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PROBLEM
RIM FAILURE
**
CRACKING
IN ALL INSTANCES OF RIM FAILURE, REPLACE THE RIM IMMEDIATELY!
**
BENDING OR WARPING
*BROKEN STUDS*
REPLACE BROKEN STUDS BEFORE USING THE SEMITRAILER!
*
SEMITRAILER TRACKING PROBLEMS:
TRACKS TO ONE SIDE
TRACKS TO EITHER SIDE
AIR RIDE HEIGHT PROBLEMS:
TOO HIGH
TOO LOW
UNEVEN FROM SIDE TO SIDE
TABLE OF CONTENTS
PROBABLE CAUSE
Overinflated tires
High speeds
High speed cornering
Over loading
Curb-hopping or potholes
Improper tightening sequence
Over tightening
Axle alignment
Broken or bent springs or equalizers
Axles not parallel
Axle to control valve linkage
Height Control Valve internal leak
Axle to control valve linkage
Height Control Valve filter plugged
Pressure Protection Valve filter plugged
System air pressure low (65 PSI
minimum required)
Linkage adjustment
Exhaust port plugged
Height control valve internal leak
Supply line to one height control valve
pinched, restricted, or plugged
TROUBLESHOOTING GUIDE
SOLUTION
Deflate tire to proper PSI.
Adjust speed according to road and load
conditions.
Adjust cornering practices.
Check rim load rating.
Adjust turning practices and adjust
speed accordingly with road
conditions.
Follow proper tightening sequence (
Figure 4-18
)
Use correct torque when mounting
"Specific Bolt Torque" on
page 2-2.)
(See "Axle
Re-align axle
Alignment" on page 4-13.)
Replace defective parts.
Re-align axles
Readjust linkage.
Repair or replace valve.
Readjust linkage.
Clean or replace valve.
Clean or replace valve.
Troubleshoot air supply.
Readjust linkage
Clean or replace valve(s).
Repair or replace valve.
Repair or replace line.
See
(See
5-3
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