Hummer H1 (2006+). Instruction - page 36

2-50

Engine

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23. Remove the power steering pump and the mounting bracket, without removing the hoses, tie the pump over to the side (Refer

to section 8).

24. Remove the A/C compressor (Refer to section 11).

25. Install lifting bracket EN-47923 on the A/C compressor mounting bracket with the lift eyelet towards the passenger side of the

engine.

26. Disconnect the main engine electrical harness connectors (Refer to section 12).

27. Remove the transmission control harness and tray from the engine (Refer to section 12).

28. Remove the starter (Refer to section 12).

29. Remove the six torque convertor bolts through the starter opening and mark the flywheel and torque converter relationship for

assembly purposes.

30. Remove the exhaust down pipe from the turbocharger (Refer to section 3).

31. Support the engine and the transmission, disconnect the right and left engine mount to frame bracket bolts.

32. Remove the left engine mount bracket from the frame rail (Refer to section 2).

33. Remove the bolts retaining the engine to the transmission.

34. Raise and remove the engine using a floor jack to keep the rear of the engine at the proper angle to guide it out of the engine

bay.

ENGINE INSTALLATION

1.

If new engine is being installed, transfer mounting brackets and insulators, generator, drive plate (flywheel), turbocharger and
necessary mounting brackets, shields, damper pulleys, sensors and fittings, from the old to the new engine.

2.

Attach lifting bracket EN-47923 to the engine.

3.

Attach a hoist to the lifting bracket. Raise the engine and guide it into the engine bay with the aid of a helper using a floor jack
to keep the rear of the engine at the proper angle to guide it in to the engine bay.

WARNING: Do not draw the engine to the transmission using the transmission bolts. If everything is aligned prop-
erly the engine and transmission will come together.

4.

Align and seat the engine on the transmission. Be sure the converter pilot hub is seated in the crankshaft and the transmission
is seated on the engine block dowels. Install 2-3 transmission attaching bolts (finger tight) to hold the engine and transmission
in place.

5.

Install the left engine mount bracket to the frame rail and torque to 55þlb-ft. (75þN·m).

6.

Install the engine mount to the frame bracket bolts and torque to 50þlb-ft. (65þN·m).

7.

Install all the transmission to engine bolts and torque to 37þlb-ft. (50þN·m).

8.

Install the torque convertor bolts and torque to 44þlb-ft. (60þN·m).

9.

Install the exhaust down pipe to the turbocharger.

10. Install the starter.

11. Install the transmission control harness and tray to the engine.

12. Install the main engine electrical harness connectors.

13. Remove the lifting bracket EN-47923 and install the A/C compressor.

14. Install the power steering pump and the mounting bracket.

15. Install the serpentine belt and the serpentine belt tensioner.

16. Install the vane position sensor to the turbocharger using Snap-on wrench RX32A or equivalent.

17. Install the CTIS compressor.

18. Install the front propeller shaft.

19. Install the center driveline protection.

20. Install the engine cover.

21. Install the air inlet hose from the air cleaner to the turbo intake tube.

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Engine 2-51

5745804

22. Install the surge tank to the right air lift bracket and install the coolant hoses from the radiator and lower radiator hose to the

surge tank.

23. Install the cooling fan, fan drive assembly and the upper portion of the front, rear crossmember as an assembly.

24. With the help of an assistant, install the cool pack assembly on the vehicle (Figure 2-44). Install the radiator support bracket

bolts and the lower radiator mount.

25. Install the charged air hose from the charged air cooler outlet to the intake pipe.

26. Install the charged air hose to the turbo outlet and the charged air cooler.

27. Install the A/C condenser lines, the transmission cooler lines, the fuel cooler lines, the T-case cooler lines, the coolant hoses

and the auxiliary coolant pump thermal switch electrical connector to the cooler pack.

