TM 5-3805-280-24-2
Engine Tune-Up and Break-In
GENERAL TUNE-UP RECOMMENDATIONS
100
3
As a general rule, an engine tune-up is not necessary if
ALL recommended operator's manual hourly service
procedures are performed on schedule. If your engine
performance is not within the rated application guidelines,
the following service procedures are recommended to
help restore engine to normal operating efficiency.
Operation
Detailed Reference
Change engine oil and filter.
Operator's Manual
Lubricate PTO clutch internal levers and linkage, if equipped.
Operator's Manual
Replace fuel filter and water separator, if equipped.
Group 35/Operator's Manual
Clean crankcase vent tube.
Group 35/Operator's Manual
Check air intake system. Replace air cleaner elements.
This Group/Operator's Manual
Check exhaust system.
This Group
Check and service engine cooling system.
This Group/Operator's Manual
Check and adjust fan and alternator belts. Replace if necessary.
Group 25/Operator's Manual
Check electrical system.
This Group
Check crankshaft vibration damper.
Group 15/Operator's Manual
Inspect turbocharger and check turbocharger boost pressure.
Group 110
Check fuel injection system: Check engine/injection pump timing: check and adjust
Group 35 and 115
speed advance; clean injection nozzles, and adjust opening pressure.
Check engine oil pressure. Correct as necessary.
Group 105
Check engine valve clearance. Adjust if necessary.
Group 05
Check engine speeds. Correct as necessary.
Group 115
Check engine performance on dynamometer.
This Group
RG,100,JW7643 1921NOV971/1
13-466