From: Darrell Ramsell (daram@comcast.net)
Date: Thu Aug 26 2004 - 00:48:12 PDT
I know some people have been asking about what are normal gage reading for
Humvees. Here is what I found in TM-9-2320-280-20-10.
HMMWV Normal Operating Gage Readings
OIL PRESSURE
6.2L Idle - 15 psi / Running - 40~50 psi
6.5L Idle - 10 psi / Running - 40~50 psi
(TM-9-2320-280-20-10) Chapter 1 page 25
Note
Do not operate if oil pressure is below 6 psi.
(TM-9-2320-280-20-10) Chapter 2 page 107
New engine may have higher oil pressure readings until broken in.
WATER TEMPERATURE
Normal operation coolant temperature is 190~220 degrees.
(TM-9-2320-280-20-10) Chapter 1 page 25
Note
If coolant temperature runs higher that 230 degrees, stop engine immediately
or engine damage will occur.
(TM-9-2320-280-20-10) Chapter 2 page 107
VOLTAGE METER
Voltage meter should be in green zone.
(TM-9-2320-280-20-10) Chapter 2 page 107
Note
Do not operate if in red or yellow zone.
(TM-9-2320-280-20-10) Chapter 2 page 72
AIR RESTRICTION GAGE
Do not operate if air restriction gage reaches red zone.
(TM-9-2320-280-20-10) Chapter 2 page 72
Special Note
Allow engine at least one minute to warm up before checking gages. Gages
may not give accurate reading when engine is cold.
(TM-9-2320-280-20-10) Chapter 2 page 107
Darrell Ramsell
USMC HMMWV M-1044
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