4-131. HEATER FUEL LINES AND FITTINGS REPLACEMENT (M373A2D AND M373A5).
This Task Covers:
Fuel Pump Line Removal
Fuel Line Removal
e. Fuel Pump Line Installation
Fuel Line Installation
9. Fuel Tank Line Removal
Bulkhead Connector Removal
h. Fuel Tank Line Installation
Bulkhead Connector Installation
Z Power disconnected from heater (TM 5-4520-233-14
ZFuel line replacement:
or TM 5-4520-241-1 4).
- One grommet
- Ten Iockwashers
Z Bulkhead connector replacement:
General mechanic's tool kit
- Two gaskets
Z Drain pan
Fuel pump line replacement:
- Two grommets
Fuel tank line replacement:
- One gasket
- Four Iockwashers
When working on heater fuel lines, the work area must be well-ventilated. Failure to
follow this warning may result in injury to personnel.
Use a drain pan to catch draining fuel. Clean up all spills.
a. FUEL LINE REMOVAL
From underneath semitrailer, disconnect fitting (18) from bulkhead connector (19) and allow fuel to drain.
Inside semitrailer remove nuts (6), Iockwashers (5), bolts (25), and flatwashers (26) from each of three clamps
(27) mounted on brackets (4). Remove fasteners. Discard Iockwashers.
Remove five screws (24) from each plate (23). Remove plates from semitrailer floor (22).
Disconnect fitting (8) from bulkhead connector (19).
Disconnect fitting (2) from heater (1) and remove fuel line (3).
Remove grommet (7) from lower end of fuel line (3). Discard grommet.
FUEL LINE INSTALLATION
Install new grommet (7) on lower end of fuel line (3).
Position fuel line (3) for installation and connect fitting (2) to heater (1).