Hummer H1 Service Manual page 170

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FUEL LIFT PUMP SERVICE
Fuel Lift Pump Replacement
Removal
1. Disconnect fuel pump wiring harness (Figure 3-43).
2. Disconnect fuel pump hoses.
3. Loosen clamp and remove pump.
4. Remove adapters and O-rings from fuel pump. Discard O-
rings.
BRACKET
FUEL
PUMP
HOSE
ADAPTER
O-RING
Figure 3-43: Fuel Pump Attachment
Installation
1. Install O-rings and adapters on fuel pump (Figure 3-43).
Use new O-rings.
2. Install fuel pump in clamp and tighten clamp securely.
3. Connect hoses to fuel pump.
4. Connect wiring harness to pump.
5. Start engine and check fuel pump and hoses for leaks.
5745159
WIRING
HARNESS
00-S13-003
ADAPTER
HOSE
CONNECTOR
Fuel, Emissions, and Exhaust
Fuel Tank-To-Filler Neck Hose Replacement
Removal
1. Drain fuel tank.
2. Remove filler tube housing bolts.
3. Disconnect filler tube vent hose.
4. Loosen clamps and remove hose from tank and filler
(Figure 3-44).
TANK
INLET
TUBE
Figure 3-44: Filler Tube-To-Tank Attachment
Installation
1. Install hose on tank and filler tube and tighten hose
clamps.
2. Install filler tube and housing.
3. Fill fuel tank and check for leaks.
3-33
FILLER TUBE
FILLER TUBE
-TO-
TANK HOSE