Hummer H1 Service Manual page 129

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2-92 Engine
FUEL INJECTOR LINE INSTALLATION
1. Flush injector lines with fresh diesel fuel and compressed air.
2. Attach fuel lines to injectors and pump. Verify line routing
and connection (Figures 2-183 and 2-184).
3. Tighten fuel line fittings at injectors and at pump to 19 lb-
ft (25 N•m) torque.
4. Install clips on injector lines (if removed).
5. Attach injector line clips to rocker covers.
6. Install boot over injection line fittings at pump.
CYL NO. 8
CYL NO. 6
CYL NO. 4
CYL NO. 2
Figure 2-183: Fuel Injector Line Layout
CYL NO. 8
CYL NO. 1
CYL NO. 3
CYL NO. 4
Figure 2-184: Fuel Connections at Pump
WATER CROSSOVER INSTALLATION
1. Apply Permatex #2 to crossover gaskets and position gas-
kets on cylinder heads (Figure 2-185).
2. If new crossover is being installed, transfer hose fittings to
new crossover. Use Loctite PST on fitting threads.
3. Connect bypass hose to water pump (Figure 2-185).
4. Install crossover. Tighten cross-to-cylinder head bolts/
studs to 25-37 lb-ft (34-50 N•m).
5. Connect bypass hose to crossover hose fittings on
crossover (Figure 2-185).
6. Install thermostat, gasket and housing on water crossover.
CYL NO. 7
Apply Permatex #2 to gasket before installation and
tighten housing bolts to 31 lb-ft (42 N•m) torque.
CYL NO. 5
CYL NO. 3
CYL NO. 1
GASKET
CYL NO. 7
CYL NO. 2
CYL NO. 6
CYL NO. 5
EXHAUST MANIFOLD INSTALLATION
1. Position gasket on manifold. Then insert 1-2 bolts through
manifold to hold gasket in place.
2. Install manifold attaching bolts finger tight.
3. Verify that gaskets are properly aligned. Tighten manifold
bolts to 18-25 lb-ft (24-34 N•m) torque.
CROSSOVER
Figure 2-185: Water Crossover Installation
WATER
GASKET
BYPASS HOSE
®