TM 5-3810-307-24-1-1
Direct/General Support Troubleshooting - Continued
SYMPTOM
PROBABLE CAUSE
CORRECTIVE ACTION
3. Steering is erratic 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.
4. Steering pump shaft seal
a. Worn shaft seal.
a. Replace shaft seal.
leaking.
NOTE
If replacing shaft seal
does not stop leakage,
pump should be dis-
assembled and the
following checked.
b. Broken diaphragm seal or
b. Replace seal or gasket.
backup gasket.
c. Bearing out of position.
c. Replace bearing.
d. Excessive internal wear.
d. Replace pump.
5. Steering pump
a. Pump drive shaft
a. Check alignment of shafts.
overheating.
excessively misaligned with
pump driven shaft.
b. Pump drive shaft axially
b. Check for clearance at ends of
loaded by driving shaft.
shafts, shaft misalignment, or
worn driving splines.
c. System relief valve
c. Check relief valve setting.
bypassing.
Adjust setting or replace valve
as necessary.
SWING SYSTEM
1. Boom swing operation
a. Damaged relief valve.
a. Replace relief valve.
erratic in either direction.
b. Swing brake dragging (not
b. Readjust and/or replace
releasing properly).
necessary parts.
1-5-19
