TM 5-3810-307-24-1-1
Organizational Troubleshooting
SYMPTOM
PROBABLE CAUSE
CORRECTIVE ACTION
TRANSMISSION
1. Transmission OIL TEMP
a. Transmission oil pump
a. Check and tighten oil line
gauge indicates
suction line loose (sucking
connections.
transmission over-
air).
2. Low power.
a. Low engine rpm at converter
a. Check and adjust idle speed.
stall.
HYDRAULIC SYSTEM
1. No oil flow in system.
a. Reservoir to pump supply
a. Replace or clear line as
line broken or restricted.
necessary.
b. Suction line fittings loose
b. Check and tighten suction line
allowing air to enter system.
fittings.
c. Hydraulic system
c. Drain, flush, and refill system.
contaminated blocking flow.
2. Excessive pressure
Restricted pump to control
Clear restriction.
buildup.
supply line.
3. Hydraulic pump noisy
a. Suction line fittings loose
a. Check and tighten suction line
and oil foaming in
allowing air to enter system.
fittings.
reservoir.
b. Excessive engine rpm.
b. Check and adjust engine idle
speed as necessary.
AIR SYSTEM
1. Air dryer constantly
Excessive system leakage.
Test system for excessive leakage.
cycling or purging.
Tighten or replace tubing/hoses as
necessary.
2. Safety valve on air dryer
Defective fittings, hose, or
Inspect for and replace kinked
popping off or exhausting
tubing between air dryer and
tubing or hose.
air.
primary reservoir.
3. Constant exhaust of air at
a. Purge control line connected
a. Purge control line must be
air dryer purge valve
to reservoir or exhaust port
connected to unloader port of
exhaust or system
of governor.
governor. Reconnect as
pressure does not build.
necessary.
b. Inlet and outlet lines to air
b. Reconnect lines properly.
dryer reversed.
c. Kinked or blocked discharge
c. Reposition, clear, or replace
line.
discharge line.
d. Excessive system leakage.
d. Refer to Symptom 1.
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