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

Page 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

3/8”-16 30 40

3/8”-24 35 45

7/16”-14 50

7/16”-20 55

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