DMF RW-1016, Parts & Service Manual

Page: 95 / 110

© 2017 DMF, Inc. All Rights Reserved. Page 2 of 4
Installation
Warnings:

Never use anti-seize on studs or lug nuts.

Hand-torque all fasteners to the provided specifications using a torque wrench.

Improper installation or failure to perform a thorough check for clearances once this unit is installed
may lead to damage to the chassis, wheels/tires, or personnel.
1. Install TPMS Sensors and Tires
a. Mount sensors to 19.5” rims as detailed in Figure 1.
b. Mount and balance selected tires.
c. Inflate tires to a cold pressure of 85 psi.
2. Remove Stock Wheels and Tires
a. Lift the vehicle and properly support using jack-stands.
b. Remove the stock wheels and tires, retaining the stock lug nuts for reuse.
3. Install Wheel Adapters and 19.5” Rims
a. Remove and discard the factory spring clips on the factory studs.
b. Mount the wheel adapters to factory hubs using factory lug nuts; torque as specified in Figure 1.
c. Mount the 19.5” rims to the Wheel Adapter using the provided M20 Split Flange Nuts; torque as
specified in Figure 1.
4. Install Steering Stops
a. Steering stops are “handed” and must be installed on the correct side of the vehicle.
b. Remove the lower kingpin nut from each front steering knuckle as shown in Figure 2.
c. Install steering stops as shown, and secure with the included washer M16 Type C locknuts.
d. Turn the steering wheel to its extents in both directions and verify the steering stops are
contacting the stop surfaces. It is usually necessary to have someone hold the steering wheel at
full lock in both directions while looking for interference.
5. Verify Steering Clearances
a. Verify that neither the rims nor tires contact any frame or suspension components in any
combination of steering positions and axle droop/jounce conditions.
b. Verify that all brake, ABS sensor and other wires or hoses are clear in all steering and suspension
positions. Restrain if necessary.
*STEPS 6-8 REQUIRE SPECIALIZED EQUIPMENT OR SOFTWARE AND NEED TO BE PERFORMED BY A DEALERSHIP*
6. Change Speedometer Calibration
a. The suggested 19.5” tires have a larger rolling diameter than the tires found on most “work
truck” trim level vehicles.
b. The speedometer calibration is limited to stock tire sizes. As the tires we recommend are not a
stock size for this vehicle, the stock LT265/60R20 tire setting should be selected as it is the most
comparable in size.
7. Change TPMS Threshold Pressures
a. The suggested cold inflation pressure of 85 psi is typically higher than factory tires, which can
cause errant TPMS warnings if the system threshold pressures are not adjusted.
b. Adjust the TPMS system for a nominal pressure of 85 psi.
8. “Re-Learn” New TPMS Sensors
a. The TPMS system will not operate properly until the new sensors are paired with the vehicle.
b. Use factory tools and techniques to “re-learn” the new sensors to the vehicle.