Hummer H3. Manual — part 270

First Pass

30 N.m

22 lb ft

Final Pass

155 degrees

Cylinder Head End Bolts - 2 Short

First Pass

7 N.m

62 lb in

Final Pass

60 degrees

Cylinder Head End Bolts - 1 Long

First Pass

7 N.m

62 lb in

Final Pass

120 degrees

Cylinder Head Oil Gallery Plug

38 N.m

28 lb ft

Differential Carrier Assembly Bushing to Frame
Bolt

152 N.m

112 lb ft

Drive Belt Idler Pulley Bolt

50 N.m

37 lb ft

Drive Belt Tensioner Bolt

50 N.m

37 lb ft

Engine Block Coolant Plug

50 N.m

37 lb ft

Engine Block Oil Gallery Plug - Side

35 N.m

26 lb ft

Engine Flywheel Bolt

First Pass

40 N.m

30 lb ft

Final Pass

45 degrees

Engine Front Cover Bolt

10 N.m

89 lb in

Engine Front Cover - Center - Small Bolt

8 N.m

71 lb in

Engine Front Cover Spacer Bolt

10 N.m

89 lb in

Engine Front Lift Bracket Bolt

First Pass

5 N.m

44 lb in

Final Pass

50 N.m

37 lb ft

Engine Mount Bolt

50 N.m

37 lb ft

Engine Mount-to-Frame Bracket Bolt

85 N.m

63 lb ft

Engine Wiring Ground Lead Bolt

20 N.m

15 lb ft

Engine Wiring Harness Bracket Bolt

10 N.m

89 lb ft

EVAP Purge Solenoid Valve Bolt

10 N.m

89 lb in

Exhaust Camshaft Actuator Bolt

First Pass

25 N.m

18 lb ft

Final Pass

135 degrees

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Exhaust Camshaft Position Sensor Bolt

10 N.m

89 lb in

Exhaust Manifold Bolt

First Pass

20 N.m

15 lb ft

Second Pass

20 N.m

15 lb ft

Final Pass

20 N.m

15 lb ft

Exhaust Manifold Heat Shield Nut

10 N.m

89 lb in

Exhaust Manifold Heat Shield Stud

10 N.m

89 lb in

Fuel Hose/Pipe Bracket Nut

20 N.m

15 lb ft

Fuel Injector Rail Bolt

10 N.m

89 lb in

Fuel Pressure Regulator Bolt

8 N.m

70 lb in

Generator Mounting Bolt

50 N.m

37 lb in

Heater Inlet Pipe Bolt

10 N.m

89 lb in

Heater Outlet Fitting

45 N.m

33 lb ft

Ignition Control Module Bolt

10 N.m

89 lb in

Heater Outlet Hose/Pipe Bracket to Left Engine
Mount Bolt

9 N.m

80 lb in

Intake Camshaft Position Sensor Bolt

10 N.m

89 lb in

Intake Camshaft Sprocket Bolt

First Pass

20 N.m

15 lb ft

Final Pass

100 degrees

Intake Manifold Bolt

10 N.m

89 lb in

Knock Sensor

25 N.m

18 lb ft

Oil Filter

30 N.m

22 lb ft

Oil Filter Adapter

50 N.m

37 lb ft

Oil Filter Bypass Hole Plug

14 N.m

124 lb in

Oil Level Indicator Tube Bolt

10 N.m

89 lb in

Oil Pan Bolt - Ends

10 N.m

89 lb in

Oil Pan Bolt - Sides

25 N.m

18 lb ft

Oil Pan Drain Plug

26 N.m

19 lb ft

Oil Pressure Switch

20 N.m

15 lb ft

Oil Pump Cover Bolt

10 N.m

89 lb in

Oil Pump Pipe and Screen Assembly Bolt

10 N.m

89 lb in

Oil Pump Pressure Relief Valve Plug

14 N.m

124 lb in

Power Steering Pump Bolt

25 N.m

18 lb ft

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

ENGINE MECHANICAL SPECIFICATIONS

Engine Mechanical Specifications

Power Steering Pump Bracket Bolt

50 N.m

37 lb ft

Spark Plug

18 N.m

13 lb ft

Starter Motor Bolt

50 N.m

37 lb ft

Starter Motor Nut

50 N.m

37 lb ft

Starter Motor Stud

16 N.m

12 lb ft

Starter Solenoid - S Terminal Nut

3.5 N.m

31 lb in

Thermostat Housing bolt

10 N.m

89 lb in

Throttle Control Module Bolt

10 N.m

89 lb in

Timing Chain Tensioner Bolt

25 N.m

18 lb ft

Timing Chain Tensioner Guide Bolt

22 N.m

16 lb ft

Timing Chain Tensioner Shoe Bolt

25 N.m

18 lb ft

Torque Converter Bolts

60 N.m

44 lb ft

Transmission Mounting Bolts

50 N.m

37 lb ft

Transmission Oil Cooler Pipes Bracket Bolt

20 N.m

15 lb ft

Water Outlet Bolt

10 N.m

89 lb in

Water Pump Bolt

10 N.m

89 lb in

Water Pump Pulley Bolt

25 N.m

18 lb ft

Application

Specifications

Metric

English

General

Engine Type

In-Line-5

Displacement

3.7L

223 cu in

RPO

LLR

VIN

E

Bore

95.5 mm

3.76 in

Stroke

102 mm

4.02 in

Compression Ratio

10.3:1

Engine Compression Test

1482 kPa

215 psi

Firing Order

1-3-5-4-2

1.14-1.25 mm

0.044-0.050 in

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Spark Plug Gap

Block

Crankshaft Main Bearing Bore
Diameter

78.070-78.088 mm

3.0760-3.0766 in

Cylinder Bore Diameter

95.490-95.506 mm

3.7623-3.7629 in

Cylinder Bore Out-of-Round

0.013 mm

0.0005 in

Cylinder Head Deck Surface Flatness

0.08 mm

0.003 in

Cylinder Sleeve Recession

0.015 mm

0.0006 in

Camshaft

Camshaft End Play - Exhaust

0.045-0.215 mm

0.0017-0.0084 in

Camshaft End Play - Intake

0.051-0.201 mm

0.0020-0.0079 in

Camshaft Journal Diameter - All Intake
and Exhaust #2-#7

26.936-26.960 mm

1.0612-1.0622 in

Camshaft Journal Diameter - Exhaust
#1

29.936-29.960 mm

1.1794-1.1804 in

Camshaft Journal to Bore Clearance

0.040-0.085 mm

0.0015-0.0033 in

Connecting Rod

Connecting Rod Bearing Clearance

0.021-0.065 mm

0.0008-0.0025 in

Connecting Rod Bore Diameter -
Bearing End

60.332-60.338 mm

2.3749-2.3755 in

Connecting Rod Bore Out-of-Round -
Bearing End

0.006 mm

0.0002 in

Connecting Rod Side Clearance

0.05-0.35 mm

0.0019-0.0137 in

Crankshaft

Crankshaft End Play

0.112-0.388 mm

0.0044-0.0153 in

Crankshaft Main Bearing Clearance

0.012-0.064 mm

0.0004-0.0025 in

Crankshaft Main Journal Diameter

69.968-69.984 mm

2.7567-2.7574 in

Crankshaft Main Journal Out-of-Round

0.005 mm

0.0002 in

Crankshaft Main Journal Taper

0.005 mm

0.0002 in

Cylinder Head

Surface Flatness - Block Deck

0.08 mm

0.003 in

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3