Oliver Cockshutt 1550 / 160 Series Tractors Parts Catalog (P/N 433 086)

This 347-page PDF reproduces the factory illustrated parts catalog for the Oliver 1550 / 1555 / 2-62 tractor family. Its tables distinguish row crop (RC), industrial (IND), wheatland (WHT), and utility (UTY) configurations, along with Oliver and Cockshutt emblem and decal applications. This catalog is suited to parts-counter staff, restoration shops, and experienced owners who can read serial-specific parts tables; repair methods must come from the matching service literature.

• Catalog identifier 433 086, issued April 14, 1969, with later sheets issued or revised October 1, 1969. The main tractor listings begin at serial number 160 000, with later production breaks shown where parts changed.
• Engine coverage identifies the cylinder head and valves, rocker arms and push rods, crankcase, crankshaft, camshaft, oil pump and filter, manifolds, cooling components, and the related gas, LP-gas, and diesel hardware.
• Powertrain plates break down the transmission, gear-shift linkage, clutch, brakes and controls, differential, Hydra-Power Drive, Creeper Drive, Reverse-O-Torc industrial drive, belt pulley, and single- and dual-speed PTO arrangements.
• Hydraulic content separates Hydra-Lectric-Stop and Depth-Stop systems, internal and external valve layouts, remote-only and draft-control configurations, hydraulic pumps, flow dividers, servo and control valves, power-lift cylinders, couplings, hoses, and oil coolers.
• Chassis coverage differentiates manual and power steering; single- and dual-front-wheel layouts; adjustable, wheatland/industrial, short-wheelbase, and extra-high-clearance front axles; and standard or extra-high-clearance rear axles.
• Body and equipment sections cover wheels and weights, drawbars and three-point hitch, lights and instruments, hood and grille panels, seats and roll bar, cabs and heaters, Weather Break, and Converta Cab equipment.

Assembly and Part Breakdown

The engine group is organized by build and fuel configuration rather than a single generic illustration. Gas pages separate the main tank, one- and two-wheel-guard arrangements, narrow-row-cab auxiliary tanks, carburetor, and governor controls. LP-gas coverage adds the filter, regulator, carburetor, and dedicated governor hardware. Diesel pages break out primary and final filters, the injection pump, injectors and accessory drive, manifold preheater, and the corresponding tank, line, and fitting arrangements. Related oil-bath and dry-type air-cleaner plates are also divided by fuel system and tractor configuration.

Each repair-parts table ties numbered callouts to the factory part number, description, quantity by tractor configuration, and applicable serial range. Alternate part numbers, replacement assemblies, and package breakdowns remain connected to the affected build rather than being presented as one universal list.

Hydraulic listings go further than a single pump drawing. A factory key separates four internal-valve builds: remote-only or draft-control-and-remote, each in Hydra-Lectric-Stop or Depth-Stop form. Separate coverage is provided for the utility layout and the industrial external-valve system. Those distinctions matter when selecting valves, linkage, cylinders, hoses, and power-lift couplings that may look similar off the tractor.

Serial-Specific Parts Selection

Serial identification is used at both tractor and component level. The emblem and decal listing, for example, separates applications through serial 219 999 from those beginning at 220 000. Hydra-Power Drive internals follow the drive unit's own serial number, beginning at 16234, while parts attached to the unit may follow the tractor serial number. Ordering Hydra-Power repair parts from the tractor number alone can therefore lead to a mismatched internal component.

The engine tables also divide piston-ring packages between chrome and non-chrome cylinder sleeves and mark them for use only with the matching sleeve type. Mixing those versions can cause incorrect ring-to-sleeve contact and premature bore wear.

Exploded Views, Indexes, and Scope

Representative exploded-view plates include Cylinder Head and Valves, Hydra-Power Drive, Reverse-O-Torc Drive, Hydra-Lectric-Stop and Depth-Stop Internal Valve System, Power Steering Hydramotor, and Dual-Speed Power Take-Off. A three-page alphabetical index locates assemblies by name, while the 24-page numerical index cross-references factory part numbers back to their catalog pages.

This is an illustrated parts catalog, not a step-by-step repair manual. References to overhaul packages identify cataloged parts, not an overhaul procedure. It does not supply removal sequences, troubleshooting tests, torque tables, valve-clearance data, pressure specifications, fluid capacities, or wiring diagrams. Electrical coverage is limited to parts breakdowns for ignition, starting and charging equipment, lights, instruments, and switches. Use the appropriate service manual for repair procedures and specifications, and securely support heavy frame, axle, and hydraulic assemblies before disassembly.