TM-9-2350-358-BD
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A6
TECHNICAL MANUAL; OPERATOR’S, UNIT, AND DIRECT SUPPORT SUPPORT MAINTENANCE
MARCH 1994
TM-9-2350-358-BD - Page 299 of 343
TM 9-2350-358-BD
14-13. PERSONNEL HEATER FUEL LINE DAMAGED - CONTINUED
9.
Set MASTER power switch to ON.
10.
Set PERSONNEL HEATER switch to ON.
11.
Check fuel flow at output of heater fuel pump.
12.
Set MASTER power switch and PERSONNEL HEATER switch to OFF.
13.
If fuel did not flow from heater fuel pump perform the following steps:
(a)
Carefully remove filter from heater fuel pump and clean filter to remove contaminates Reinsert filter and
repeat steps 9 thru 12.
(b)
If fuel still does not flow, remove and discard filter.
Repeat steps 9 thru 12.
(c)
If fuel still does not flow, replace heater fuel pump and reconnect heater fuel pump outlet tube to heater fuel
pump.
14
If fuel did flow, reconnect fuel pump outlet tube to heater fuel pump.
15.
Remove heater fuel filter outlet tube from heater fuel filter at elbow.
16.
Repeat steps 9 and 10.
17.
Check fuel flow at output of heater fuel filter elbow.
18.
Repeat step 12.
19.
If fuel did not flow from heater fuel filter output elbow perform the following steps.
(a)
Remove fuel filter bowl from fuel filter body, being careful not to damage fuel filter bowl gasket.
Remove fuel
filter from fuel filter bowl and clean filter to remove contaminants.
(b)
Clean old tape from threads of filter bowl and wrap threads with new antiseizing tape.
(c)
Reinsert filter into filter bowl.
Install filter bowl gasket and filter bowl to filter bowl body taking care not to
damage filter bowl gasket.
(d)
Repeat steps 15 through 18.
(e)
If fuel still does not flow, remove filter bowl and discard filter.
Reinstall filter bowl gasket and filter bowl to filter
bowl body taking care not to damage filter bowl gasket.
(f)
Repeat steps 15 thru 18.
(g)
If fuel still does not flow, remove heater fuel pump outlet tube from heater fuel pump and clear blockage from
fuel line tube, elbows, and heater fuel filter body using compressed air.
(h)
Reconnect fuel line tube at heater fuel pump outlet and at heater fuel filter outlet.
20.
If fuel did flow from heater fuel filter output elbow, remove fuel line tube from heater fuel filter to personnel heater
at personnel heater.
21.
Using compressed air, remove any blockage from fuel line tube.
14-8
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