TM 5-3895-346-14
PREVENTATIVE MAINTENANCE
ENGINE OVERHAUL
(nonvehicle engines). Select the proper coolant filter element in accordance with the instructions given in
Coolant Specifications. Use a new filter cover gasket when installing the filter element. After replacing the filter
and cover gasket, start the engine and check for leaks.
Item 13 Starting Motor
VEHICLE ENGINES
Starting motors which are provided with lubrication fittings (grease cups, hinge cap oilers or oil tubes sealed
with pipe plugs) should be lubricated every 6 months or 10,000 miles. Add 8 to 10 drops of oil, of the same
grade as used in the engine, to hinge cap oilers; if sealed tubes are provided, remove the pipe plugs, add oil
and reseal the tubes. Grease cups should be turned down one turn. Refill the grease cups, if necessary.
However, some starting motors do not require lubrication except during overhaul.
NONVEHICLE ENGINES
The electrical starting motor is lubricated at the time of original assembly. Oil can be added to the oil wicks,
which project through each bushing and contact the armature shaft, by removing the pipe plugs on the outside
of the motor. The wicks should be lubricated whenever the starting motor is taken off the engine or
disassembled.
The Sprag overrunning-clutch drive mechanism should be lubricated with a few drops of light engine oil
whenever the starting motor is overhauled.
Item 14 Air System
Check all of the connections in the air system to be sure they are tight. Check all hoses for punctures or other
damage and replace, if necessary.
Figure 7. Item 13
Item 15 Exhaust System
Check the exhaust manifold retaining nuts, exhaust flange clamp, and other connections for tightness. Check
for proper operation of the exhaust pipe rain cap, if one is used.
Item 16 Air Box Drain Tubes
With the engine running, check for flow of air from the air box drain tubes every 18 months or 30,000 miles
(1000 hours). If the tubes are clogged, remove, clean, and reinstall the tubes. The air box drain tubes should be
cleaned periodically even though a clogged condition is not apparent.
If the engine is equipped with an air box drain tank, drain the sediment periodically.
Item 17 Emergency Shutdown
With the engine running at idle speed, check the operation of the emergency shutdown every 12 months or
20,000 miles. Reset the air shutdown valve in the open position after the check has been made.
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