CARBURETOR ADJUSTMENT.

TM 10-3930-623-34

2. Apply low pressure (25 psi maximum)

compressed air to all passages to check for obstructions.

Check venturi for damage and distortion.

Discard

damaged or defective venturi.

3. Check springs, retainers, washers, and all

attaching parts for wear, stripped threads, distortion, and

other damage. Discard defective parts.

7-19.

CARBURETOR ADJUSTMENT.

7-23. WATER PUMP, INSPECTION. (See figure 7-4).

Refer to TM 10-3930-623-12.

Complete inspection requires checking the pump both

assembled and disassembled. Proceed as follows:

1. With pump disassembled, inspect all metal parts

for corrosion.

2. Check

shaft

seals

(11,

figure

7-4)

for

deterioration.

3. Check mating surfaces of cover (5) and body

(13) for cleanliness and freedom from warpage.

7-20. FUEL PUMP INSPECTION.

Refer to TM 10-3930-623-12.

4. Check shaft and bearing (8) for smoothness of

machined surfaces and free operation of bearing without

looseness. Check hub and pulley (1) for alignment of

pulley groove.

5. Check for leaks after assembly while operating.

7-21. FUEL PUMP BEFORE INSTALLATION TESTS.

Refer to TM 10-3930-623-12.

7-24.

STARTING MOTOR FIELD

WINDINGS

INSPECTION AND TEST.

1. Examine field windings (47, figure 4-21) for

worn, burned, or frayed insulation. Replace defective

windings. Check for secure connections.

2. Check terminal screw for burning and crossed or

stripped threads.

Discard damaged bushing and

insulation washers. Discard bent dowel pin. Check

housing (49) for cracks and damage. Discard defective

housing.

3. Use a conventional test light to check field

windings for grounds to frame and open circuits in coils.

7-22. FUEL PUMP AFTER INSTALLATION TESTS.

Refer to TM 10-3930-623-12.

7-25. STARTING MOTOR COMMUTATOR END BELL

INSPECTION.

1. Discard oil soaked brushes or excessively worn

brushes.

7-9