Rough Country 477.20 - Manual (Page 3)

PRE-INSTALLATION
Prior to beginning installation, carefully inspect the vehicle’s steering and driveline system paying close attention to the
tie rod ends, ball joints, and wheel bearings. Additionally, check steering to frame and suspension to frame attaching
points for stress cracks. The overall vehicle must be in excellent working condition before beginning installation. Repair
or replace all worn or damaged parts.
FRONT INSTALLATION
1. With the truck sitting on a level surface measure the distance from the center of the wheel to the bottom of the
fender. Record these Measurements. See Photo 1 & 2.
Front Driver ______ Front Passenger ______
Rear Driver ______ Rear Passenger ______
2. With the truck parked on a clean, dry, and level surface set the parking brake. Chock the rear wheels. Using a floor
jack raise the front of the truck and support the frame rail
with approved jack stands. NEVER WORK UNDER AN
UNSUPPORTED VEHICLE.
3. Using a 22 mm socket remove the lug nuts on the front
wheels and remove the front wheels
4. Measure the amount of thread showing on the torsion bar
adjuster bolts. See Photo 3. Drivers Side ______
Passenger Side ______ Using a 18mm socket remove the
adjuster bolt
.
5. Using a Ford approved torsion bar tool, remove the tor-
sion bar adjuster nuts and adjusters. Set aside, these will
be reused.
Photo 1 Photo 2
Photo 3
Torque Specs:
Size Grade 5 Grade 8
3/8” 30 ft/lbs 35 ft/lbs
7/16” 45 ft/lbs 60 ft/lbs
1/2” 65 ft/lbs 90 ft/lbs
9/16” 95 ft/lbs 130 ft/lbs
5/8” 135 ft/lbs 175 ft/lbs
Class 8.8 Class 10.9
6MM 5 ft/lbs 9 ft/lbs
8MM 18ft/lbs 23 ft/lbs
10MM 32ft/lbs 45ft/lbs
12MM 55ft/lbs 75ft/lbs
14MM 85ft/lbs 120ft/lbs
Tool Required List:
8mm socket 10mm socket
12mm socket 13mm socket
14mm socket 15mm socket
18mm socket 21mm socket
22mm socket 24mm socket
36mm socket 8mm wrench
10mm wrench 10mm wrench
12mm wrench 13mm wrench
15mm wrench 18mm wrench
21mm wrench 22mm wrench
24mm wrench Torque Ratchet
Torsion Bar Tool 17/64 drill bit
5/64 drill bit Sawsall
Drill Grinder
Jack stands (2) Floor jack
Safety Glasses and Gloves