Table I. Maintenance Indicator Checklist-Continued.

TM 10-3930-222-20

Table I. Maintenance Indicator Checklist-Continued.

Item

Interval

Par.

No.

Procedure

ref.

PRELIMINARY SERVICES

Transmission Oil Filter and Lines.

Inspect filter and lines for cracks, breaks, secure mounting, and

leaks.

Engine Oil Filter Assembly and Lines.

Inspect filter and lines for cracks, breaks, secure mountin and

19, 20

leaks.

Carburetor, Choke Control, Throttle, Governor, and Iinkages.

a. Inspect carburetor for secure mounting and leaks.

b. Make sure that choke valve opens fully in the released position

and that the throttle valve opens fully when the pedal is depressed.

c. Inspect governor for secure mounting, leaks, and seal.

d. Inspect linkages, springs, and mountings for wear, breaks,

and other damage.

Fuel Pump, Fuel Tank, and Lines.

a. Inspect fuel pump assembly for cracks, breaks, secure mount-

ing, and leaks. Clean bowl assembly.

b. Inspect fuel tank and lines for leaks, secure mounting, and

clogged vent in fillercap. Drain fuel tank if there is evidence of

contamination. Recheck for leaks.

Muffler.

Inspect muffler for breaks, leakage, rust, and secure mounting.

Cylinder Head, Manifolds, and Gaskets.

a. Inspect cylinder head and gasket for evidence of oil or water

leaks. Torque loose cylinder head nuts to 35 to 40 ft.-lb.

b. Inspect manifolds for warping, cracks, breaks, damaged gaskets,

and secure mounting.

Radiator and Hoses.

a. Inspect radiator for secure mounting, leaks, bent fins, and

obstructions in the air passages.

b. Inspect hoses for deterioration and replace a cracked or soft

hose. Be sure hose clamps are tight.

Water Pump and Fan.

a. Inspect water pump body for cracks, breaks, or leaks and for

secure mounting.

b. If seals leak, replace water pump.

c. Inspect fan for secure mounting and bent or broken blades.

v-belts and Pulleys.

a. Inspect fan and generator v-belt for frayed condition, wear,

glazing, and deterioration.

b. Check pulleys for secure mounting and breaks.

c. Adjust v-belt to allow 1/2-inch finger-pressure deflection midway

between pulleys.

Air Cleaner and Hose.

a. Inspect air cleaner for secure mounting.

b. Inspect hose for deterioration and clamps for tightness.

Spark Plugs.

Inspect installed spark plugs for cleanness, cracks, and leaks.

Ignition Wiring.

a. Inspect all accessible wiring for cleanness, damage to insula-

tion, and good connections.

b. Tighten wiring connectors only if they are loose because over-

tightening will damage connectors.