2008 6.6L Duramax – FUEL PIPES AND FUEL RAIL INSTALLATION

1. Install the right fuel rail.
NOTE: Refer to Fastener Notice.

2. Install the right fuel rail mounting bolts.
Tighten: Tighten the right fuel rail mounting bolts to 25 N.m (18 lb ft).

3. Install the left fuel rail.
4. Install the left fuel rail mounting bolts.
Tighten: Tighten the left fuel rail mounting bolts to 25 N.m (18 lb ft).

5. Install the injection pipes to the right bank.
Tighten: Tighten the injection pipes to 41 N.m (30 lb it).

6. Install the injection pipes to the left bank.
Tighten: Tighten the injection pipes to 41 N.m (30 lb ft).

7. Install the exhaust gas recirculation (EGR) mounting brackets.
8. Install the EGR mounting bracket bolts.
Tighten: Tighten the EGR mounting bracket bolts to 20 N.m (15 lb it).

9. Install the left fuel rail to pump pipe.
Tighten: Tighten the fuel rail to pump pipe nut to 41 N.m (30 lb ft).

10. Install the coolant pipe.
11. Install the coolant pipe bolt and nut.
Tighten: Tighten the coolant pipe bolt and nut to 25 N.m (18 lb it).

12. Install the distribution block and fuel line assembly.
13. Install the distribution block and fuel line assembly bolts.
Tighten: Tighten the fuel line assembly bolts to 25 N.m (18 lb ft).

14. Connect the fuel hoses to the fuel injector pump.

15. Install the right fuel return hose.

16. Install the left fuel return hose.

20. Install the fuel feed pipe.
21. Install the fuel feed pipe attaching nuts and bolts.
Tighten: Tighten the fuel feed pipe bolts and nut to 25 N.m (18 lb ft).