UNIT TROUBLESHOOTING - CONTINUED
TEST OR INSPECTION
14. WHEELS SHIMMY
Step 1. Check for loose or worn wheel bearings (1).
Adjust or replace wheel bearings (1) (page 4-147). If wheel bearings were not
worn or loose, go on to step 2 for front wheels.
Step 2. Check for loose kingpins (2), tie rod ends (3) or steering arm pivot bushing (4) and
worn steering pin assembly.
Replace any defective parts in steering system (page 4-70) and make any
necessary adjustments. If all parts are good and adjustments are not
necessary, go to step 3.
Step 3. Check front wheel alinement if front wheels shimmy.
Aline front wheels (page 4-73)
AIR SPRING LOSES PRESSURE
Test for leakage.
Using soapy water, test for leaks. If leak is at valve stem, tighten or replace the
valve stem. If the air spring is leaking, replace the entire air spring (page 4-167).