Pages 111–121 (11 pages)

4-Speed: Power Flow, Pump, Governor and Control Valves

From the 1961 Pontiac Hydra-Matic Manual (3-Speed and 4-Speed)

Year
1961
Make
Pontiac
Vehicle
Components and Systems, Hydra-Matic, Passenger Cars, Transmissions
Type
Overhaul & Unit Repair, Service Manual
Models
1961 Pontiac; 3-speed P-61, PE-61, PA-61, PB-61; 4-speed PS-61, PES-61, PAS-61, PBS-61
Pages
210

Power flow through the 4-speed transmission and an overview of its hydraulic action, followed by the front pump, governor and control valves. The 4-speed uses front and rear sprag clutches, a neutral clutch, an overrun clutch and a Lo band, with a reverse cone clutch for reverse.

What this section covers

  • Power flow
  • Hydraulic action overview
  • Front pump operation
  • Governor
  • Control valves
Read from page 111
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