Ford Mustang (1999-2004) Service Manual: Hydraulic System

Hydraulic System

 

Hydraulic System

Fluid Pump

Fluid Pump

 

Fluid Pump

Fluid Pump

The transmission uses a gerotor-type design front pump support and gear. The pump provides the volume of fluid needed to charge the torque converter, main control assembly, cooling system and lube system. Pump pressure is regulated by the main regulator valve. The pump has an internal boost circuit which is more efficient at lower engine speeds.

Filter

All fluid drawn from the transmission pan by the pump passes through the filter. The filter and its accompanying seal are part of the fluid path from the sump (pan) to the fluid pump.

Main Control

Main Control

 

Main Control

The main control valve body houses three electronic solenoids:

  • two shift solenoids
  • one torque converter clutch solenoid (TCC solenoid)

Accumulators

Accumulators

 

Accumulators

The transmission uses two accumulators:

  • 1-2 Accumulator - The 1-2 accumulator is used to soften the 1-2 shift by absorbing some of the pressure directed to the intermediate clutch. Constant line pressure is applied to the middle section of the 1-2 accumulator piston, opposing the intermediate clutch pressure, until the pressure is high enough to overcome line pressure. The top of the piston is exhausted to the sump.
  • 2-3 Accumulator - The 2-3 accumulator is used to soften the 2-3 shift by absorbing some of the direct clutch pressure. Forward clutch pressure is applied to the top side of the 2-3 accumulator piston, holding the piston down until clutch pressure is high enough to overcome it.

    The middle section of the piston is exhausted to the sump.

    Apply Components
    There are eight apply components used to drive or hold the planetary gearset components. Band-Overdrive   1. The overdrive band holds the reverse clutch drum stationary in fourth gear an ...

    Transmission Electronic Control System
    The powertrain control module (PCM) and its input/output network control the following transmission operations: Shift timing Line pressure (shift feel) Torque converter clutch Th ...

    Other materials:

    Installation
    CAUTION: The upper suspension arm and bushing nuts must be tightened with the suspension at curb height. Failure to do so can result in bushing failure, resulting in poor ride and handling. NOTE: If installing a new upper suspension arm and bushing, mark the ...

    Installation
    Convertible 1. For installation of the back window glass, refer to Section. Coupe CAUTION: After installing the urethane installed back window glass, the vehicle should not be driven until the urethane adhesive has cured. The curing time at tempe ...

    Installation
    1. Apply silicone gasket and sealant in the locations shown. 2. Install the engine front cover.   3. Install the belt idler pulleys and the bolts. 4. Connect the CMP sensor electrical connector. 5. Raise the vehicle. 6. Install the crankshaft fr ...