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Home >> Jeep >> 2018 >> Grand Cherokee Trackhawk >> Repair and Diagnosis >> Body & Frame >> Frames, Subframes & Crossmembers >> Frame And Bumpers >> Frame >> CROSSMEMBER, Rear >> Installation
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

CROSSMEMBER, Rear: Installation

GC0080379Courtesy of CHRYSLER GROUP, LLC
  1. Install rear crossmember (1) on jack (2) head in same position in which it was removed and secure in place.
  2. Raise crossmember to body mounting points. As crossmember is raised, align shocks (3) with pockets in spring links. Do not install bolts at this time. 
    GC0146229Courtesy of CHRYSLER GROUP, LLC
  3. Continue to raise crossmember (1) with jack until crossmember mounting bolts (2) can be installed. Install left side crossmember mounting bolts, but not the right side bolts. It is not necessary to tighten bolts at this point.
    GC0079773Courtesy of CHRYSLER GROUP, LLC
    1 - BODY
    2 - MARKER (OR CRAYON)
    3 - CROSSMEMBER BUSHING FLANGE
  4. Shift crossmember as necessary to line up mounts (3) with location marks drawn on body (1) before removal.
    GC0146229Courtesy of CHRYSLER GROUP, LLC
  5. Continue to raise crossmember (1) with jack until crossmember mounting bolts (2) can be installed. Install left side crossmember mounting bolts, but not the right side bolts. It is not necessary to tighten 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 jack allowing right side of crossmember to drop. Do not lower jack at a fast rate.  Lower jack just enough to allow spring (2) Installation. Do not lower jack any further than necessary. 
    NOTE:

    Before installing coil spring, make sure isolators (1 and 5) are completely installed on ends of spring.

  7. Install coil spring (2) with isolators into spring pocket of spring link fitting the lower isolator to the shape of the pocket, then align top of spring with body mount.
    GC0145856Courtesy of CHRYSLER GROUP, LLC
  8. Carefully raise jack, guiding coil spring and lower end of shock absorber (1) into mounted positions. Once shock absorber (1) lower mounting hole lines up with hole in control arm, stop jacking.
  9. Install the lower shock bolt/nut (3). Raise the support on the lower control arm to normal ride height and tighten the bolt/nut to 235 N.m (173 ft. lbs.).
    GC0146229Courtesy of CHRYSLER GROUP, LLC
  10. Raise right side of crossmember (1) into mounted position. Install right side crossmember mounting bolts (2). Snug, but do not fully tighten bolts at this time. 
  11. Remove both front and rear crossmember mounting bolts (2) on 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).

  12. Slowly  lower jack allowing left side of crossmember to drop. Do not lower jack at a fast rate.  Lower jack just enough to allow spring (2) Installation. Do not lower jack any further than necessary. 
    NOTE:

    Before installing coil spring, make sure isolators (1 and 5) are completely installed on ends of spring.

  13. Install coil spring (2) with isolators into spring pocket of spring link fitting the lower isolator to the shape of the pocket, then align top of spring with body mount.
    GC0145856Courtesy of CHRYSLER GROUP, LLC
  14. Carefully raise jack, guiding coil spring and lower end of shock absorber (1) into mounted positions. Once shock absorber (1) lower mounting hole lines up with hole in the control arm, stop jacking.
  15. Install the lower shock bolt/nut (3). Raise the support on the lower control arm to normal ride height and tighten the bolt/nut to 235 N.m (173 ft. lbs.).
    GC0146229Courtesy of CHRYSLER GROUP, LLC
  16. Raise left side of crossmember (1) into mounted position. Install left side crossmember mounting bolts (2 and 3). Snug, but do not fully tighten bolts at this time. 
  17. Once mounts are lined up with location marks, on both sides of vehicle, tighten all four crossmember mounting bolts (2) to 180 N.m (133 ft. lbs.)
    GC0146149Courtesy of CHRYSLER GROUP, LLC
  18. Route the wheel speed sensor and connect the wheel speed sensor wiring connector (1) to the wiring harness connector (2).
  19. Attach the wheel speed sensor (1) wiring routing clip (not shown) to the top of the cradle (3).
    GC0145673Courtesy of CHRYSLER GROUP, LLC
  20. Connect the brake cable end to the equalizer (3).
    GC0146230Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    Front rotor shown, rear rotor similar.

    NOTE:

    Caliper slide pins should be free from debris.

  21. Position the brake caliper/pads and tighten the brake caliper slide bolts (guide pins) (1) to 55 N.m (41 ft. lbs.).
  22. Install the caliper slide bolt dust shields.
    GC0145588Courtesy of CHRYSLER GROUP, LLC
  23. Install the brake caliper tension clip (1).
  24. Install the tire and wheel assembly. Refer to WHEELS, STANDARD PROCEDURE .
  25. Install the rear drive shaft. Refer to SHAFT, DRIVE, REAR, INSTALLATION .
  26. Pump brake pedal several times to ensure vehicle has a firm brake pedal before moving vehicle.
  27. 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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