4-1. ENGINE MAINTENANCE
a. S e r v i c i n g .
This task covers checking engine oil, adding engine oil, and
d r a i n i n g a n d r e f i l l i n g e n g i n e o i l. If the engine is new, change engine oil and fil-
ter after first 20 hours of operation. Then, change engine oil after every 150 hours
of operation . If engine operating conditions are severe, with frequent stopping and
starting and high or low engine temperatures, change oil more frequently.
TOOLS: No. 1 Common Organizational Maintenance Tool Kit
Fixed open end wrench set
Torque wrench, 1/2 inch drive
Automotive Mechanics Tool Kit
Socket wrench set, 1/2 inch drive
Container, 5 gallon capacity
MATERIALS/PARTS: Engine oil (refer to current lubrication order)
(Appendix C, item 1)
REFERENCES: LO 5-3805-262-12
PRELIMINARY PROCEDURE: Engine left side panels removed (page 9-14).
ENGINE OIL LEVEL
Turn dipstick handle clockwise several turns then pull up to remove it.
Check that oil level indicated on dipstick is between FULL and ADD marks.
I f o i l l e v e l i s l ow , add just enough oil to raise level to FULL mark on
d i p s t i c k. Dont add too much oil to where oil level is above FULL mark.
Install dipstick and turn handle counterclockwise to tighten.
ENGINE OIL (SHEET 1 OF 2)
Start engine and warm oil (causes wear particles and other contaminants
to be suspended in oil).
Place five gallon container under oil pan drain plug.
Using open end wrench, remove oil pan drain plug and gasket and drain
engine oil into container.
After oil has completely drained, clean drain plug using clean cloth and
check that gasket is not damaged. If gasket is damaged, replace it.
Reinstall drain plug and gasket; tighten drain plug to 18-20 lb-ft.
If necessary, remove and replace engine oil filter (page 4-4).