TK 55676-19-IM-EN
67
Heater Fuel Pump and Fuel Line Installation
Special Tools Required
Utility Knife
Hose Cutting Tool (204-677)
IImmppoorrttaanntt:: Proper mounting angle of the fuel pump is necessary to allow any air or vapor in the fuel lines to pass
through the pump rather than cause a blockage (Detail’s A and B).
The fuel pump can be installed using either the L-bracket or the fuel tank mounting bracket (both are supplied).
L-Bracket Installation Procedures
1. Choose a protected mounting location close to the fuel pick-up tube and heater.
2. Install the fuel pump into the supplied rubber mounting clamp and attach the L-bracket.
3. Position the fuel pump at a 15 to 35 degree angle with the outlet end facing up (outlet end has connector and
smaller barb fitting) and secure the clamp and bracket. ((DDeettaaiill AA)).
Fuel Tank Bracket Installation Procedures
1. Loosen the fuel pickup tube nut and position the supplied fuel pump bracket under the nut then re-tighten the nut to
16 to 18 ft-lb. (21 to 24 N•m).
NNoottee:: The bracket goes under the nut, not under the washer or rubber gasket.
2. Install the fuel pump into the supplied rubber mounting clamp and attach the rubber clamp to the tank mounted
bracket securely.
Fuel Line Installation Procedures
1. Attach the rubber hose connection to the outlet end of the fuel pump and secure with supplied hose clamp.
2. Route the plastic fuel line (installed earlier on the heater) to the fuel pump and cut to length. Insert the fuel line into
the rubber hose connection until it butts up tight with the fuel pump’s outlet pipe ((DDeettaaiill BB)). Secure with supplied
hose clamp.
• The fuel line must be installed correctly to prevent air bubbles ((DDEETTAAIILL BB)).
• The fuel line from the pickup tube, to fuel pump, to heater should be routed at a continuous rise.
• Only use a hose cutter or utility knife to cut plastic fuel lines. Do not use a wire cutter as this will pinch the plastic
fuel line closed.
3. Attach fuel line from the fuel pick-up supply to the inlet end of the fuel pump and secure with supplied hose clamp.
NNoottee:: The heater fuel pickup supply tube is identified by not having a fitting.
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