Section 4 · Pages 109–136 (28 pages)

Oldsmobile Parts Listings

From the 1940–1956 GM Hydra-Matic Transmission Parts Catalog (1956 Edition)

Oldsmobile Hydra-Matic parts by Group 4 number from 1940 to 1956. Two 1956 transmissions are listed: Model R-56, similar to 1955, used on the 88, and the new Jetaway Model O-56 used on Super 88 and 98. Groups include front servo valves and pistons, rear servo, oil pipes, speedometer gears and rear bearing parts, with serial number breaks.

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What this section covers

  • Model R-56 and Jetaway O-56
  • Front servo and 4-3 downshift valve
  • Rear servo and accumulator
  • Oil pipes
  • Speedometer drive and driven gears
Year
1940, 1941, 1942, 1946, 1947, 1948, 1949, 1950, 1951, 1952, 1953, 1954, 1955, 1956
Make
Cadillac, Chevrolet, General Motors, GMC, Oldsmobile, Pontiac
Vehicle
Components and Systems, Hydra-Matic, Light Duty Trucks, Medium Duty Trucks, Passenger Cars, Transmissions, Trucks
Type
Parts Catalog
Models
Cadillac, Oldsmobile, Pontiac cars; Chevrolet 1/2–1 1/2 ton and GMC 100–500 series trucks
Publication
Bulletin 37A-100 (A-3700)
Pages
202

What’s inside

Contents

  1. Cover and Title PageCover and title page of the 1956 edition Hydra-Matic Transmission Parts Catalog for Cadillac, Chevrolet truck, Oldsmobile, Pontiac and GMC truck, with Bulletin 37A-100 dated 8-1-1956 and the tab index of catalog sections.pp. 1–3
  2. Part Number Conversion Listpp. 4–11
  3. Introduction and Model Identification GuideExplains how the catalog is arranged and how to find a part from an illustration group number, then a model identification guide listing every Hydra-Matic model code by year from 1940 to 1956, from 40-O Oldsmobile to the 1956 Cadillac, Jetaway, Stratoflight, Nash, Hudson, Rambler and GMC truck units.pp. 12–14
  4. Overhaul and Service Repair Kitspp. 15–23
  5. Cadillac Illustrationspp. 24–45
  6. 20Cadillac Parts Listingspp. 46–78
  7. Chevrolet, Oldsmobile and Pontiac Illustrationspp. 79–98
  8. 4Chevrolet Truck Parts Listingspp. 99–108
  9. 4Oldsmobile Parts Listingspp. 109–136
  10. GMC Truck Illustrationspp. 137–150
  11. 17GMC Truck Parts Listingspp. 151–184
  12. 4Pontiac Parts Listingspp. 185–202

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