Rough Country 278.20 - Manual (Page 11)

10. Using a 15mm wrench, remove the 2 bolts securing the lower strut mount to the lower control arm and remove the strut
from the vehicle. Retain stock hardware. See Photo 7.
11. Mark location of alignment cams on upper control arms to allow installation of new arm to same position. Using a
21mm wrench and 21mm socket, remove the upper control arms from the vehicle. See Photo 8. Retain the hardware.
12. Using a 18mm socket and wrench remove the four bolts holding in the factory cross member. Retain factory hardware.
13. Use a jack stand to support the front diff. Remove the front driver and passenger bolts holding the diff mount to the
frame with a 15mm and 18mm wrench. See Photo 9.
14. Lower the jack stand and pull down on the front of the diff to allow enough room to slide the two aluminum diff drop
spacer into place. Use the supplied 7/16” x 5” bolts, lock washers, and nuts. Tighten with a 16mm and 18mm socket
and wrench. See Photo 10.
15. On the driver side of the factory cross member measure from the end of the tube and make marks at 4.5” and 8” on the
front side as shown in Photo 11. Measure 1/4” for the bottom, and 2” from the back side and mark.
16. Using a die grinder and cut across the marks as shown in Photo 12. Hold the cross member into place and check clear-
ance between the cross member and front diff.
Photo 7 Photo 8
Photo 9 Photo 10
Photo 11 Photo 12