3.5 Remove the hose from the test port, and
reconnect the gauge to the hose.
3.6 Install the protective plastic cap to the
pressure test port on the fuel rail.
3.7 Install the filler cap on the fuel tank.
4. Disconnect the fuel supply line from the
filter/pressure regulator, then disconnect the
EVAP canister line from the rollover valve. See
Fig. 3.
5. Disconnect the electrical connector.
6. Remove the fuel pump module from the fuel
tank.
6.1 Clean the top of the fuel pump module to
prevent dirt from entering the fuel tank.
6.2 Remove the two capscrews holding the
fuel pump guard bracket in place. Re-
move the guard bracket, capscrews, and
hardened flatwashers.
6.3 Remove the other three capscrews hold-
ing the fuel pump clamp ring in place.
Remove the capscrews and hardened
flatwashers.
6.4 Remove the fuel pump module from the
fuel tank. See Fig. 4.
6.5 Remove the fuel pump module gasket
from the fuel tank (see Fig. 5) and dis-
card the old gasket.
7. Replace the fuel filter.
7.1 Use an appropriate tool to pry back the
retaining tabs. See. Fig. 4.
7.2 Remove the in-tank fuel filter from the
fuel pump module.
7.3 Install the new filter into the retaining tabs
until the filter is firmly seated.
8. Check that the sensing unit, electrical wires,
float, and in-tank fuel filter are properly installed.
9. Install a new fuel pump module gasket in the
opening of the fuel tank.
10. Position the fuel pump module in the orifice on
top of the fuel tank. Check that the fuel
filter/pressure regulator is facing the frame rail.
See Fig. 3.
03/16/95
f010913
2
1
3
1. Fuel Pressure Test Port
2. Test Hose
3. Approved Gasoline Can
Fig. 2, Relieving Fuel Pressure
03/17/95
f470135
4
5
6
7
8
9
10
1
2
3
1. Fuel Filter/Pressure Regulator
2. Fuel Pump Guard Bracket
3. Fuel Pump/Gauge Electrical Connector
4. Pressure Relief/Rollover Valve
5. Clamp Ring Mounting Capscrew
6. Hardened Flatwasher
7. Rollover Valve Grommet
8. EVAP Canister Connection
9. Fuel Supply Line Connection
10. Fuel Pump Mounting Clamp Ring
Fig. 3, Fuel Pump Module (top view)
Fuel47
Business Class Trucks Maintenance Manual, January 199847/2
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