TM 10-4510-206-14
Table 4-1.
Operator Troubleshooting Procedures (Cont’d)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6.
PRESSURE GAGE INDICATES PULSATING PRESSURE (CONT’D)
Step. 5.
Check to see if fuel pressure gage is defective.
Replace fuel pressure gage.
7.
FUEL PUMP LEAKS
Step. 1.
Check to see if strainer cover is loose.
Tighten all cover screws.
Step. 2.
Check to see if plugs are loose.
Tighten plugs.
Step. 3.
Check shaft seals for leaks.
Replace fuel pump.
See paragraph 4-14.
Step. 4.
Check fuel pump for cracks.
Replace fuel pump.
See paragraph 4-14.
8.
FUEL PUMP FAILS TO DELIVER FUEL TO BURNER.
Step. 1.
Check fuel supply in fuel container.
Fill fuel container.
Step. 2.
Check suction hose for any leaks.
Tighten suction
hose connections.
Step. 3.
Check to see if pump rotation is reversed.
Interchange any two of the three 208 volt, 3-phase
electrical supply lines from the control box plug to the
load limit switch.
See paragraph 5-7 1.
Step. 4.
Check to see if supply and return fuel hoses are reversed.
Disconnect fuel lines and reconnect in proper place.
Change 4
4-13