28. Evacuate and charge the A/C system.

29. Fill and bleed the cooling system.

30. Fill the engine with the proper weight and level of engine oil.

31. Install the rubber and sponge pads on the air lift brackets.

32. Install the left side splash shield.

33. Install the right side splash shield and battery tray.

34. Install and connect the batteries.

35. Install the hood.

36. Perform the turbocharger learn procedure.

37. Test drive and verify proper operation of all systems affected by engine removal.

38. Inspect for fluid leaks and repair if necessary.

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

Item

Lb-Ft.

Lb-In.

N•m

Camshaft Gear Bolt

173

-

234

Camshaft Thrust Plate Bolt

16

-

22

Crankshaft Balancer Bolt

1st Step 74

-

1st Step 100þ

2nd Step

90þdegrees

-

2nd Step

90þdegrees

Cylinder Head M12 Bolt - Angular Tightening Method

1st Step 37

-

1st Step 50

2nd Step 59

-

2nd Step 80

3rd Step 60þdegrees

4th Step 90þdegrees

Cylinder Head M8 Bolt

18

-

25

Drive Belt Tensioner

37

-

50

Engine Block Coolant Plug

13

-

18

Engine Mount Through Bolt to Frame

55

-

75

Engine Mount to Block Bolts

43

-

58

Engine Mount to Frame Bolt

48

-

65

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2-52

Engine

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ENGINE SPECIFICATIONS

General

Engine Type

90þdegree V-8

Flywheel Bolt - Angular Tightening Method

1st Step 58

-

1st Step 79

2nd Step 60þdegrees

3rd Step 60þdegrees

Front Engine Cover Bolt

18

-

25

Glow Plug

13

-

18

Idle Pulley

37

-

50

Intake Manifold Bolts/Nuts

18

-

25

Oil Drain Plug

62

-

84

Oil Fill Tube Bolt

18

-

25

Oil Filter

18

-

25

Oil Gallery Plugs

39

-

53

Power Steering Pump Bracket Bolt

37

-

50

Power Steering Pump Bolt

37

50

Rocker Arm Shaft Bracket Bolt

30

-

41

Starter Motor Bolt

58

-

78

Thermostat Housing Bolts/Nuts

18

-

25

Thermostat Cover Bolt

18

-

25

Torque Converter Bolt

44

-

60

Turbocharger Bolt

80

-

108

Valve Adjusting Nut

16

-

22

Valve Lifter Hold down Bracket Bolt

-

97

11

Valve Rocker Arm Cover Bolt - Lower

-

89

10

Valve Rocker Arm Cover Bolt - Upper

-

71þlbþin (Two

Times)

8þN·m (Two

Times)

Water Outlet Bolts

18

-

25

Water Pump Bolt

18

-

25

Water Pump Inlet Pipe Bolts

18

-

25

TORQUE SPECIFICATIONS

Item

Lb-Ft.

Lb-In.

N•m

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Engine 2-53

5745804

Displacement

• 6.6þLiter

• 402þcuþin

Bore

• 103þmm

• 4.0551þin

Stroke

• 99þmm

• 3.8976þin

Compression Ratio

• 17.5:1

Engine Compression Test - Minimum

• 2069þKPa

• 300þpsi

Idle Speed

• 680þRPM

Firing Order

• 1-2-7-8-4-5-6-3

Block

Cylinder Bore Diameter - Service Limits

• 103.11þmm

• 4.0594þin

Cylinder Bore Diameter - Production Value

• 103.0-103.014þmm

• 4.0551-4.0557þin

Cylinder Bore Out-of-Round - Production Value

• 0.015þmm

• 0.0006þin

Cylinder Bore Taper - Production Value

• 0.015þmm

• 0.0006þin

Camshaft

Camshaft Bearing Inside Diameter - Service Limit

• 61.07þmm

• 2.4043þin

Camshaft Bearing Inside Diameter - Production Value

• 61.00-61.03þmm

• 2.4016-2.4028þin

10-1-08

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