Hummer H3. Manual — part 479
1/2 of Journal Length - Production
Connecting Rod Journal Taper - Maximum for
1/2 of Journal Length - Service
0.02 mm
0.00078 in
Crankshaft End Play
0.04-0.2 mm
0.0015-0.0078 in
Crankshaft Main Bearing Clearance -
Production
0.02-0.052 mm
0.0008-0.0021 in
Crankshaft Main Bearing Clearance - Service
0.02-0.065 mm
0.0008-0.0025 in
Crankshaft Main Journal Diameter -
Production
64.992-65.008
mm
2.558-2.559 in
Crankshaft Main Journal Diameter - Service
64.992 mm
2.558 in
Crankshaft Main Journal Out-of-Round -
Production
0.003 mm
0.000118 in
Crankshaft Main Journal Out-of-Round -
Service
0.008 mm
0.0003 in
Crankshaft Main Journal Taper - Production
0.01 mm
0.0004 in
Crankshaft Main Journal Taper - Service
0.02 mm
0.00078 in
Crankshaft Rear Flange Runout
0.05 mm
0.002 in
Crankshaft Reluctor Ring Runout - Measured
1.0 mm (0.04 in) Below Tooth Diameter
0.7 mm
0.028 in
Crankshaft Thrust Surface - Production
26.14-26.22 mm
1.029-1.0315 in
Crankshaft Thrust Surface - Service
26.22 mm
1.0315 in
Crankshaft Thrust Surface Runout
0.025 mm
0.001 in
Cylinder Head
Cylinder Head Height/Thickness - Measured
from the Cylinder Head Deck to the Valve
Rocker Arm Cover Seal Surface
120.2 mm
4.732 in
Surface Flatness - Block Deck - Measured
Within a 152.4 mm (6.0 in) Area
0.08 mm
0.003 in
Surface Flatness - Block Deck - Measuring the
Overall Length of the Cylinder Head
0.1 mm
0.004 in
Surface Flatness - Exhaust Manifold Deck
0.13 mm
0.005 in
Surface Flatness - Intake Manifold Deck
0.08 mm
0.0031 in
2008 Hummer H3
2008 ENGINE Engine Mechanical - 5.3L - H3
Valve Guide Installed Height - Measured from
the Spring Seat Surface to the Top of the
Guide
17.32 mm
0.682 in
Intake Manifold
Surface Flatness - Measured at Gasket Sealing
Surfaces and Measured Within a 200 mm (7.87
in) Area that Includes 2 Runner Port Openings
0.3 mm
0.118 in
Lubrication System
Oil Capacity - with Filter
5.68 liters
6.0 quarts
Oil Capacity - without Filter
5.20 liters
5.5 quarts
Oil Pressure - Minimum - Hot
41 kPa at 1,000
engine RPM
124 kPa at 2,000
engine RPM
165 kPa at 4,000
engine RPM
6 psig at 1,000
engine RPM
18 psig at 2,000
engine RPM
24 psig at 4,000
engine RPM
Oil Pan
Front Cover Alignment - at Oil Pan Surface
0.0-0.5 mm
0.0-0.02 in
Crankshaft Rear Oil Seal Housing Alignment -
at Oil Pan Surface
0.0-0.5 mm
0.0-0.02 in
Oil Pan Alignment - to Rear of Engine Block
at Transmission Housing Mounting Surface
0.0-0.1 mm
0.0-0.004 in
Piston Rings
Piston Ring End Gap - First Compression Ring
- Measured in Cylinder Bore - Production
0.23-0.44 mm
0.009-0.017 in
Piston Ring End Gap - First Compression Ring
- Measured in Cylinder Bore - Service
0.23-0.5 mm
0.009-0.0196 in
Piston Ring End Gap - Second Compression
Ring - Measured in Cylinder Bore - Production
0.44-0.7 mm
0.017-0.027 in
Piston Ring End Gap - Second Compression
Ring - Measured in Cylinder Bore - Service
0.44-0.76 mm
0.0173-0.03 in
Piston Ring End Gap - Oil Control Ring -
Measured in Cylinder Bore - Production
0.18-0.75 mm
0.007-0.029 in
Piston Ring End Gap - Oil Control Ring -
