2007 Commander XK Factory Service Manual 21 - TRANSMISSION AND TRANSFER CASE

RETAINER/BULKHEAD-4C

DISASSEMBLY






1. Remove the 2C piston Belleville spring snap-ring (5) from the 4C retainer/bulkhead (12).
2. Remove the 2C piston Belleville spring (4) from the retainer/bulkhead (11).
3. Remove the 2C piston (1) from the retainer/bulkhead (11). Use 20 psi of air pressure to remove the piston if necessary.
4. Remove the 4C clutch snap-ring (6) from the retainer/bulkhead (11)
5. Remove the 4C clutch pack (2, 3, 7) from the retainer/bulkhead (11).



6. Using Spring Compressor 8250 (2) and a suitable shop press (1), compress the 4C piston return spring and remove the snap-ring.





7. Remove the 4C piston return spring (10) and piston (11) from the retainer/bulkhead (12). Use 20 psi of air pressure to remove the piston if necessary.

ASSEMBLY

NOTE: Clean and inspect all components. Replace any components which show evidence of excessive wear or scoring.






1. Lubricate all seals with MoparĀ® ATF +4 prior to installation.



2. Insert the installation aid (1) into the 4C retainer / bulkhead (2) .



3. Lubricate the inner and outer 4C piston seals (3) with MOPARĀ® ATF+ 4.
4. Install the 4C piston (3) into the installation aid (1) .



5. Push the 4C piston (3 ) down evenly until it is seated in the 4C retainer / bulkhead (2).



6. Remove the installation aid (1) from the 4C retainer / bulkhead (2).



7. Position the 4C piston return spring onto the 4C piston .
8. Using Spring Compressor 8250 (2) and a suitable shop press (1), compress the 4C piston return spring and install the snap-ring.





9. Assemble and install the 4C clutch pack (2, 3) into the retainer/bulkhead (11) with a steel separator plate against the piston.
10. Install the 4C reaction plate (7) and snap-ring (6) into the retainer/bulkhead (11) . The 4C reaction plate is non-directional.
11. Measure the 4C clutch clearance. The correct clutch clearance is 0.770-1.390 mm (0.030-0.055 in.). The snap-ring (6) is selectable. Install the chosen snap-ring and re-measure to verify the selection.
12. Install the 2C piston (1) into the retainer/bulkhead (11).
13. Position the 2C Belleville spring (5) onto the 2C piston (2).
14. Position the 2C Belleville spring snap-ring (6) onto the 2C Belleville spring (5).



15. Using Spring Compressor 8249 (2) and a suitable shop press (1), compress the Belleville spring until the snap-ring is engaged with the snap-ring groove in the retainer/bulkhead.