TM-9-2320-366-20-2
M1083 SERIES, 5 TON, 6x6, MEDIUM TACTICAL VEHICLES (MTV)
TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; UNIT MAINTENANCE; VOLUME NO. 2 OF 5
FEBRUARY 2006
CHANGE 3
TM-9-2320-366-20-2 - Page 842 of 1632
f11. TRANSMISSION UNUSUALLY NOISY WHEN OPERATING (CONT)
WARNING
Read WARNING
on following page.
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 9-2320-366-20-2
2-1648
Change 1
Is 218-276 psi
(1,503-1,903 kPa)
present at main oil pressure
tap?
YES
Notify DS Maintenance.
NO
4.
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