K 3500 Truck 4WD V8-5.7L VIN R (1998)
Band Apply Servo: Service and Repair
4L80-E Automatic Transmission
Reverse Servo Replacement
REMOVAL PROCEDURE
1. Remove the rear servo assembly from the transmission case.
Refer to Rear Servo Assembly Remove/Install as needed.
2. Check the pins. Refer to Low and Reverse Band Servo Pin Check.
3. Disassemble the rear servo accumulator. Refer to Low and Reverse Band Servo Accumulator Assemble.
INSTALLATION PROCEDURE
Refer to the following transmission component locator graphic as needed: Rear Servo Assembly Remove/Install
1. Assemble the rear servo accumulator, if needed. Refer to Low/Reverse Band Servo Accumulator Installation.
2. Install the rear accumulator spring in the case bore.
3. install the following parts:
3.1.
A new gasket
3.2.
The cover
3.3.
The six bolts using a 10-mm socket.
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Tighten the bolts to 24 Nm (18 ft. lbs.).
Forward Servo Replacement
REMOVAL PROCEDURE
1. Remove the following parts:
1.1.
The front servo piston assembly
1.2.
The through
1.3.
The retainer
1.4.
The spring
2. Remove six rear servo bolts using a 10 mm socket.
3. Remove the servo cover and the gasket.
INSPECTION PROCEDURE