Section Two · Pages 15–26 (12 pages)

Checking and Diagnosis

From the 1946–1955 General Motors Hydra-Matic On-the-Car Adjustment Service Manual

The five-step check to make before any Hydra-Matic work: engine condition and idle, fluid level on the dipstick, accelerator, throttle and selector linkage, oil pressures on a road test with gauge J 5907, and oil leakage, with a chart of leak points and causes. A coded diagnosis guide then links shift complaints, slipping, no drive and reverse faults to causes, and a noise chart identifies the pump or planetary unit at fault.

Read this section free, starting at page 15

What this section covers

  • Engine check
  • Hydra-Matic fluid level check
  • Linkage check
  • Oil pressure check with gauge J 5907
  • Oil leak points and causes
  • Hydra-Matic diagnosis guide and cause codes
  • Noise diagnosis
Year
1946, 1947, 1948, 1949, 1950, 1951, 1952, 1953, 1954, 1955
Make
Cadillac, Chevrolet, General Motors, GMC, Hudson, Kaiser, Lincoln, Nash, Oldsmobile, Pontiac, Willys
Vehicle
Components and Systems, Hydra-Matic, Light Duty Trucks, Passenger Cars, Transmissions, Trucks
Type
Service Manual
Models
Hydra-Matic transmissions 1946–1955; Chevrolet and GMC 1/2–1 ton trucks
Publication
J 6372
Pages
76

What’s inside

Manual

  1. Contents and ForewordCover, table of contents with ordering details for manual J 6372, and a foreword explaining that the procedures use Kent-Moore special tools and cover about 75% of Hydra-Matic service.pp. 1–4
  2. OneFundamentals of Operationpp. 5–14
  3. TwoChecking and Diagnosispp. 15–26
  4. ThreeOn-the-Car Service and Adjustment Instructionspp. 27–68
  5. FourReference Chartspp. 69–76

Other manuals for this vehicle