Hummer H1 Service Manual page 171

3-34 Fuel, Emissions, and Exhaust
Diesel Injection Pump Fuel Hose or Tube Replacement
Removal
1. Remove supply hose.
2. Remove return hose from injection pump and tube
(Figure 3-45).
3. Remove tube-to-injector hose.
4. Remove injector connecting hoses (Figure 3-46).
5. Remove nozzle cap from rear nozzle nipple.
INJECTOR
RETURN HOSES
CONNECTING
HOSE (TYPICAL)
SUPPLY HOSE
INJECTION PUMP
RETURN TUBE
Figure 3-45: Diesel Fuel Injection Return Hose and Tube Routing
NIPPLE
CAP
Figure 3-46: Injector-To- Injector Return Hose Connection
___________________________________________
Installation
1. Install cap on rear injector nipple (Figure 3-46).
2. Install injector connecting hose.
3. Install tube-to-injector hose (Figure 3-45).
4. Install fuel return hoses on tube and injection pump.
5. Install supply hose.
6. Start engine and check for fuel leaks.
DRAIN RETURN
HOSE
RETURN HOSE
INJECTORS
®