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Home >> Jeep >> 2007 >> Commander Base, 4.7 P, AWD >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> 545RFE Automatic Transmission (Service Information) >> 545RFE - Service Information >> Retainer/Bulkhead-4C >> Assembly >> 4C Retainer/Bulkhead

4C Retainer/Bulkhead

NOTE: Clean and inspect all components. Replace any components which show evidence of excessive wear or scoring.
Fig 1: 2nd & 4th Clutches
GC0051668Courtesy of CHRYSLER LLC
1 - 2C PISTON 8 - SNAP-RING
2 - 4C PLATE 9 - RETURN SPRING
3 - 4C DISC 10 - 4C PISTON
4 - 2C BELLEVILLE SPRING 11 - 4C RETAINER/BULKHEAD
5 - SNAP-RING -
6 - SNAP-RING (SELECT) -
7 - REACTION PLATE -
  1. Lubricate all seals with Mopar® ATF +4 prior to installation.
    NOTE: The 4C piston installation aid is only available with procurement of a new 4C piston.
    Fig 2: Installation Aid
    GC0051670Courtesy of CHRYSLER LLC
    1 - INSTALLATION AID
    2 - 4C RETAINER
  2. Insert the installation aid (1) into the 4C retainer/bulkhead (2).
    Fig 3: 4C Piston Installation
    GC0051671Courtesy of CHRYSLER LLC
    1 - INSTALLATION AID
    2 - 4C RETAINER
    3 - 4C PISTON
  3. Lubricate the inner and outer 4C piston seals (3) with MOPAR® ATF+ 4.
  4. Install the 4C piston (3) into the installation aid (1).
    Fig 4: 4C Piston Seated
    GC0051672Courtesy of CHRYSLER LLC
    1 - INSTALLATION AID
    2 - 4C RETAINER
    3 - 4C PISTON
  5. Push the 4C piston (3) down evenly until it is seated in the 4C retainer / bulkhead (2).
    Fig 5: Installation Aide Removal
    GC0051673Courtesy of CHRYSLER LLC
    1 - INSTALLATION AID
    2 - 4C RETAINER
    3 - 4C PISTON
  6. Remove the installation aid (1) from the 4C retainer / bulkhead (2).
    Fig 6: Compressing 4C Piston Return Spring Using Tool 8250
    GC0005267Courtesy of CHRYSLER LLC
    1 - PRESS
    2 - TOOL 8250
  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.
    Fig 7: 2nd & 4th Clutches
    GC0051668Courtesy of CHRYSLER LLC
    1 - 2C PISTON 8 - SNAP-RING
    2 - 4C PLATE 9 - RETURN SPRING
    3 - 4C DISC 10 - 4C PISTON
    4 - 2C BELLEVILLE SPRING 11 - 4C RETAINER/BULKHEAD
    5 - SNAP-RING -
    6 - SNAP-RING (SELECT) -
    7 - REACTION PLATE -
  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.

    The 4C selectable snap ring thickness are as follows:

    4C SELECTABLE SNAP RING THICKNESS

    1. One Butterfly End, One Square End = 1.79 mm (0.070 in.).
    2. Both Ends Buttery Fly Cut = 2.20 mm (0.087 in.).
    3. One Butterfly End, One Inverted Butterfly End = 2.61 mm (0.103 in.).
  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).
    Fig 8: Compressing 2C Belleville Spring Using Tool 8249
    GC0005268Courtesy of CHRYSLER LLC
    1 - PRESS
    2 - TOOL 8249
  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.