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INSPECTION—PUSHRODS
Inspect the pushrod ball and socket for signs of scor-
ing. Check for cracks where the ball and the socket
are pressed into the tube.
Roll the pushrod on a flat work surface with the socket
end hanging off the edge. Replace any pushrod that
appears to be bent.
INSTALLATION
WARNING: THE OUTSIDE EDGE OF THE HEAD
GASKET IS VERY SHARP. WHEN HANDLING THE
NEW HEAD GASKET, USE CARE NOT TO INJURE
YOURSELF.
1. Install a new gasket with the part number side up,
and locate the gasket over the dowel sleeves.
2. Using an engine lifting crane, lower the cylinder
head onto the engine.
3. Lightly lubricate head bolts under bolt head and on
threads, with engine oil and install. Using the
sequence shown , tighten bolts in the following
steps:
a. Torqueboltsto70Nꞏm(52ft.lbs.).
b. Back off 360 degrees in sequence.
c. Torque bolts to 105 Nꞏm (77 ft. lbs.).
d. Re-check all bolts to 105 Nꞏm (77 ft. lbs.).
e. Tighten all bolts an additional
1⁄4turn (90°).
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4. Install push rods into their original locations.Ve r i f y
that they are seated in the tappets.
5. Inspect rocker housing gasket for cuts and proper installation into groove. Replace if damaged.
6. Install rocker housing and bolts. Tighten to 24 Nꞏm (18 lb. ft.).
7. Install fuel injector (Refer to 14 - FUEL SYSTEM/FUEL INJECTION/FUEL INJECTOR - INSTALLATION).
8. Lubricate valve stem tips and install the cross-
heads in their original locations.
9. Lubricate the rocker arms (1) and pedestals (2)
and install them in their original locations. Install
the bolts and torque them to 36 Nꞏm (27 ft. lbs.).
10. Verify that the valve lash settings are maintained
(Refer to 9 - ENGINE/CYLINDER HEAD/INTAKE/
EXHAUST VALVES & SEATS - STANDARD
PROCEDURE).
11. Install cylinder head cover gasket onto rocker housing.
12. Install injector harness nuts. Tighten to 1.25 Nꞏm (11 in. lbs.).
13. Connect injector harness connectors at cylinder head cover gasket.
14. Install wire harness P-clip to cylinder head behind filter housing 24 Nꞏm (18 ft. lbs.).
15. Connect the IAT/MAP sensor connector.
16. Install the fuel filter housing assembly and hand tighten mounting bolts, Do not torque at this time.
17. Connect WIF sensor, and fuel heater.
CAUTION: Failure to follow procedure will result in fuel leaks and/or fuelsystem failure.
18.Install the fuel rail and high pressure fuel lines as follows:
a. Hand tighten fuel rail bolts.
b. Hand tighten fuel drain line to pressure limiting valve. Hand tighten banjo bolt at fuel filter housing.
c. Hand tighten fuel rail-to-cylinder head high pressure fuel lines.
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d. Install fuel line brace bolts-to-intake manifold finger tight for fuellines#2thru#5.
e. Install fuel line brace nut to rear lift bracket stud, finger tight, for fuel line #6.
f. Hand tighten fuel pump to fuel rail line.
g. Torque fuel line nuts at cylinder head to 30 Nꞏm ( 22 ft. lbs.).
h. Torque fuel line nuts at fuel rail to 30 Nꞏm (22 ft. lbs.)
i. Usingabackupwrench,torquefuelpumptofuelraillineto37Nꞏm(27ft.lbs.). At injection pump.
j. Torque fuel pump to fuel rail line to 37 Nꞏm (27 ft. lbs.) at fuel rail.
k. Torque fuel drain banjo bolt at pressure limiting valve and front of fuelfilter housing to 24 Nꞏm (18 ft. lbs.).
l. Torque fuel line brace bolts to 24 Nꞏm (18 ft. lbs.).
m. Torque fuel line brace nut to 24 Nꞏm (18 ft. lbs.).
n. Torque rail bolts to 24 Nꞏm (18 ft. lbs.).
o. Connect fuel pressure sensor.
p. Torque fuel filter mounting bolts to 24 Nꞏm (18 ft. lbs.).
19. Reposition number 6 fuel line shield and torque to 43 Nꞏm (32 ft. lbs.).
20. Install the fuel filter to injection pump low pressure line. Inspect and replace sealing washers if necessary.
Torque banjo bolts to 24 Nꞏm (18 ft. lbs.).
