TM 5-3810-307-24-1-1
Direct/General Support Troubleshooting - Continued
SYMPTOM
PROBABLE CAUSE
CORRECTIVE ACTION
6. Desiccant material being
a. Defective cloth covered
a. Replace desiccant cartridge.
expelled from air dryer
perforated plate in air dryer.
purge valve exhaust (may
look like whitish liquid,
b. Desiccant cartridge not
b. Check that cartridge is securely
paste, or small beads).
assembled properly to end
attached to end cover. Tighten
cover.
as necessary.
c. Air dryer not securely
c. Tighten as necessary.
mounted.
Vibration should be kept to a
minimum.
d. Compressor passing
excessive oil.
d. Check the compressor for
excessive oil passing, correct
as necessary. Rebuild or
replace cartridge.
7. Constant seepage of air
a. Inlet of compressor
a. Some leakage of pressure past
at air dryer purge valve
pressurized by engine
metal seat of turbo cut-off
exhaust (non-charging
turbocharger.
feature of air dryer can be
mode).
expected and may be audible.
This slight loss of air will not
affect performance.
b. Defective check valve
b. Test valve, refer to Symptom 1.
assembly in air dryer end
cover.
8. Air dryer purge piston
Compressor fails to unload.
Faulty governor installation or air
cycles rapidly with
line from compressor to governor
compressor unloaded
kinked or restricted. Repair as
(non-compressing mode).
necessary.
STEERING SYSTEM
1. Hard to steer left and
a. Defective pressure relief
a. Test pressure relief valve.
right.
valve.
Repair or replace as necessary.
b. Defective steering control
b. Test steering control valve.
valve.
Repair or replace as necessary.
c. Defective selector valve.
c. Test selector valve. Repair or
replace as necessary.
d. Defective steering pump.
d. Test steering pump. Repair or
replace as necessary.
2. Hard to steer either left or
Defective steering cylinder.
Repair or replace cylinder.
right.
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