1955-1974 Oliver OC-4 crawler tractor parts manual

Product Information

Table of Contents

1. Introduction

• Machine components
• General information

2. Safety precautions

• General safety rules
• Handling of fuel

3. Specifications

• Engine
  • Displacement
  • Bore
  • Piston stroke
  • Power output
• Fuel system
  • Carburetor
  • Air filter
  • Tank vent
• Ignition system
  • Spark plug
• Gearbox
• Cutting attachment
• Special accessories
  • For the user
  • For service
• Tightening torques

4. Clutch

• Disassembly
• Installation

5. Engine

• Muffler / spark arresting screen
• Leakage testing
  • Preparations
  • Pressure test
  • Vacuum test
• Oil seals
• Exposing the cylinder / spacer flange
• Cylinder and piston
  • Removal
  • Installation
• Piston rings
• Crankcase
  • Removing the crankshaft
  • Installing the crankshaft

6. Ignition system

• Spark plug terminal
• Ignition module
  • Ignition timing
  • Removal and installation
• Flywheel

7. Rewind starter

• General
• Starter cover
• Rewind spring
  • Replacement
  • Tensioning
• Starter rope (ElastoStart)
• Starter grip (ElastoStart)
• Starter carrier/pawl

8. Throttle control

• Throttle trigger/interlock lever (throttle cable with one short-circuit wire)
• Throttle cable with one short-circuit wire
• Contact spring/detent spring in control handle (throttle cable with one short-circuit wire)
• Throttle trigger/interlock lever (throttle cable with two short-circuit wires)
• Throttle cable with two short-circuit wires
• Adjusting the throttle cable

9. Fuel system

• Air filter
• Carburetor
  • Leakage testing
  • Removal and installation
  • Adjustment (two adjusting screws)
  • Adjustment (one adjusting screw)
• Tank vent
• Pickup body
• Fuel tank/hoses

10. AV system

• Repair

11. Shaft

• Cowhorn handle
• Looped handle
• Drive shaft/insulating tube
• Protective tube

12. Cutting tool drive

• Bearing housing (FS 75)
• Gearbox (FS 80, 85)
• Gearbox (FC 75)
• Clutch drum

13. Cutting device (HL 75)

• Gearbox
• Cutting blade
• Gear wheel

14. Special service tools and aids

• Special tools
• Servicing aids

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