2005-2006 Jeep Grand Cherokee/Commander 4″ Suspension System
The front control arm mounting pockets must be trimmed slightly to install the front crossmember (0 902). Make a cut mark along the front lower bottom edge of the pocket to be flush to the control arm mounting surface. Also, make a mark in line with the inside lower edge to remove the rounded corner from the lower plate (Fig 22). Cut the marked area of the control arm pocket and paint any bare metal to prevent corrosion.
Install the new front crossmember in the OE front lower control arm pockets so that the flat face is to the front. Fasten the crossmember with the OE control arm bolts and nut tabs installed from back to front (Fig 23). Leave hardware loose.
The OE rear lower control arm mounts are pressed on to the control arms from the factory. These mounts need to be rotated 80 degrees so they can mount to the bottom of the new rear crossmember. Secure the control arm in a vise. Mark the relationship between the end of the control arm and the rubber mount (Fig 24). Hold on of the mounting tabs of the control arm mount with an adjustable wrench and rotate it until the marks are 80 degrees from each other. Note: Spraying silicone based lubricant on the center of the bushing will help lubricant it to rotate easier.
Mount the lower control arms in the front crossmember with a provided cam bolt and cam washer from the front back (Fig 25). Loosely fasten the cam bolt with a second cam washer and 5/8” nut (BP 743). Attach the control arm to the bottom of the rear crossmember with 2mm x 80mm bolts and 7/ 6” USS (yellow zinc) washers (BP 743) from the top down (Fig 26). Fasten the bolts with the OE nut tabs. Torque the rear 2mm hardware to 65 ft-lbs. Snug front hardware. Final cam bolt torque will be done with the vehicle on the ground.
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