Hydraulic System, Brakes

Hydraulic System

Fluid Pump
For component location, refer to Disassembled Views.
^ The fluid pump provides the fluid pressure necessary to charge the torque converter, main control assembly, transmission cooling system, lubrication system and apply devices.
^ The fluid pump is a positive displacement, gear type pump.
- The fluid pump is driven by the torque converter impeller hub.

Filter
For component location, refer to Disassembled Views.
^ All fluid drawn from the transmission fluid pan by the fluid pump passes through the fluid filter.
^ The transmission fluid filter and its accompanying seals are part of the fluid path from the sump (pan) to the fluid pump.
- The transmission fluid filter has a bypass section which allows fluid vented at the main regulator valve to be recirculated to the fluid pump, without passing through the transmission fluid filter.

Main Control
For component location, refer to Disassembled Views.
^ The main control assembly and related components are part of the pressure side of the hydraulic system.
^ The main control assembly consists of the solenoids, the valve body assembly and the separator plate.
^ These components combine to convert electrical signals into hydraulic actions.
- All valves in the main control assembly are anodized aluminum and cannot be sanded, filed, or dressed in any other way. If there is any damage to the valves that prevents or restricts their movement, install a new main control assembly.