0.18-0.81 mm
0.007-0.032 in
2008 Hummer H3
2008 ENGINE Engine Mechanical - 5.3L - H3
Measured in Cylinder Bore - Service
Piston Ring-to-Groove Clearance - First
Compression Ring - Production
0.04-0.085 mm
0.00157-0.00335
in
Piston Ring-to-Groove Clearance - First
Compression Ring - Service
0.04-0.085 mm
0.00157-0.00335
in
Piston Ring-to-Groove Clearance - Second
Compression Ring - Production
0.04-0.078 mm
0.00157-0.0031 in
Piston Ring-to-Groove Clearance - Second
Compression Ring - Service
0.04-0.078 mm
0.00157-0.0031 in
Piston Ring-to-Groove Clearance - Oil Control
Ring - Production
0.012-0.2 mm
0.0005-0.0078 in
Piston Ring-to-Groove Clearance - Oil Control
Ring - Service
0.012-0.2 mm
0.0005-0.0078 in
Pistons and Pins
Pin - Piston Pin Clearance-to-Piston Pin Bore -
Production
0.002-0.01 mm
0.00008-0.0004 in
Pin - Piston Pin Clearance-to-Piston Pin Bore -
Service
0.002-0.015 mm 0.00008-0.0006 in
Pin - Piston Pin Diameter
23.952-23.955
mm
0.9430-0.9431 in
Pin - Piston Pin Fit in Connecting Rod Bore -
Production
0.007-0.02 mm
0.00027-0.00078
in
Pin - Piston Pin Fit in Connecting Rod Bore -
Service
0.007-0.022 mm
0.00027-0.00086
in
Piston - Piston Diameter - Measured Over Skirt
Coating
96.002-96.036
mm
3.7796-3.7809 in
Piston - Piston-to-Bore Clearance - Production
-0.036 to +0.016
mm
-0.0014 to
+0.0006 in
Piston - Piston-to-Bore Clearance - Service
Limit with Skirt Coating Worn Off
0.071 mm
0.0028 in
Valve System
Valves - Valve Face Angle
45 degrees
Valves - Valve Face Width
1.25 mm
0.05 in
Net Lash - No Adjustment
2008 Hummer H3
2008 ENGINE Engine Mechanical - 5.3L - H3
ADHESIVES, FLUIDS, LUBRICANTS, AND SEALERS
Valves - Valve Lash
Valve Lift - Intake
12.24 mm
0.482 in
Valve Lift - Exhaust
12.24 mm
0.482 in
Valves - Valve Seat Angle
46 degrees
Valves - Valve Seat Runout
0.05 mm
0.002 in
Valves - Valve Seat Width - Exhaust
1.78 mm
0.07 in
Valves - Seat Width - Intake
1.02 mm
0.04 in
Valves - Valve Stem Diameter - Production
7.955-7.976 mm
0.313-0.314 in
Valves - Valve Stem Diameter - Service
7.95 mm
0.313 in
Valves - Valve Stem-to-Guide Clearance -
Production - Intake
0.025-0.066 mm
0.001-0.0026 in
Valves - Valve Stem-to-Guide Clearance -
Service - Intake
0.093 mm
0.0037 in
Valves - Valve Stem-to-Guide Clearance -
Production - Exhaust
0.025-0.066 mm
0.001-0.0026 in
Valves - Valve Stem-to-Guide Clearance -
Service - Exhaust
0.093 mm
0.0037 in
Rocker Arms - Valve Rocker Arm Ratio
1.70:1
Valve Springs - Valve Spring Free Length
52.9 mm
2.08 in
Valve Springs - Valve Spring Installed Height
45.75 mm
1.8 in
Valve Springs - Valve Spring Load - Closed
340 N at 45.75
mm
76 lb at 1.8 in
Valve Springs - Valve Spring Load - Open
980 N at 33.55
mm
220 lb at 1.32 in
Application
Type of Material
GM Part Number
United
States
Canada
Coolant Temperature Sensor Threads
Sealant
12346004
10953480
Cylinder Head Core Hole Plug
Threadlock
12345382
10953489
Cylinder Head Plug
Threadlock
12345382
10953489
2008 Hummer H3
2008 ENGINE Engine Mechanical - 5.3L - H3
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