Trail Master Suspension TM3440-20013 JEEP WRANGLER (TJ) 4 SPRING KIT - Manual (Page 3)

3
Before Starting Installation
1. Carefully read all warnings and instructions
completely before beginning.
2. Verify all parts have been received in this kit by
checking the parts list at the end of this docu-
ment.
3. Only install this kit on the vehicle for which
it is specified. If anytime during the installation
you encounter something different from what is
outlined in the instructions, call technical support
at (877) 695-7812. Park vehicle on a clean, dry,
flat, level surface and block tires so vehicle can-
not roll in either direction.
4. Park vehicle on a clean, dry, flat, level surface
and block tires so vehicle cannot roll in either
direction.
5. Measure ride height with the vehicle supporting
its own weight on level ground. To settle the
suspension, the vehicle should be driven for-
ward at least 10 feet immediately prior to taking
these measurements. Ride height is the meas-
urement from the center of the axle straight up
(vertical) to the fender lip. Record this measure-
ment for all four wheels.
Torque Specifications:
See factory service manual for torque values when
reusing OE fasteners.
Wheel & Tire Requirements
The factory wheel and tire combination will fit once this
kit is installed.
Engine Compartment
1. Disconnect both battery cables. Disconnect
negative cable first, then positive cable.
NOTE
Adhere to recommendations when replacement fas-
teners, retainers and keepers are called out in the fac-
tory service manual. When re-assembling the vehicle it
is recommended by the vehicle manufacturer that cer-
tain fasteners are replaced in order to maintain proper
retention characteristics. This system may not include
all replacement hardware as recommended by the fac-
tory service manual. Additional replacement hardware
should be obtained prior to installation of this system
to meet the requirements of the factory service man-
ual.
NOTE
Kit parts are prefaced by the word kit and appear in
bold print.
See factory service manual for torque values when re-using
OE fasteners.
Bolt Size Grade 5 (ft.-lbs.) Grade 8 (ft.-lbs.)
1/4”-20 10 10
1/4”-28 10 12.5
5/16”-18 17 22.5
5/16”-24 20 25
3/8”-16 30 40
3/8”-24 35 45
7/16”-14 50 65
7/16”-20 55 70
1/2”-13 75 100
1/2”-20 80 115
9/16”-12 105 135
9/16”-18 115 150
5/8”-11 150 195
5/8”-18 160 210
3/4”-16 175 225