TM 9-2320-360-10
2-12. DRIVING HET TRACTOR (CONT)
CAUTION
If OIL PRESS gage does not show engine oil pressure within 10-15
seconds after starting engine, shut down engine immediately.
Notify unit maintenance. Lack of lubrication may damage engine.
Do not operate engine above 1000 rpm during warm up until OIL
PRESS gage indicates 25-30 psi (172-207 kPa) at 800-1000 rpm. OIL
PRESS gage should indicate 50-70 psi (345-483 kPa) when engine
operates a 1800-2100 rpm. Lack of lubrication may damage engine.
NOTE
At idle, oil pressure can go as low as 5 psi (34 kPa).
At temperatures between -26 F (-14 C) and -50 F (-28 C), run engine
1200-1500 rpm for an additional 10 minutes. If winches are going to
be used immediately, only run engine at 1200-1500 RPM for 5
6) Deleted
(7) Run engine at idle for 5 minutes.
(8) Check that OIL PRESS gage (11) reads approximately 25-30 psi (172-207 kPa) at 800-
1000 rpm.
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