TM 5-4520-253-13
l N S P E C T / R E P A I R / R E M O V E / l N S T A L L F U E L L I N E S A N D F I T T I N G S ( C O N T)
3.
4.
5.
6.
7.
8.
9.
10.
Remove fuel line (5) by loosening nuts at male elbow (6) of carburetor (3) and male connector
(7).
Remove two screws (8) and lock washers (9) and pull FUEL INLET bulkhead fitting (10) out of
mounting hole from inside heater case.
Fuel filter (11) is attached.
Bottom screw (8) also retains cap plug (13) and FUEL INLET tag (14). Carefully retain these
parts for reassembly.
Remove two screws (15) and lock washers (16) and pull FUEL OVERFLOW bulkhead fitting (17)
out of mounting hole from inside heater case.
Bottom screw (15) also retains cap plug (18) and FUEL OVERFLOW tag (19). Carefully retain
these parts for reassembly.
Disassemble FUEL INLET bulkhead fitting (10), fuel filter (11), nipple (12), and male elbow (4).
Disassemble FUEL OVERFLOW bulkhead fitting (17) and male connector (7).
With fuel lines and fittings disassembled, inspect fittings for stripped or crossed threads and other
damage. Replace damaged or defective fittings.
INSTALLATION:
1.
2.
3.
4.
5.
6.
7.
Assemble FUEL OVERFLOW bulkhead fitting (17) and male connector (7).
Assemble FUEL INLET bulkhead fitting (10), fuel filter (11), nipple (12), and male elbow (4).
Install FUEL OVERFLOW bulkhead fitting (17) in mounting hole from inside heater case and
secure with two screws (15) and lock washers (16). Bottom screw (15) also secures cap plug (18)
and FUEL OVERFLOW tag (19). Place tag between lock washer (16) and heater case. Fasten
cap plug (18) between lock washer (16) and screw (15).
Install FUEL INLET bulkhead fitting (10) in mounting hole from inside heater case and secure
with two screws (8) and lock washers (9). Bottom screw (8) also secures cap plug (13) and FUEL
INLET tag (14). Place tag between lock washer (9) and heater case. Fasten cap plug (13) between
lock washer (9) and screw (8).
Install fuel line (5) in male elbow (6) of carburetor (3) and male connector (7). Secure by
tightening nuts of fittings.
Install fuel line (1) in male elbow (2) of carburetor (3) and male elbow (4), Secure by tightening
nuts of fittings.
Open shutoff valve at fuel container if heater is to be used.
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