Toyota
Jeep Cherokee
 Service Manual
Transmission and transfer case » AW-4 automatic transmission » Description and operation
Hydraulic system

DESCRIPTION

The hydraulic system consists of the pump, valve body and solenoids, and four hydraulic accumulators.

The oil pump provides lubrication and operating pressure.

The valve body controls application of the clutches, brakes, second coast band, and the converter clutch.

The valve body solenoids control sequencing of the 1-2, 2-3 and 3-4 shift valves. The solenoids are activated by signals from the transmission control module.

The accumulators are used in the clutch and brake feed circuits to control initial apply pressure. Spring loaded accumulator pistons modulate the initial surge of apply pressure for smooth engagement.

    More about «Description and operation»:

    AW-4 automatic transmission

    Fluid

    Torque converter

    Oil pump

    Transmission valve body components

    Pistons

    Transmission ranges and shift lever positions

    Transmission control module (TCM)

    Hydraulic system

    Transmission cooler

    Brake transmission shift interlock mechanism

    Jeep Cherokee Service Manual / Transmission and transfer case / AW-4 automatic transmission / Description and operation / Hydraulic system

    Jeep Cherokee Service Manual

    Categories


    © 2017-2022 Copyright www.jcherokee.com