American Expedition Vehicles JK Rear Bumper/Tire Carrier - Manual (Page 12)

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G. TEST TIRE CARRIER OPERATION AND SHIM AS NECESSARY
1. Temporarily install the spare tire and wheel for the following test.
2. Test the operation of the TIRE CARRIER, it should operate smoothly and when nearly closed, the
horizontal tube of the TIRE CARRIER and the SADDLE BLOCK should be within ¼” (vertically) of being
concentric with each other.
3. Check to see if the TURNBUCKLE LINKAGE fully clears the channel when the TIRE CARRIER travels
throughout its full range.
4. Many Jeep JK Frames are not square when viewed from the rear. This discrepancy can cause the
TIRE CARRIER to “droop”. If this is the case, it will cause the TIRE CARRIER and SADDLE BLOCK to
not match up well and will cause the TURNBUCKLE LINKAGE to contact the channel when the TIRE
CARRIER travels throughout its range.
5. SHIM the SPINDLE HOUSING as necessary to correct the “droop” caused by the frame build variance.
• Three SHIMS are provided; any combination can be used to achieve the desired results.
• The pointed end of the SHIM is designed to fit into a location tab on the SPINDLE HOUSING.
• The handle tab is designed to bend out to make the SHIMS easier to hold on to and to lock
into place in the SPINDLE HOUSING.
• Early SPINDLE HOUSINGS do not have the location notches for the SHIMS. Place the shims in
the approximate location shown.