TM 5-3895-346-14
OPERATIONS
RUNNING
RUNNING
Oil Pressure
Observe the oil pressure gage immediately after starting the engine. If there is no pressure indicated within 10
to 15 seconds, stop the engine and check the lubricating oil system. The minimum oil pressure should be at
least 18 psi (124 kPa) at 1200 rpm. The oil pressure at normal operating speed should be 40-60 psi (276-414
kPa).
Warm Up
Run the engine at part throttle and no-load for approximately five minutes, allowing it to warm up before
applying a load.
If the unit is operating in a closed room, start the room ventilating fan or open the windows, as weather
conditions permit, so ample air is available for the engine.
Clutch
Do not engage the clutch at engine speeds over 1000 rpm.
Inspection
While the engine is running at operating temperature, check for coolant, fuel, or lubricating oil leaks. Tighten
the line connections where necessary to stop leaks.
Engine Temperature
Normal engine coolant temperature is 160-185 (71-85 ).
F
C
Crankcase
If the engine crankcase was refilled, stop the engine after normal operating temperature has been reached,
allow the oil to drain back into the crankcase for approximately 20 minutes, and check the oil level. Add oil, if
necessary, to bring it to the proper level on the dipstick.
Use only the heavy-duty lubricating oil specified under Lubricating Oil Specifications.
Cooling System
Remove the radiator or heat exchanger tank cap slowly after the engine has reached normal operating
temperature and check the engine coolant level. The coolant level should be near the top of the opening. If
necessary, add clean, soft water or a high boiling point-type antifreeze. (Refer to Engine Coolant).
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