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Home >> Jeep >> 2021 >> Grand Cherokee Trackhawk >> Repair and Diagnosis >> Body & Frame >> Frames, Subframes & Crossmembers >> Frame And Bumpers >> Frame >> CROSSMEMBER, Rear >> Installation
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CROSSMEMBER, Rear: Installation

GC0080379Courtesy of CHRYSLER GROUP, LLC
  1. Raise the crossmember (1) to the body mounting points. As the crossmember is raised, align the shocks with pockets in spring links. Do not install the bolts at this time. 
    GC0146229Courtesy of CHRYSLER GROUP, LLC
  2. Continue to raise the crossmember (1) with the jack until the crossmember is close to the marks previously made on the body.
    GC0079773Courtesy of CHRYSLER GROUP, LLC
  3. Shift the crossmember as necessary to line up the mounts (3) with the location marks (2) drawn on the body (1) before removal.
    GC0146229Courtesy of CHRYSLER GROUP, LLC
  4. Continue to raise the crossmember (1) with the jack until the crossmember mounting bolts (2) can be installed.
  5. Install the left side crossmember mounting bolts, but not the right side bolts. It is not necessary to tighten the bolts at this point.
    GC0095728Courtesy of CHRYSLER GROUP, LLC
    CAUTION:

    To avoid damaging other components of vehicle, do not lower crossmember any further than necessary to install coil spring (2).

  6. Slowly  lower the jack allowing right side of the crossmember (4) to drop. Do not lower jack at a fast rate.  Lower jack just enough to allow for the coil spring (2) installation. Do not lower jack any further than necessary. 
    NOTE:

    Before installing coil spring, be certain the isolators (1 and 5) are completely installed on the ends of the coil spring (2).

  7. Install the coil spring (2) with the isolators (1 and 5) into the spring pocket of the spring link, fitting the lower isolator to the shape of the pocket, then align top of spring with the body mount.
    GC0145856Courtesy of CHRYSLER GROUP, LLC
  8. Carefully raise the jack, guiding the coil spring and lower end of shock absorber (1) into the mounted positions. Once the shock absorber (1) lower mounting hole lines up with the hole in the control arm, stop jacking.
  9. Install the lower shock clevis bolt/nut (3).
  10. Raise the support, on the lower control arm, to normal ride height and tighten the lower shock clevis bolt/nut (3) to the proper specifications. Refer to TORQUE SPECIFICATIONS  .
    GC0146229Courtesy of CHRYSLER GROUP, LLC
  11. Raise the right side of the crossmember (1) into mounted position. Install right side crossmember mounting bolts (2). Snug, but do not fully tighten bolts at this time. 
  12. Remove both front and rear crossmember mounting bolts (2) on the left  side of vehicle.
    GC0095728Courtesy of CHRYSLER GROUP, LLC
    CAUTION:

    To avoid damaging other components of vehicle, do not lower crossmember any further than necessary to install coil spring (2).

  13. Slowly  lower the jack, allowing the left side of the crossmember (4) to drop. Do not lower jack at a fast rate.  Lower the jack just enough to allow the coil spring (2) installation. Do not lower jack any further than necessary. 
    NOTE:

    Before installing coil spring, be certain the isolators (1 and 5) are completely installed on ends of the coil spring (2).

  14. Install coil spring (2) with the isolators (1 and 5) into the spring pocket of the spring link, fitting the lower isolator to the shape of the pocket, then align top of spring with the body mount.
    GC0145856Courtesy of CHRYSLER GROUP, LLC
  15. Carefully raise the jack, guiding the coil spring and lower end of the shock absorber (1) into mounted positions. Once the shock absorber (1) lower mounting hole lines up with hole in the control arm, stop jacking.
  16. Install the lower shock clevis bolt/nut (3).
  17. Raise the support on the lower control arm to normal ride height and tighten the lower shock clevis bolt/nut (3) to the proper specifications. Refer to TORQUE SPECIFICATIONS .
    GC0146229Courtesy of CHRYSLER GROUP, LLC
  18. Raise the left side of the crossmember (1) into mounted position.
  19. Install the left side crossmember mounting bolts (2). Snug, but do not fully tighten bolts at this time. 
  20. Once the mounts are lined up with location marks, on both sides of vehicle, tighten all four rear suspension crossmember support bolts (2) to the proper specifications. Refer to TORQUE SPECIFICATIONS  .
    GC0146149Courtesy of CHRYSLER GROUP, LLC
  21. Route the wheel speed sensor and connect the wheel speed sensor wiring connector (1) to the wiring harness connector (2).
  22. Attach the wheel speed sensor (1) wiring routing clip (not shown) to the top of the cradle (3).
    GC0145673Courtesy of CHRYSLER GROUP, LLC
  23. Connect the brake cable end (2) to the equalizer (3).
    GC0146230Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    Front brake rotor shown, rear brake rotor similar.

    NOTE:

    Brake caliper slide pins (1) should be free from debris.

  24. Position the brake caliper/pads and tighten the brake caliper slide bolts (guide pins) (1) to the proper specifications. Refer to TORQUE SPECIFICATIONS .
  25. Install the caliper slide bolt dust shields.
    GC0145588Courtesy of CHRYSLER GROUP, LLC
  26. Install the brake caliper tension clip (3).
  27. Install the tire and wheel assembly. Refer to WHEELS, STANDARD PROCEDURE .
  28. Install the rear driveshaft. Refer to SHAFT, DRIVE, REAR, INSTALLATION .
  29. Pump brake pedal several times to ensure vehicle has a firm brake pedal before moving vehicle.
  30. Perform wheel alignment, paying special attention to thrust angle. If rear crossmember needs to be shifted to align thrust angle. Refer to WHEEL ALIGNMENT, STANDARD PROCEDURE .
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