TM 5-4320-200-13&P
Table 4-2. Maintenance Activity Troubleshooting (Continued).
M A L F U N C T I ON
TEST OR INSPECTION
CORRECTIVE ACTION
Step 4- Check if impeller is damaged.
Replace impeller. (Refer to para 4-4.2)
3. PUMP NOISY.
Step 1- Check if pump mounting hardware is loose.
Tighten pump mounting hardware. (Refer to para 4-4.2)
Step 2- Check if impeller is broken.
Replace impeller shaft. (Refer to para 4-4.2)
Step 3- Check if impeller shaft is defective.
Replace impeller shaft (Refer to para 4-4.2)
4-4.2. Pump.
-
a. Removal.
(1) Gasoline engine disconnect one spark plug lead (1). Electric motor disconnect
power cord (l).
(2) Disassemble pump in numerical sequence as shown in figure 4-7.
4-4.3. Check Valve.
a. Removal.
(1) Refer to figure 4-7. Remove nuts (23) and washers (24), then suction flange (25).
(2) Remove gasket (28), consisting of small weight (27) and large weight (29).
(3) Remove screw (26) separating items (29), (28), and (27).
b. Installation.
Reverse the above procedure.
Change 5
4-13
