TM 5-3805-280-24-1
Operational Checkout Procedure
ENGINE PARTS LOOSE
Run engine at slow idle.
YES: Operational
OR WORN CHECK
Checkout complete.
Move hydraulic control lever to operate a hydraulic function over relief to put engine
under load.
NO: Go to Abnormal
Engine Noise, in Group
9010-15.
Does engine run smooth, no knocking or rattling noise?
9005
10
11
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3 HYDRAULIC SYSTEM CHECKS
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HYDRAULIC OIL TANK
Raise boom to full height, then lower boom to ground.
YES: Go to next check.
NOTE: Ensure that engine is properly shut down.
CHECK
NO: Replace cap.
Slowly loosen vent plug on hydraulic oil tank.
Is air heard escaping from vent plug?
NOTE: The pressurized oil tank creates pressure at the
T7884AG
UN12NOV92
inlet to the hydraulic pumps. If filler cap does not seal,
hydraulic pumps could cavitate and be damaged.
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NOTE: Ensure that engine is properly shut down.
PUMP GEARBOX OIL
YES: Go to next check.
LEVEL CHECK
Pull dipstick from tube, check oil level.
NO: Add oil if low.
Is oil level between marks?
T8187BB UN08MAR94
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