Hydraulic System, Brakes

Fluid Pump











- The fluid pump provides the fluid pressure required to charge the torque converter, main control assembly, transmission cooling system, lubrication system and apply devices.
- The fluid pump is a positive displacement, gear and crescent-type pump.
- The fluid pump is driven by the torque converter cover hub.
- 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.





Filter

Main Control

















- The main control valve body and related components are part of the pressure side of the hydraulic system.
- The main control valve body cons1sts 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. Any damage to the valves that prevents or restricts their movement, requires replacement of the entire main control valve body.