Hummer H2. Manual — part 1687
Ground Harness Bolt
25 N.m 18 lb ft
Ignition Coil-to-Bracket Bolts
8 N.m 71 lb in
Ignition Coil Bracket-to-Valve Rocker Arm Cover Bolts
12 N.m
106 lb
in
Intake Manifold Bolts - First Pass in Sequence
5 N.m 44 lb in
Intake Manifold Bolts - Final Pass in Sequence
10 N.m 89 lb in
Intake Manifold Wiring Harness Stud
10 N.m 89 lb in
Knock Sensors
20 N.m 15 lb ft
Oil Filter
30 N.m 22 lb ft
Oil Filter Fitting
55 N.m 40 lb ft
Oil Level Indicator Tube Bolt
25 N.m 18 lb ft
Oil Level Sensor
13 N.m
115 lb
in
Oil Pan Baffle Bolts
12 N.m
106 lb
in
Oil Pan Closeout Cover Bolt - Left Side
9 N.m 80 lb in
Oil Pan Closeout Cover Bolt - Right Side
9 N.m 80 lb in
Oil Pan Cover Bolts
12 N.m
106 lb
in
Oil Pan Drain Plug
25 N.m 18 lb ft
Oil Pan M8 Bolts - Oil Pan-to-Engine Block and Oil Pan-to-Front Cover
25 N.m 18 lb ft
Oil Pan M6 Bolts - Oil Pan-to-Rear Cover
12 N.m
106 lb
in
Oil Pressure Sensor
20 N.m 15 lb ft
Oil Pump-to-Engine Block Bolts
25 N.m 18 lb ft
Oil Pump Cover Bolts
12 N.m
106 lb
in
Oil Pump Relief Valve Plug
12 N.m
106 lb
in
Oil Pump Screen Nuts
25 N.m 18 lb ft
Oil Pump Screen-to-Oil Pump Bolt
12 N.m
106 lb
in
Positive Battery Cable Clip Bolt
9 N.m 80 lb in
Power Steering Pump Rear Bolt
50 N.m 37 lb ft
Spark Plugs - New Cylinder Heads
20 N.m 15 lb ft
Spark Plugs - All Subsequent Installations
15 N.m 11 lb ft
Throttle Body Nuts
10 N.m 89 lb in
Throttle Body Studs
6 N.m 53 lb in
Torque Converter Bolts
63 N.m 47 lb ft
Transmission Cover Bolt
12 N.m
106 lb
in
106 lb
2004 Hummer H2
2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2
ENGINE MECHANICAL SPECIFICATIONS
Engine Mechanical Specifications
Valve Lifter Guide Bolts
12 N.m
in
Valve Rocker Arm Bolts
30 N.m 22 lb ft
Valve Rocker Arm Cover Bolts
12 N.m
106 lb
in
Water Inlet Housing Bolts
15 N.m 11 lb ft
Water Pump Bolts - First Pass
15 N.m 11 lb ft
Water Pump Bolts - Final Pass
30 N.m 22 lb ft
Water Pump Cover Bolts
15 N.m 11 lb ft
Application
Specification
Metric
English
General
z
Engine Type
V8
z
Displacement
6.0L
364 CID
z
RPO
LQ4
z
VIN
U
z
Bore
101.618-101.636
mm
4.0007-4.0014 in
z
Stroke
92.0 mm
3.622 in
z
Compression Ratio
9.41:1
z
Firing Order
1-8-7-2-6-5-4-3
z
Spark Plug Gap
1.524 mm
0.06 in
Block
z
Camshaft Bearing Bore 1 and 5 Diameter - First Design
59.12-59.17 mm
2.327-2.329 in
z
Camshaft Bearing Bore 2 and 4 Diameter - First Design
58.87-58.92 mm
2.317-2.319 in
z
Camshaft Bearing Bore 3 Diameter - First Design
58.62-58.67 mm
2.307-2.309 in
z
Camshaft Bearing Bore 1 and 5 Diameter - Second Design 59.62-59.67 mm
2.347-2.349 in
z
Camshaft Bearing Bore 2 and 4 Diameter - Second Design 59.12-59.17 mm
2.327-2.329 in
z
Camshaft Bearing Bore 3 Diameter - Second Design
58.62-58.67 mm
2.307-2.309 in
z
Crankshaft Main Bearing Bore Diameter
69.871-69.889
mm
2.75-2.751 in
z
Crankshaft Main Bearing Bore Out-of-Round
0.006 mm
0.0002 in
z
Cylinder Bore Diameter
101.618-101.636
mm
4.0007-4.0017 in
z
Cylinder Bore Taper - Thrust Side
0.018 mm
0.0007 in
2004 Hummer H2
2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2
z
Cylinder Head Deck Height - Measuring from the
Centerline of Crankshaft to the Deck Face
234.57-234.82
mm
9.235-9.245 in
z
Cylinder Head Deck Surface Flatness - Measured within a
152.4 mm (6.0 in) Area
0.11 mm
0.004 in
z
Cylinder Head Deck Surface Flatness - Measuring the
Overall Length of the Block Deck
0.22 mm
0.008 in
z
Valve Lifter Bore Diameter
21.417-21.443
mm
0.843-0.844 in
Camshaft
z
Camshaft End Play
