TM 10-7310-281-13&P
MODERN BURNER UNIT (MBU)
0028 00
UNIT MAINTENANCE PROCEDURES
0028 00-2
REPLACE
To replace the fuel line assembly (1), remove the fuel interface fitting (2) as described in WP 0026.
Remove the two nylon snap-it hose clamps from the fuel line (1).
Loosen the 5/8 compression fitting (3) on the fuel line (1) mounted to the elbow fitting (5).
Loosen the union locking nut (7) while holding the union nut (6) with a second wrench.
Loosen the compression fitting (8) while holding the union nut (6) with a second wrench.
Remove the union (9) from the bracket (10).
Make note of the angle at which the ½ elbow fitting (5) is mounted in the fuel tank port (4). Remove the 2
inch elbow fitting (5) from fuel tank port (4). Clean pipe sealer compound residue with rag.
CAUTION!
Do Not Use Teflon Tape.
Teflon Tape is NEVER to be used as a substitute for the approved Pipe Sealer Compound.
Teflon Tape may shred and clog the fuel delivery system of the MBU.
Apply new pipe sealer compound to new elbow fitting (5) and screw in place on fuel tank port (4). Make
sure that elbow is installed at same angle as before removal. Install new fuel line assembly (1) into elbow
fitting and hand tighten compression fitting.
Install the union (9) through the bracket (10) and hand tighten the compression fitting (8) and the union
locking nut (7).
Connect the fuel line (1) to the elbow fitting (5) by hand tightening the compression fitting (3).
Making sure that there is no stress on the fuel line (1) tighten compression and union fittings (3,7).
Install fuel interface QD fitting (2) as described in WP 0026.
