Rough Country 591.20 - Manual (Page 6)

REAR LEAF SPRING INSTALLATION
1. Chock 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 18mm wrench for the upper, and 19mm and
15mm wrench for the lower, remove the stock shock absorbers, retain the stock hardware for reuse.
3. On Driver side disconnect the parking brake cable bracket from the spring plate and retain hardware See Photo 1.
Take care not to over extend the brake lines.
4. Using a 24mm socket, remove the stock u-bolts. Use the floor jack to lower the axle assembly to allow for lifted block
installation.
5. Remove the spring eye bolts and nuts and remove the spring . If equipped: the top mounted block and top mounted
overload spring must be removed and will not be reused.
6. Install the new spring on vehicle using factory spring bolts. Torque to 86-110 ft./lbs.
7.
Reattach parking brake cable bracket to the spring plate. If more slack is needed remove the cable from the rearmost cable
ring on the frame rail See Photo 2.
8. Locate shock part number 658601 gas shock and assemble poly bushings and sleeve in shock. Using a 18mm
wrench, for the upper, and a 19mm and 15mm wrench for the lower. Install using factory hardware on upper and
lower shock mount
9. Install the tires and wheels.
10. Jack up the rear of the vehicle and remove the jack stands. Lower the vehicle to the floor.
11. With the weight of the vehicle on the axle, torque the u-bolts to 120 ft/lbs.
12. On the leaf spring to front spring hanger torque bolts to 222 ft.lbs. and on rear leaf spring to shackle and shackle to
frame mount torque bolts to 185 ft.lbs .
13. Check all hardware for proper torque .
Photo 1 Photo 2