Section 1-5 · Pages 57–79 (23 pages)

Hydraulic Circuits

From the 1956–1957 GM Controlled Coupling Hydra-Matic Transmission Service Manual

Year
1956, 1957
Make
Cadillac, General Motors, Hudson, Nash, Oldsmobile, Pontiac
Vehicle
Components and Systems, Hydra-Matic, Transmissions
Type
Overhaul & Unit Repair, Service Manual
Models
1956–1957 Cadillac, Oldsmobile (Jetaway), Pontiac (Strato-Flight), Nash and Hudson (Flashaway)
Publication
A-3755
Pages
267

Oil circuit diagrams for each operating condition: neutral with the engine stopped and running, first gear in drive, the 1-2, 2-3 and 3-4 upshifts, part throttle and forced downshifts, third gear in the 3 range, the L range gears, and reverse.

What this section covers

  • Neutral, engine not running and running
  • First gear in drive
  • 1-2, 2-3 and 3-4 upshifts
  • 4-3 part throttle downshift
  • Forced 4-3 and 3-2 downshifts
  • Third gear in drive 3 range and L range
  • Reverse
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