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:

    Manual transmission
    Using the Clutch Manual transmission vehicles have a starter interlock that prevents starting the engine unless the clutch pedal is fully pressed. To start the vehicle: 1. Make sure the parking brake is fully set. 2. Press the clutch pedal to the floor, then ...

    Evaporator Core Housing
    Material Item Specification PAG Compressor Oil (R-134a Systems) F7AZ-19589-DA (Motorcraft YN-12-C) WSH-M1C231- B MERPOL NA ESE-M99B144- B Removal NOTE: The evaporator core is not separately serviceable, it is serviced onl ...

    Key Programming - Additional Key With One Programmed Key
    Special Tool(s) Worldwide Diagnostic System (WDS) 418-F224, New Generation STAR (NGS) Tester 418-F052, or equivalent diagnostic tool NOTE: This procedure is used when a customer needs to have an additional key programmed into the veh ...