Grand Cherokee 2WD V8-4.7L VIN J (2004)
15. Using Spring Compressor 8251, compress the UD/OD balance piston and remove the snap-ring from the input clutch hub (Fig. 71).
16. Remove the UD/OD balance piston and piston return spring from the input clutch retainer (Fig. 72).
17. Remove the underdrive piston from the input clutch retainer (Fig. 72).
NOTE: Both the UD/OD balance piston and the underdrive piston have seals molded onto them. If the seal is damaged, do not attempt to install a
new seal onto the piston. The piston/seal must be replaced as an assembly.
18. Remove the input clutch retainer tapered snap-ring.
19. Separate input clutch retainer from input clutch hub.
20. Separate OD/reverse piston from input clutch hub retainer (Fig. 72).
21. Remove all seals and O-rings from the input shaft and input hub. The O-rings on the input hub are color coded. Be sure to make note of which
O-ring belongs in which location.
ASSEMBLY
1. Install all new seals and O-rings onto the input shaft and input hub. The O-rings on the input hub are color coded. Be sure to install the correct
O-ring in the correct location.
2. Check the transmission lubrication check valve located in the input shaft using shop air. The valve should only allow air flow in one direction. If
the valve allows no air flow, or air flow in both directions, the valve will need to be replaced.
3. Lubricate all seals with Mopar ATF +4, type 9602, prior to installation.
