TM-9-2320-272-23-1
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 1 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-1 - Page 369 of 1313
LOW OIL PRESSURE - Continued
STEP
1.
ARE OIL SUPPLY LINES IN GOOD CONDITION?
a.
Visually inspect oil supply lines for cracks, splits, leaks, and damage.
T0062DAA
Figure 1.
Engine Oil Lines.
WARNING
Eyeshields must be worn when cleaning with compressed air. Compressed air source
will not exceed 30 psi (207 kPa). Failure to comply may result in injury or death to
personnel.
b.
Clear clogged or obstructed lines with compressed air or sturdy wire.
CONDITION/INDICATION
ARE OIL SUPPLY LINES IN GOOD CONDITION?
DECISION
YES - Go to Step (2).
NO - Oil pick up hose is damaged. Replace damaged hose (Volume 2, WP
0224). Go to Step (4) to verify
problem is solved.
NO - Oil pump return hose is damaged. Replace oil pump return hose (Volume 2, WP
0225). Go to Step (4) to
verify problem is solved.
NO - Front sump tube is damaged. Replace front sump tube M939/A1 (Volume 2, WP
0226),
M939A2. (Volume 2, WP
0230) Go to Step (4) to verify problem is solved.
TM 9-2320-272-23-1
0017
0017-2
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