TM 9-2320-280-20-3
11-193. HEATER FUEL LINES REPLACEMENT (Cont’d)
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c. Shutoff Valve Replacement
1. Disconnect cab fuel line (1) from shutoff valve (2) and allow fuel to drain.
2. Close shutoff valve (2), disconnect “B” beam fuel line (3) from shutoff valve (2), and remove shutoff
valve (2).
3. Connect “B” beam fuel line (3) to shutoff valve (2).
4. Connect cab fuel line (1) to shutoff valve (2) and open valve (2).
d. “B” Beam Fuel Line Replacement
L Close shutoff valve (2) and disconnect fuel line (3) from shutoff valve (2).
2. Disconnect fuel line (3) from filter (6), allow fuel to drain, and remove fuel line (3).
3. Connect fuel line (3) between “B” beam (5) and seal (4) and connect to filter (6).
4. Connect fuel line (3) to shutoff valve (2) and open valve (2).
e. Filter Fuel Line Replacement
1. Disconnect fuel line (7) from filter (6) and allow fuel to drain.
2. Disconnect fuel line (7) from bulkhead connector (13).
3. Connect fuel line (7) to bulkhead connector (13).
4. Connect fuel line (7) to filter (6).
f. Bulkhead Coupling Replacement
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Remove fuel tank (para. 3-24).
Disconnect filter fuel line (7) from bulkhead connector (13) and allow fuel to drain.
Disconnect bulkhead fuel line (8) from elbow (9).
Remove elbow (9) from coupling half (12).
Remove coupling nut (10), washer (11), and coupling half (12) from tunnel (14).
Remove bulkhead connector (13) from coupling half (12).
Install bulkhead connector (13) on coupling half (12).
Install coupling half (12) to tunnel (14) with washer (11) and coupling nut (10).
Install elbow (9) on coupling half (12).
Connect bulkhead fuel line (8) to elbow (9).
Connect filter fuel line (7) to bulkhead connector (13).
Install fuel tank (para. 3-24).
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