1. HYDRAULIC SYSTEM OIL.
At operating temperature, hydraulic oil is hot. Allow hydraulic oil to cool before servicing hydrau-
lic system. Failure to do so could result in injury.
Hydraulic fluid is very slippery. Immediately wipe up any spills. Failure to follow this warning may
result in injury to personnel.
Boom must be fully lowered and retracted, and truck on level ground before checking hydraulic oil
level in reservoir. Engine should be stopped at least five minutes.
Check hydraulic oil in oil level sight gage.
If hydraulic oil is visible in sight gage, level is okay.
If level is low, add hydraulic oil as follows: Use 24 mm hydraulic reservoir tool (TM 10-3930-675-10, Basic
Issue Items) to remove plug at fill opening. Add oil thru fill opening until level is visible in sight gage. Rein-
Replace hydraulic system oil as directed by AOAP oil sampling.
If engine has been running, shut down engine and wait 10 minutes for oil to drain down into engine oil pan
Remove oil level gage (dipstick), clean, and reinstall.
Remove and check oil level at least two times. Oil level should be within cross hatched area at end of dip-
If level is low, add engine oil as follows: Remove cap from engine oil fill tube. Add oil thru tube until level
on dipstick is within cross hatched area at end of dipstick. Reinstall cap on engine oil fill tube.
ENGINE OIL AND FILTER. Replace engine oil and oil filter after the first 100 hours of operation, thereafter
every 300 hours of operation. Drain oil when engine is warm. Dispose of used oil properly.
ENGINE COOLANT LEVEL CHECK.
DO NOT service cooling system unless engine has been allowed to cool down. DO NOT remove
radiator cap. This is a pressurized cooling system and escaping steam or hot coolant will cause seri-
Always shut down engine before checking, adding or draining coolant.
Check engine coolant level in radiator expansion tank. Level should be above the MIN mark. Add coolant to
expansion tank if level is below the MIN mark.
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