Rough Country PERF689 User Manual
Page 5
11. Using a reciprocating saw, cut the stock lower control arm mounts even with the frame. See Photo 5.
12. After cutting , grind the edges down smooth. See Photo 6.
13. Remove the upper control arms from the axle as shown in Photo 7 and the frame location using a 15mm Socket /
wrench. Retain axle hardware
14. Support the transmission with a transmission jack or comparable jack.
15. Remove the 4 transmission nuts from the cross member using a 1/2” socket. See Photo 8. Retain the hardware for
reuse.
16. While the transmission is supported with a floor jack, remove the transmission cross member as shown in Photo 9
using a 15mm socket. It will also be necessary to remove the factory studs that secure the cross member to the
frame if not previously removed. Note: The jam nut method can be used to remove the studs or a stud extractor.
17. Position the new cross member on the frame rail aligning the two factory holes for the cross-member as shown in
Photo 10 with the supplied 10mm x 35mm bolts in the center hole of the new bracket. Snug but do not fully tighten
the bolts using a 17mm wrench.
PHOTO 5
PHOTO 6
CUT HERE
PHOTO 7
PHOTO 8
PHOTO 9
PHOTO 10
Remove the lower mount from the Jeep
Grind the surface smooth
Remove the upper control arms
Remove the mounting hardware
Remove the cross-member hardware
Install the new cross-member