freightliner FL80 1998 - Page 138

11. Apply a light coat of silicone spray to the gasket
if needed to ease installation, then install the fuel
pump module in the fuel tank.
IMPORTANT: Only use grade 8 capscrews.
NOTE: Use the holes not intended for the
guard bracket.
11.1 Install the fuel pump clamp ring over the
fuel pump module, then install three
5/16–18 grade 8 capscrews and hard-
ened flatwashers to hold it in place. Do
not tighten the capscrews yet.
11.2 Install the fuel pump guard bracket over
the fuel filter/pressure regulator, then fas-
ten it in place with the remaining two cap-
screws and hardened flatwashers.
11.3 Tighten all five capscrews 15 lbf·ft (20
N·m).
12. Connect the fuel lines to the fittings on the fuel
filter/pressure regulator and the rollover valve.
Reconnect the electrical connector.
13. Fill the fuel tank with clean, unleaded gasoline.
14. Connect the batteries, start the engine, and
check for fuel leaks. Also check that the fuel
level gauge is working properly. Correct any fuel
leaks with the engine OFF.
03/03/95
f470136
1
2
3
45
4
6
6
7
1. Fuel Level Float
2. Fuel Gauge Sending Unit
3. Electric Fuel Pump
4. Retaining Tab
5. In-Tank Fuel Filter
6. Mounting Screw
7. Electrical Wiring
Fig. 4, Fuel Pump Module (side view)
03/03/95
f470137
1
2
3
4
5
6
7
1. Fuel Pump Module Gasket
2. Fuel Pump Mounting Clamp Ring
3. Fuel Pump Guard Bracket
4. Clamp Ring Mounting Capscrew
5. Hardened Flatwasher
6. Fuel Tank
7. Fuel Pump Module
Fig. 5, Fuel Pump Module (cutaway view)
Fuel 47
Business Class Trucks Maintenance Manual, January 1998 47/3