Rough Country 170P - Manual (Page 7)

1. Chock the front wheels and jack up the rear of the vehicle. Secure with jack stands on the frame rail.
2. Place a floor jack under the rear differential on the rear axle. Using a 13mm wrench for the upper, and 18mm and
21mm wrench for the lower, remove the stock shock absorbers, retain the stock hardware.
3. Using a 21mm socket, remove the stock u-bolts. Use the floor jack to lower the axle assembly.
4. If installing block skip to Step 10.
5. Remove the spring eye bolts and nuts and remove the rear spring.
6. Place c-clamps on bolt sides of the center pin and tighten. Unbolt the center pin and remove. Un-clamp leaf spring.
CAUTION– Take care when releasing the c-clamps since the springs are under load and will spring apart when re-
leased.
7. Position the add-a-leaf under the next longest leaf of the spring pack. Replace the shorter spring leafs under the
helper leaf and clamp together, being careful to align the center pin holes in the spring leafs.
8. Insert the new center pin supplied with the kit through the spring assembly with the head of the center pin in the
same location as the stock pin. Re-compress the pack with the c-clamps, not the center pin, to avoid stripping of nut/
bolt threads. Bolt together being sure to align leafs. Cut of excess threads of the center pin with a hack saw. If appli-
cable, re-form straps and or install new bend straps. If heat is used on the straps, allow them to cool naturally and
thoroughly before removing the c-clamps.
9. Reinstall leaf springs, using the factory hardware. Skip to step 11.
10. Install the Rough Country block in between the leaf spring and the axle. Jack up the axle and align the pins in the
blocks and axle seats. Secure with new u-bolts and torque evenly to 85 ft/lbs.
11. Locate shock part # 8134/9134 and assemble poly bushings and sleeve in shock. Using a 12mm wrench, for the
upper and a 18mm wrench for the lower. Install using your factory hardware on upper and lower shock mount.
12. Install the tires and wheels.
13. Jack up the rear of the vehicle and remove the jack stands. Lower the vehicle to the floor.
14. Adjust torsion bars so that the truck sets level.
REAR INSTALLATION INSTRUCTIONS
42. Locate the new shock bracket from the 7545 kit box.
Place the shock bracket on the original shock mount on
the lower control arm, insert the sleeve provided as
shown in PHOTO 30 (88-91 Shown). The shock mount
on the 88-91, and 92-98 are different. See below.
43. On the 88-91 models the bracket is secured with the 3/8”
x 3/4” bolt , washer and flange nut in the bracket and the
lower control arm. See PHOTO 30. On the 92-98 models
the 3/8” bolt is not used. See PHOTO 31. Bolt the
bracket in place using the 12mm x 65mm bolt and flange
lock nut.
44. Install shock part # 8101/9101 shock absorber and install
with the stock upper and lower bolts, using a 18mm
socket and wrench. See Photo 32.
45. Reinstall the brake rotor and brake caliper using a 3/8”
allen wrench. Adjust brake hose for slack.
46. Install the supplied torsion bar adjusters in the same manner as the stock was removed with the torsion bar tool.
Tighten the torsion bar bolt to the recorded measurement in Step 2.
47. Reinstall Tires and wheels. Lower. Vehicle to the ground
48. Be sure to check brake line /ABS wires for slack and clearance before driving the vehicle. If needed slightly
bend brake caliper metal leader away from harm. It will be necessary to align the front end IMMEDIATELY
after the installation is complete.
49. Recommended Alignment Settings: Caster 3º + 1º, Camber -5º + 0º, Toe in 1/16” per wheel.
INSTALL BRACKET AND SHOCK
PHOTO 30
INSTALL THE SLEEVE AND 3/8” X 3/4” BOLT
PHOTO 31 PHOTO 32
92-98 SHOCK BRACKET SHOWN