Fuel Pump Removal And Installation - PREVOST H3-41 Maintenance Manual

SECTION 03 : FUEL SYSTEM
9. Ensure the filter spring is installed at the top
of the clear cover. If missing, the spring must
be replaced to insure proper filter operation.
10. After ensuring the seal is properly positioned
at the base of the clear cover, install it with
the collar onto the fuel processor. Apply
downward pressure to the top of the clear
cover and then tighten the collar by hand until
secured;
11. Fill the clear cover with clean diesel fuel until
it reaches the top of the filter through spin off
vent cap located on top of clear cover.
12. Install vent cap seal and then reinstall the cap
and tighten by hand until it clicks;
13. Open the shut-off valve;
14. Start engine, raise rpm for 2-3 minutes, hand
tighten collar again.
15. After the air is purged and with the engine still
running, slowly loosen the vent cap on the
filter cover. The fuel level in the cover will
start falling. When the fuel level falls to about
one inch above the top of the collar, tighten
the vent cap quickly by hand.
16. Shut down the engine and hand-tighten the
collar again.
ENVIRONMENTAL NOTICE
Diesel fuel is an environmentally hazardous
product. Dispose in an environmentally friendly
manner.
10
PA1621 Maintenance Manual All Series | Revised May 2018
FIGURE 8: DAVCO FUEL PRO 382
2.5 FUEL PUMP REMOVAL AND
INSTALLATION
The pump is located underneath the air
compressor and is accessible through the engine
compartment R.H. access door.
To remove the pump, proceed as follows:
Clean around the fuel pump and fuel lines.

Position a container to catch any fuel that
might drain from the pump or lines.
Remove the fuel pump.

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