TM 55-2840-241-23
Table 4-1. Troubleshooting (Continued)
Item
Trouble
Probable cause
Remedy
14
e. Gage indication
(cont)
inaccurate.
Do not attempt to adjust
pressure regulating valve
to compensate for step
change in oil pressure.
This condition indicates
oil system problems other
than the pressure regulat-
ing valve.
15 High oil pressure.
f. Oil pressure not
properly adjusted.
g. Increase in oil pump
internal clearances or
sheared drive.
h. Oil contamination and
foaming.
i. Wear of filter housing
due to vibration of filter
inlet and filter bypass
tubes.
a. Oil pressure gage and
transmitter
records
inaccurately.
Do not attempt to adjust
pressure regulating valve
to compensate for step
change in oil pressure.
This condition indicates
oil system problems other
than the pressure regulat-
ing valve.
b. Pressure regulating
valve improperly
adjusted.
e. Check transmitter or indicator.
Repair or replace if necessary. (Refer
to TM 55-1520-228-23.)
f. Adjust oil pressure regulating
valve. (Refer to para 5-26.)
g. Replace engine. (Refer to TM
55-1520-228-23.)
h. Drain oil and replace filter. (Refer
to para 5-25.) Inspect magnetic chip
detectors for metallic particles.
(Refer to para 5-24.) Thoroughly
flush with engine oil while motoring
engine. Drain and refill with engine
oil.
i. Replace packings on the inlet and
bypass tubes. Replace the filter
housing as required. (Refer to para
5-27.)
a. Check gage and transmitter.
b. Readjust oil
valve. (Refer to
pressure regulating
para 5-26.)
Change 14
4-6.1/(4-6.2 blank)
