Water pump.

TM 10-3930-242-34

c. Water pump.

(f) When repainting the radiator core, use

(1) Remove. R e m o v e t h e w a t e r p u m p ( T M

a thin coat of dull black radiator paint. Ordinary

10-3930-242-12).

oil paints do not transmit heat as well.

(2) Disassembly. Refer to figure 3-13 a n d

(g) Repair or replace a defective radiator.

d i s a s s e m b l e the water pump.

Solder all leaks in the core. Replace all defective

parts.

(3) Cleaning and inspection.

(4) Reassemble. Refer to figure 3-13(1) and

(a) Clean the body, cover, and impeller,

r e a s s e m b l e radiator.

t h o r o u g h l y , using the steam cleaning method or

(5) Testing.

t h e alkaline immersion process P-CA36. After

( a ) If a leak in the radiator can not be

use of the alkaline process, rinse the parts

located, plug the inlet, filler and overflow pipes.

t h o r o u g h l y until they are free of the alkaline

(b) Insert an air hose into outlet pipe and

solution.

p l u g opening.

(b) Clean other parts except the seal and

(c) Immerse the radiator in a vat of water

s h a f t assembly, using cleaning solvent P-D-680

and apply air pressure at 5-10 psi.

o r equal. Dry thoroughly.

(c) Inspect the. body, cover, and hardware

CAUTION

f o r cracks, breaks and other damage.

Do not exceed 10 pounds per square inch,

(d) Replace all defective parts.

as it may damage radiator core.

(4) Reassembly.

(6) Installation. Refer to figure 3-12 and in-

(a) Upon reassembly, use a new seal,

s h a f t assembly, and cover gasket.

stall the radiator.

Figure 3-13. Radiator and water pump, disassembly and

reassembly (sheet 2 of 2).