Tech-
nical
Service
inspec-
tion
Monthly Weekly
ENGINE AND ACCESSORIES-Continued
all mounting bolts and connections are tight. Protect the coolant from freezing, and
record its freezing point in DA Form 464.
Water pump, fan, and shroud. Inspect the water pump for leaks and for loose mounting
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and assembly bolts. Check the condition and mounting of the fan blades and
shroud.
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Tighten or replace loose or missing bolts and screws. If the pump leaks, tighten the
packing nut only enough to stop the leak. Repack if necessary.
Bells and pulleys. Inspect for excessively worn, cracked, or frayed belt. Check the belt
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tension and condition and alinement of pulleys. Belts are properly adjusted when
they can be deflected 1 inch from their normal positions, at a point midway between
the pulleys.
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Adjust tension of the belts if necessary (par. 130). Replace belts if frayed or badly
worn. Replace all belts in sets. Never install new belts with worn pulleys or new
pulleys with worn or frayed belts.
Governor and linkage. Check the governor adjustment. If the engine surges when
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running at top speed without load, the governor is out of adjustment.
Adjust the governor if necessary (par. 108c).
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FUEL SYSTEM
Carburetor and linkage. See that all carburetor mounting and assembly bolts and
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screws are in place and secure. Check the condition and operation of linkage.
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Tighten any loose mounting and assembly bolts and screws. Replace excessively worn
or damaged linkage connections.
Filters. See that their mountings are secure. Check for loose screws and faulty
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gaskets. Inspect for fuel leaks.
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Tighten any loose mounting screws. Remove and clean sediment and water out of the
bowl. Replace the gasket if worn.
Air cleaner. Inspect for loose connections. Check the condition and level of oil in the
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bowl.
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Service the air cleaner as specified in LO 5-1185. Make sure there are no air leaks
between the air cleaner and carburetor.
Fuel, lank, cap, and gaskets. Inspect the condition and mounting of the fuel tank.
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Check the tank, fuel lines, feed valves, and connections for leaks.
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See that the tank is securely mounted with its air vent open and filler cap clean and tight
fitting. Repair or renew leaky or damaged fuel lines.
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