21. Connect fuel return line at back of cylinder head hand tight.
22. Connect fuel return line at filter housing hand tight.
23. Torque banjo connections at cylinder head and fuel filter housing to 24Nꞏm (18 ft. lbs.)
24. Install bracket to rear of filter housing. Torque to 24 Nꞏm (18 ft. lbs.).
25. Using new gaskets, install the intake grid heater and air inlet housing. Torque bolts to 24 Nꞏm (18 ft. lbs.).
26. Install wire harness P-clip and push on clip to air inlet housing.
27. Connect engine oil level indicator tube at fuel filter housing and at air inlet housing.
28. Install the charge air cooler-to-air inlet housing duct assembly. Torque all clamps to 11 Nꞏm (100 in. lbs.).
29. Connect intake grid heater wires.
30. Secure engine harness to front of cylinder head with bolt at four locations.
31. Connect engine coolant temperature sensor connector.
32. Connect radiator upper hose to thermostat housing.
33. Rotate generator into position. Install upper bolt and torque upper and lower bolts.
34. Install wire harness push-on clip below bracket.
35. Install wire harness P-clip to top of bracket.
36. Install fan support and torque to 32 Nꞏm (24 ft. lbs.).
37. Install cooling fan/drive refer to (Refer to 7 - COOLING/ENGINE/RADIATOR FAN - INSTALLATION).
38. Install accessory drive belt (Refer to 7 - COOLING/ACCESSORY DRIVE/DRIVE BELTS - INSTALLATION).
39. Install exhaust manifold/turbocharger assembly, using new gaskets.Start all bolts/spacers by hand. Starting
from the center bolts out, Torque bolts to 43 Nꞏm (32 ft. lbs.), then retorque from the center out again.
40. Install exhaust manifold heat shield to exhaust manifold studs. Install retaining nuts.Torque to 24 Nꞏm (18 ft.
lbs.).
41. Install exhaust bolt retention straps across cylinders 5 & 6.
42. Using a new gasket, connect the turbocharger oil drain tube. Torque to 24Nꞏm(18ft.lbs.).
43. Perform the turbocharger pre-lube procedure. (Refer to 11 - EXHAUST SYSTEM/TURBOCHARGER SYSTEM/
TURBOCHARGER - INSTALLATION)
44. Connect the turbocharger oil supply line. Torque to 24 Nꞏm (18 ft. lbs.).
45. Install air cleaner housing and duct.
46. Connect air inlet temperature/pressure sensor.
47. Raise vehicle on hoist.
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NOTE: Do not reuse the clamp for the exhaust pipe to turbocharger elbow connection.
48. Install the exhaust pipe to turbocharger elbow using a new clamp. Torque bolts to 11 Nꞏm (100 in. lbs.).
49. Lower vehicle.
50. Fill engine coolant (Refer to 7 - COOLING - STANDARD PROCEDURE).
51. Start engine and check for leaks.
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COVER - CYLINDER HEAD
REMOVAL
REMOVAL - ROCKER HOUSING
1. Remove cylinder head cover. (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) - INSTAL-
LATION)
2. Remove injector harness nuts from injectors.
3. Remove cylinder head cover gasket. (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) -
INSTALLATION)
4. Remove rocker housing bolts.
5. Remove rocker housing and gasket.
REMOVAL - CYL HEAD COVER
1. Disconnect both negative battery cables.
2. Disconnect the breather tube (3) and breather drain
tube (4) from the cylinder head cover.
3. Remove the cylinder head cover bolts.
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4. Remove the cylinder head cover (1).
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REMOVAL - CYL HEAD COVER GASKET
1. Remove cylinder head cover.
2. Disconnect injector harness connectors (3) at cylinder head cover gasket.
3. Remove injector solenoid nuts (1) at injectors.
4. Remove cylinder headcover gasket (2).
CLEANING
CLEANING CYLINDER HEAD COVER
Using a suitable solvent, Clean and dry gasket mating surfaces on cylinderhead and rocker housing. Wipe gasket
dry and inspect for re-use.
INSPECTION - CYLINDER HEAD COVER
The cylinder head cover gasket and rocker housing gasket, are reusable.However, should cracks, nicks, or
tears be present in the rubber/silicone construction, the defective components should be replaced. Also replace gas-
ket if it is no longer flexible. Inspect cylinder head cover rubber isolated capscrews for cracks, nicks, or tears.Do not
reuse gasket if it has been removed from the groove in the rocker housing or cylinder head cover.
INSTALLATION
INSTALLATION - ROCKER HOUSING
1. Inspect rocker housing gasket for cuts, nicks, or tears. Replace if damagedorifgaskethascomeoutofgroove.
2. Inspect rocker housing gasket for proper installation in groove. Gasket bead must be centered in groove. A gas-
ket bead that is tilted to the side will cause an oil leak.
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CAUTION: When installing rocker housing onto cylinder head, do not slide housing from side to side, The
gasket could fall out or be damaged.
3. Install the rocker housing. Carefully guide the rocker housing evenly down onto the cylinder head.
4. Install rocker housing bolts and tighten finger tight.
5. Torque bolts, working from center out, to 24 Nꞏm (18 ft. lbs.).
INSTALLATION - CYL HEAD COVER
NOTE: Gasket must be completely dry and free of oil before installation.
1. Position cylinder head cover (1) on top of cylinder head cover gasket (2).
2. Install bolts finger tight.