4-13. TROUBLESHOOTING (CONT)
TEST OR INSPECTION
HYDRAULIC SYSTEM - CONT
SUSPENSION RIDES STIFF AND DOES NOT ADJUST FOR BUMPS/ROAD HAZARDS - CONT
Check for damage or mechanical binding at suspension arms and suspension cylinders and at
gooseneck pivot pin and gooseneck cylinders.
Inspect areas of damage, try to determine probable cause, and repair and/or replace parts as
SUSPENSION TIRE CHANGE CHAIN IS OVER-STRESSED AND/OR BREAKS
Check that affected suspension isolation valve is closed (para. 2-6).
Operate affected suspension isolation valve and check that valve handle operates both valves equally
and is secure. Tighten or remove and replace defective parts (para. 4-92).
Be sure all four support legs (para. 2-22 and 2-23) are lowered and supporting the
platform prior to checking the suspension isolation valves for leaks or injury to
personnel may result.
Check for possible leakage at suspension isolation valve (para. 2-6).
Hydraulic fluid may be absorbed through the skin. Wear long sleeves, gloves, and
goggles or face shield. If hydraulic fluid gets into the eyes, flush them immediately
with water and seek medical attention. If hydraulic fluid gets on skin, thoroughly
wash with soap and water. Wash hands thoroughly prior to eating or smoking.
Disassemble hose/tube from fittings and reassemble using pipe sealant (item 18, appx. E). If joint still
leaks, replace parts as necessary.