POWER SYSTEM OPERATION (Contd) - TM-9-2320-272-24-10055

TM-9-2320-272-24-1 Truck 5-Ton 6x6 M939 M939A1 M939A2 Series Trucks (Diesel) Manual
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TM 9-2320-272-24-1

1-21. POWER SYSTEM OPERATION (Contd)

M939A2 SERIES

M939/A1 SERIES

Key

Item and Function

OIL DIPSTICK - Indicates engine oil level.

CRANKCASE BREATHER - Vents hot engine oil fumes from engine and allows fresh air to enter.

ENGINE OIL COOLER - Removes heat from engine oil as coolant circulates through internal tubes

of oil cooler.

OIL FILTER - Filters out foreign particles suspended in oil.

OIL FILLER CAP - Located on rocker lever cover, cap covers engine oil fill opening.

OIL PRESSURE TRANSMITTER - Sends an electrical signal that indicates engine oil pressure to

gauge on instrument panel.

OIL PAN DRAINPLUG - Plugs engine oil drain opening.

OIL PAN - Reservoir for engine oil.

OIL SUPPLY LINE - Carries oil from oil pan to oil pump.

OIL BYPASS RETURN LINE - Returns oil from oil pump to oil pan.

OIL PUMP - Provides mechanical pressurization of oil to circulate it through oil system.

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