86
special torque chart (reference only)
FIGURE H: High Pressure Pump and Pump-to-Rail HP Tubes Installation Procedure
Step 1: Install and final torque the high pressure fuel injetion pump to 45 lb/ft (61 Nm).
Step 2: Install the pump cover gasket and make electrical connections between the pump and gasket. Install the pump cover and fasten the bolts.
Step 3: Remove the four plastic caps covering the supply, return, and high pressure rail connectors.
Step 4: Obtain left and right “pump-to-rail” high pressure tubes from the packaging.
Step 5: Position the high pressure tubes between the pump and the rails and fully hand start and seat the tube
nuts onto the mating pump and rails high pressure connections.
Note: Support the tubes while hand snugging the nuts to assure proper assembly of the joints.
Step 6: Snug the tube nuts to 1.5 lb/ft (2 Nm).
Step 7: Torque the pump and rail tube nuts to 106 lb/in (12 Nm +2 / -0).
Step 8: Place a visible mark with a permanent marker on the tube nut and the high pressure fuel rail and the high pressure
fuel injection pump threaded connection. Turn the tube nuts one flat of the nut which is equal to 60 degrees.
FIGURE I: Injector-Pipe-Rail Sub-Assembly Process
Step 1: Place the fuel injectors w/clamps in the head and snug the bolts.
Step 2: Place and snug the fuel rail (leave one thread loose).
Step 3: Place four fuel jumper tubes to injector/fuel rail and start 1-2 threads.
Step 4: Snug injector side tube nuts to 1.5 lb/ft (2 Nm). (Special torque sequence is used, see note below).
Step 5: Snug fuel rail side tube nuts to 1.5 lb/ft (2 Nm). (Special torque sequence is used, see note below).
Step 6: Final torque the fuel rail mounting bolts.
Step 7: Final torque the injector bolts. (Special torque sequence is used, see note below).
Step 8: Final torque the injector side tube nuts to 106 lb/in (12 Nm +2 / -0). (Special torque sequence is used, see note below).
Step 9: Final torque the fuel rail side tube nuts to 106 lb/in (12 Nm +2 / -0). (Special torque sequence is used, see note below).
Step 10: Place a visible mark with a permanent marker on the tube nut and the fuel injector threaded connection. Turn the tube
nuts one flat of the nut which is equal to 60 degrees. (Special torque sequence is used, see note below).
Step 11: Place a visible mark with a permanent marker on the tube nut and the high pressure fuel rail threaded connection. Turn
the tube nuts one flat of the nut which is equal to 60 degrees. (Special torque sequence is used, see note below).
NOTE: Torque the components in the center two cylinders first, then torque the components in the outer two cylinders last.
FIGURE G: HPCR Fuel Components Assembly Procedure
Hand start and hand snug tube nuts.
Step 1: Install injectors, clamps and bolts and hand start the clamp bolts.
Step 2: Rundown the injector clamp bolts to a torque of 1.5 lb/ft (2 Nm). Injectors will seat while torquing the bolts.
Note: The injectors must be fully seated and snugged, but moveable for high pressure connector and HP tube alignment.
Step 3: Install the HP rail and hand start two rail mounting bolts.
Note: Rail must be moveable, but not loose.
Step 4: Remove the four plastic caps from the rail high pressure connectors (HPC’s) and four plastic caps from the injector HPC’s.
Step 5: Obtain four “rail to injector” jumper tubes from the packaging.
Step 6: Position the four (one at a time) between the rail and injectors and fully hand start and seat the tube nuts onto
the mating rail and injector HPC’s. Snug the rail and injector tube nuts using the inside-out step sequence
(i.e. two inside nuts then two outside nuts) with a tube nut click wrench set to 1.5 lb/ft (2 Nm).
Step 7: Final torque the injector clamp bolts to 28 lb/ft (38 Nm).
Step 8: Final torque the two M8 rail bolts to 23 lb/ft (31 Nm).
Step 9: Torque the rail and injector tube nuts to 106 lb/in (12 Nm +2 / -0).
Step 10: Place a visible mark with a permanent marker on the tube nut and the high pressure fuel rail and fuel injector
threaded connection. Turn the tube nuts one flat of the nut which is equal to 60 degrees.
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