Landoll 930E, Operator'S Manual, Page: 75 / 84

TROUBLESHOOTING GUIDE
5-3
TABLE OF CONTENTS
CRACKING Overinflated tires Deflate tire to proper PSI.
High speeds Adjust speed according to road and load
conditions.
High speed cornering Adjust cornering practices.
Over loading Check rim load rating.
*IN ALL INSTANCES OF RIM FAILURE, REPLACE THE RIM IMMEDIATELY!
BENDING OR WARPING Curb-hopping or potholes Adjust turning practices and adjust
speed accordingly with road
conditions.
Improper tightening sequence Follow proper tightening sequence (
See
Figure 4-21
)
BROKEN STUDS* Over tightening Use correct torque when mounting
(See
“SPECIFIC BOLT TORQUES”
on page 2-1.)
*REPLACE BROKEN STUDS BEFORE USING THE SEMITRAILER!
SEMITRAILER TRACKING PROBLEMS:
TRACKS TO ONE SIDE Axle alignment Re-align axle
(See “Axle
Alignment” on page 4-15.)
TRACKS TO EITHER SIDE Broken or bent springs or equalizers Replace defective parts.
Axles not parallel Re-align axles
AIR RIDE HEIGHT PROBLEMS:
TOO HIGH Axle to control valve linkage Readjust linkage.
Height Control Valve internal leak Repair or replace valve.
TOO LOW Axle to control valve linkage Readjust linkage.
Height Control Valve filter plugged Clean or replace valve.
Pressure Protection Valve filter plugged Clean or replace valve.
System air pressure low (65 PSI
minimum required) Troubleshoot air supply.
UNEVEN FROM SIDE TO SIDE Linkage adjustment Readjust linkage
Exhaust port plugged Clean or replace valve(s).
Height control valve internal leak Repair or replace valve.
Supply line to one height control valve
pinched, restricted, or plugged Repair or replace line.
PROBLEM PROBABLE CAUSE SOLUTION