0.025-0.305 mm
0.001-0.012 in
z
Camshaft Journal Diameter
54.99-55.04 mm
2.164-2.166 in
z
Camshaft Journal Out-of-Round
0.025 mm
0.001 in
z
Camshaft Lobe Lift - Exhaust
7.13 mm
0.281 in
z
Camshaft Lobe Lift - Intake
6.96 mm
0.274 in
z
Camshaft Runout - Measured at the Intermediate Journals
0.05 mm
0.002 in
Connecting Rod
z
Connecting Rod Bearing Clearance - Production
0.023-0.065 mm
0.0009-0.0025 in
z
Connecting Rod Bearing Clearance - Service
0.023-0.076 mm
0.0009-0.003 in
z
Connecting Rod Bore Diameter - Bearing End
56.505-56.525
mm
2.224-2.225 in
z
Connecting Rod Bore Out-of-Round - Bearing End -
Production
0.006 mm
0.0002 in
z
Connecting Rod Bore Out-of-Round - Bearing End -
Service
0.006 mm
0.0002 in
z
Connecting Rod Side Clearance
0.11-0.51 mm
0.00433-0.02 in
Crankshaft
z
Connecting Rod Journal Diameter - Production
53.318-53.338
mm
2.0991-2.0999 in
z
Connecting Rod Journal Diameter - Service
53.308 mm
2.0987 in
z
Connecting Rod Journal Out-of-Round - Production
0.005 mm
0.0002 in
z
Connecting Rod Journal Out-of-Round - Service
0.01 mm
0.0004 in
z
Connecting Rod Journal Taper - Maximum for 1/2 of
Journal Length - Production
0.005 mm
0.0002 in
z
Connecting Rod Journal Taper - Maximum for 1/2 of
Journal Length - Service
0.02 mm
0.00078 in
z
Crankshaft End Play
0.04-0.2 mm
0.0015-0.0078 in
z
Crankshaft Main Bearing Clearance - Production
0.02-0.052 mm
0.0008-0.0021 in
2004 Hummer H2
2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2
z
Crankshaft Main Bearing Clearance - Service
0.02-0.065 mm
0.0008-0.0025 in
z
Crankshaft Main Journal Diameter - Production
64.992-65.008
mm
2.558-2.559 in
z
Crankshaft Main Journal Diameter - Service
64.992 mm
2.558 in
z
Crankshaft Main Journal Out-of-Round - Production
0.003 mm
0.000118 in
z
Crankshaft Main Journal Out-of-Round - Service
0.008 mm
0.0003 in
z
Crankshaft Main Journal Taper - Production
0.01 mm
0.0004 in
z
Crankshaft Main Journal Taper - Service
0.02 mm
0.00078 in
z
Crankshaft Rear Flange Runout
0.05 mm
0.002 in
z
Crankshaft Reluctor Ring Runout - Measured 1.0 mm (0.04
in) Below Tooth Diameter
0.7 mm
0.028 in
z
Crankshaft Thrust Surface - Production
26.14-26.22 mm
1.029-1.0315 in
z
Crankshaft Thrust Surface - Service
26.22 mm
1.0315 in
z
Crankshaft Thrust Surface Runout
0.025 mm
0.001 in
Cylinder Head
z
Cylinder Head Height/Thickness - Measured from the
Cylinder Head Deck to the Valve Rocker Arm Cover Seal
Surface
120.2 mm
4.732 in
z
Surface Flatness - Block Deck - Measured Within a 152.4
mm (6.0 in) Area
0.08 mm
0.003 in
z
Surface Flatness - Block Deck - Measuring the Overall
Length of the Cylinder Head
0.1 mm
0.004 in
z
Surface Flatness - Exhaust Manifold Deck
0.13 mm
0.005 in
z
Surface Flatness - Intake Manifold Deck
0.08 mm
0.0031 in
z
Valve Guide Installed Height - Measured from the Spring
Seat Surface to the Top of the Guide
17.32 mm
0.682 in
Intake Manifold
z
Surface Flatness - Measured at Gasket Sealing Surfaces and
Measured Within a 200 mm (7.87 in) Area that Includes
Two Runner Port Openings
0.3 mm
0.118 in
Lubrication System
z
Oil Capacity - with Filter
5.68 Liters
6.0 Quarts
z
Oil Capacity - without Filter
4.73 Liters
5.0 Quarts
z
Oil Pressure - Minimum - Hot
41 kPa at 1,000
engine RPM
124 kPa at 2,000
engine RPM
165 kPa at 4,000
6 psig at 1,000
engine RPM
18 psig at 2,000
engine RPM
24 psig at 4,000
2004 Hummer H2
2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2
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