and throw parts. Say the machine starts losing power under load: you’ll check fuel delivery, verify ignition, inspect the governor, and test compression in a set order so you don’t chase your tail or buy parts you don’t need.

Applications & Use Cases

• Track down a no-start by following the ignition and fuel diagnostics, step by step, so you can isolate if it’s spark, fuel, or compression before you grab the parts catalog.
• Chase weak hydraulics using the manual’s test sequence to verify pump output, check valves, and inspect for internal leaks instead of just swapping the pump.
• Sort out overheating issues by tracing coolant flow, checking the fan and belts, and inspecting the radiator and water pump in the order the book lays out.
• Dial in brakes and clutch using the adjustment procedures so you can align linkages and test pedal travel without trial-and-error.
• Route and tension belts correctly after repairs, so they run true and don’t start howling or walking off pulleys after an hour in the field.

FAQ

Q: Is this a searchable PDF or just page scans?

A: It’s typically a scanned manual, but you can usually search by text; worst case, you’ll use the index and scroll like a paper book.

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

A: Yeah, most folks print the sections they need, stick them in a plastic sleeve, and mark notes on them as they test and check things.

Safety Note

Always block raised headers and relieve hydraulic pressure before you inspect or bleed any lines on this machine.

Case Models 300 Utility 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