3.6.3 Gauge and Pump Tubing Installation – EL Tank
Install the gauges and tubing
as follows:
The pump fittings
are sealed and leak tested at
the factory. Use a backup
wrench when installing the
gauges and flare fittings to
ensure that you do not turn the
pump fittings and create a
leak.
1. Remove the plugs on
the inlet and outlet tees
(refer to figure). Note:
The pumps are tested
at the factory, so a
small amount of oil may
be present.
2. Using the gasket sealer
provided, install the
pressure gauge on the
outlet tee, and the
combination vacuum/pressure gauge on the inlet tee.
3. Locate the short copper tube assembly. Carefully bend the tube without kinking into
position as shown.
4. Thread (do not tighten) upper 3/8 inch flare nut onto the flare fitting on the fuel pump
inlet.
Do not apply gasket sealer to the flare fittings.
5. Thread lower fitting onto the filter head fitting.
6. Tighten both flare nuts. Use a backup wrench - do not over-tighten.
NOTE:
If your unit is equipped with a “Smart Stat” (black thermostat), there is an additional tee and
vacuum switch on the inlet side of the pump. The wires for the vacuum switch are run directly to the
Smart Stat. The purpose of the vacuum switch is to indicate when the filter is clogged and needs to be
changed.
Fuel Pump Assembly
Filter Head Assembly
3/8” Copper Tube
Inlet Tee
Vacuum
Gauge
Pressure
Gauge
Outlet Tee
Upper Flare
Fitting
Lower Flare
Fitting
Gauge and Suction Tubing Installation.
18
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