TM 10-3510-220-24
Table 2-2. Unit Troubleshooting (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5.
WATER HEATER FUEL PUMP IS NOISY. (Cont)
Step 3.
Check for clogged fuel pump strainer.
a .
If fuel pump strainer is clogged, clean fuel pump strainer. Refer to
paragraph 2-39.
b .
If strainer is clean, proceed to next step.
Step 4.
Check for clogged fuel filter.
a.
If filter is clogged, remove and replace fuel filter. Refer to paragraph 2-41.
b .
If filter is clean, proceed to next step.
Step 5.
Check for overheating of fuel pump.
a.
If fuel pump is too hot to touch, replace fuel pump. Refer to paragraph 2-39.
b .
If fuel pump is not overheated and problem persists, notify your supervisor.
6.
WATER HEATER PRESSURE GAGE INDICATES PULSATING PRESSURE.
Step 1.
Step 2.
Step 3.
Check for air leaks in suction hose and for loose connections.
a.
If suction hoses are cracked, replace hoses. Refer to paragraph 2-35.
b.
If hose connections are loose, tighten suction hose connections.
Refer to TM 10-3510-220-10.
c.
If hoses and connections are serviceable, proceed to next step.
Check for clogged fuel pump strainer.
a.
If fuel pump strainer is clogged, clean or replace strainer.
Refer to paragraph 2-39.
b .
If strainer is clean, proceed to next step.
Check for clogged fuel filter.
a.
If fuel filter is clogged, remove and replace filter. Refer to paragraph 2-41.
b.
If filter is clean, proceed to next step.
2-18
