Rough Country 639P User Manual
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11. Install the new bump stop mounts with the supplied 8mm x 95mm (approx 3.75”)bolts and washers from Bag1 using
a 13mm wrench/socket. See Photo 7. Reinstall the factory rubber bump stops into the factory bump stop cups.
12. Install the new front coil spring using a coil spring compressor. On lower surface make sure coil end is rotated to
stop and on upper mount re-use stock rubber coil isolator.
13. Install the new shock absorbers using the supplied 5/16” x 1” bolts in bag 2, washers and nuts on the bottom bar pin
mount. Note: Shocks are to be installed piston down. Tighten using a 14mm wrench at the top using supplied stem
bushings, washers and nuts and a 13mm wrench on the bottom.
14. Install the tires and wheels and tighten to factory specifications.
15. Jack up the vehicle ,remove the jack stands and lower the vehicle to the ground.
16. Install supplied pin on the axle with supplied crush sleeve. See Photo 8. Hold using a screwdriver & tighten 1/2” lock
nut using a 3/4” wrench.
17. Assemble the sway bar link with the link body, the jam nut and rod end Adjust the sway bar to a length of 11 1/4”
from top to bottom. Tighten the jam nut against the rod end using a 19mm & 5/8” wrench.
18. Install the sway bar link on the upper sway bar mount with the supplied 12mm flange lock nut. See Photo 9. Tighten
using a 18mm & 5/8” wrench.
19. Remove the stock bolt from the vehicle on both driver and passengers side and install the sway bar bracket with
stock hardware. Tighten bolt using a 15mm wrench. See Photo 10.
20. With the sway bar link installed on the supplied frame
bracket, swing the bracket and sway bar link up and posi-
tion the bracket on the frame as shown in Photo 11.
Photo 7
Install Bump Stop Bracket
Photo 9
Install the link on the mount
Photo 8
Install the pin on the axle
Photo 10
Place the mount on the uni-body
Photo 11