TM-9-2320-365-20-2
M1078 SERIES, 2 1/2-TON, 4 X 4, LIGHT MEDIUM TACTICAL VEHICLES (LMTV)
TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; UNIT MAINTENANCE; VOLUME NO. 2 OF 5
FEBRUARY 2006
CHANGE 3
TM-9-2320-365-20-2 - Page 370 of 1432
WARNING
Read WARNING
on following page.
YES
Notify DS Maintenance.
NO
f11. TRANSMISSION UNUSUALLY NOISY WHEN OPERATING (CONT)
TEST OPTIONS
Main Pressure Test or
STE/ICE-R Test #50
REASON FOR QUESTION
Low main oil pressure causes
main regulator valve to
oscillate.
KNOWN INFO
Transmission oil level OK.
Oil not contaminated.
Operating temperature normal.
No codes logged in ECU.
PTO engagement OK.
Scavenge pump engagement
OK.
POSSIBLE PROBLEMS
Faulty oil pump.
Faulty flexplate bolts.
Faulty flexplate.
Faulty propeller shafts and /
or universal joints.
Faulty transmission transfer
case,
TM 9-2320-365-20-2
2-1424
Change 1
Is 218-276 psi
(1,503-1,903 kPa)
present at main oil pressure
tap?
4.
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