1966 Oliver 1550 / Cockshutt 1550 Tractor Shop Manual

1966 Oliver and Cockshutt 1550 Tractor Technical Documentation

• Covers 1966 Oliver 1550 and Cockshutt 1550 tractor series with gasoline, LP gas, and diesel engine configurations.
• Official factory publication Form No. 432 512, issued 8-8-66.
• Features 38 detailed exploded-view diagrams covering engine, fuel, ignition, and Hydra-Power drive components.
• No shipping wait — the PDF is available immediately after purchase.
• Stored against your account so you can retrieve it after a hard-drive loss.
• Indexed PDF search covers every chapter and appendix.
• This 1966 original edition provides the specific calibration data and clearance tolerances required for the 1550 series engine and transmission build.

Document Scope and Technical Content

This factory manual provides technical specifications and service procedures for the 1550 series tractor engines and the Hydra-Power drive transmission. The documentation includes chapters dedicated to engine maintenance, including cylinder head and valve specifications, timing gear arrangements, and oil system diagrams. Fuel system coverage is segmented by fuel type, providing adjustment parameters for Marvel-Schebler and Ensign carburetors, alongside fuel injection pump service data for diesel units. Detailed sections are also provided for the air intake system and distributor-based ignition system maintenance.

Engine and Transmission Specifications

Technical data previews include critical clearance charts, torque values for main bearings and cylinder head cap screws, and lubrication circuit pressure specifications. Cooling system capacity is documented at 16 to 18 quarts depending on cabin heater configuration. Spark plug gap is specified at 0.025 in across all gasoline and LP models. Operating coolant temperature range is maintained between 180–200°F. The Hydra-Power drive system contains pressure regulating data with a maximum circuit pressure documented at 190 psi. Engine Serial Number location is identified on the right side of the crankcase on the alternator mounting flange. A certified 298-page OEM workshop manual covering the 1966 Oliver and Cockshutt 1550 tractor, documenting engine, fuel, ignition, and Hydra-Power drive specifications for the factory build.

Note: This page is a contents overview for the manual. It does not provide repair or diagnostic instructions.