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2-4 SERVO Chevrolet Chevy Express H2500

Automatic Transmission Servicing (4l60-e) 3 illustrations ~307 words

2-4 SERVO

Note. Tools required: Servo Cover Depressor (J-29714-A).

  1. Raise and support the vehicle. Remove the 2 heat shield retaining bolts and the heat shield from the transmission. Remove the oil pan bolt below and to the left of the 2-4 servo cover. Install the servo cover depressor to the oil pan rail. Tighten the bolt on the servo cover depressor in order to compress the servo cover. (Scheme 141)
  2. Remove the servo cover retaining ring. (Scheme 142) Loosen the bolt on the servo cover depressor to release tension on the servo cover. Remove the servo cover and "O" ring seal. If the cover is hung up on the seal, use a pick (2) to pull and stretch the seal (1) out of the groove. Cut and remove the "O" ring seal before removing the cover. (Scheme 143)
  3. Remove the 2-4 servo assembly from the transmission. Inspect the 4th apply piston, the 2-4 servo converter, 2nd apply piston and the piston inner housing for cracks, scoring, burrs and nicks.

Scheme 141

Scheme 141
Scheme 141

Scheme 142

Scheme 142
Scheme 142

Scheme 143

Scheme 143
Scheme 143
  1. Install the new seals on the pistons and the servo cover. Lubricate the seals with clean transmission fluid. Install the 2-4 servo assembly into the 2-4 servo bore. Install the servo cover and "O" ring seal.
  2. Install the servo cover depressor. (Scheme 141) Tighten the bolt on the servo cover depressor in order to compress the servo cover. Install the servo cover retaining ring. Remove the servo cover depressor from the oil pan flange.
  3. Install the oil pan bolt. Tighten the oil pan bolt to specification. See «TORQUE SPECIFICATIONS»(/chevrolet/chevy-express-h2500/2003-2003/remont/automatic-trans/#automatic-transmission-servicing-4l60-e__torque-specifications). Install the 2 heat shield retaining bolts and the heat shield from the transmission. Tighten the bolts to specification. See «TORQUE SPECIFICATIONS»(/chevrolet/chevy-express-h2500/2003-2003/remont/automatic-trans/#automatic-transmission-servicing-4l60-e__torque-specifications). Lower the vehicle. Fill transmission with appropriate fluid to proper level. See «RECOMMENDED FLUIDS»(/chevrolet/chevy-express-h2500/2003-2003/remont/automatic-trans/#automatic-transmission-servicing-4l60-e__recommended-fluids) and «FLUID CAPACITIES»(/chevrolet/chevy-express-h2500/2003-2003/remont/automatic-trans/#automatic-transmission-servicing-4l60-e__fluid-capacities) under LUBRICATION.