Hummer H1 (2006+). Manual — part 38
2-58
Engine
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Gear-to-Housing Clearance - Drive/Driven - Production Value
• 0.125-0.221þmm
• 0.0049-0.0087þin
Piston Rings
Piston Ring End Gap-First Compression Ring - Service Limit
• 1.37þmm
• 0.0539þin
Piston Ring End Gap-First Compression Ring - Production Value
• 0.3-0.45þmm
• 0.0118-0.0177þin
Piston Ring End Gap-Second Compression Ring - Service Limit
• 1.35þmm
• 0.0531þin
Piston Ring End Gap-Second Compression Ring - Production Value
• 0.50-0.65þmm
• 0.0197-0.0256þin
Piston Ring End Gap-Oil Control Ring - Service Limit
• 1.20þmm
• 0.0472þin
Piston Ring End Gap-Oil Control Ring - Production Value
• 0.15-0.35þmm
• 0.0059-0.0138þin
Piston Ring to Groove Clearance-First Compression Ring - Service Limit
• 0.26þmm
• 0.0102þin
Piston Ring to Groove Clearance-First Compression Ring - Production Value
• 0.08-0.17þmm
• 0.0030-0.0067þin
Piston Ring to Groove Clearance-Second Compression Ring - Service Limit
• 0.10þmm
• 0.0039þin
Piston Ring to Groove Clearance-Second Compression Ring - Production Value
• 0.01-0.03þmm
• 0.0004-0.0012þin
Piston Ring to Groove Clearance-Oil Control Ring - Service Limit
• 0.12þmm
• 0.0047þin
10-1-08
______________________________________________________________________
Engine 2-59
5745804
Piston Ring to Groove Clearance-Oil Control Ring - Production Value
• 0.01-0.03þmm
• 0.0004-0.0012þin
Pistons and Pins
Piston Diameter
• 102.948-102.960þmm
• 4.0531-4.0535þin
Piston Pin Bore Diameter
• 34.504-34.512þmm
• 1.3584-1.3587þin
Pin-Piston Pin Clearance to Piston Pin Bore - Service Limit
• 0.017þmm
• 0.0007þin
Pin-Piston Pin Clearance to Piston Pin Bore - Production Value
• 0.004-0.017þmm
• 0.0002-0.0007þin
Pin-Piston Pin Diameter - Service Limit
• 34.45þmm
• 1.3563þin
Pin-Piston Pin Diameter - Production Value
• 34.495-34.5þmm
• 1.3581-1.3583þin
Starter
Rated Output
• 3.5þKW
Turbocharger
Axial Play
• 0.11þmm
• 0.0043þin
Radial Play
• 0.20þmm
• 0.0079þin
Valve System
Valve Face Angle - Production Value
• 45þdegrees
10-1-08
2-60
Engine
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Valves-Valve Face Width - Service Limit
• 2.5þmm
• 0.0984þin
Valve Face Width - Production Value
• 2.1þmm
• 0.0827þin
Valve Head Diameter - Exhaust
• 31.0þmm
• 1.22þin
Valve Head Diameter - Intake
• 33.0þmm
• 1.30þin
Valve Seat Angle
• 45þdegrees
Valve Stem Diameter
• 7.0þmm
• 0.28þin
Valve Stem Oil Seal Installed Height
• 6.05þmm
• 0.2382þin
Valve Stem-to-Guide Clearance - Service Limit
• 0.20þmm
• 0.0079þin
Valve Stem-to-Guide Clearance - Exhaust - Production Value
• 0.038-0.071þmm
• 0.0015-0.0028þin
Valve Stem-to-Guide Clearance - Intake - Production Value
• 0.030-0.063þmm
• 0.0012-0.0025þin
Valve Stem-to-Guide Clearance
• 0.20þmm
• 0.0079þin
Valve Lifters/Push Rods-Push Rod Straightness
• 0.8þmm
• 0.0315þin
Valve Spring Free Length - Production Value
• 56.6þmm
• 2.2283þin
10-1-08
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Engine 2-61
5745804
Valve Spring Installed Height - Production Value
• 41þmm
• 1.6142þin
Valve Spring Load - Exhaust - Service Limit
• 275þN at 41þmm
• 61.8þlb at 1.61þin
Valve Spring load - Exhaust - Production Value
• 315-363þN at 41þmm
• 71-81.6þlb at 1.61þin
Valve Spring Load - Intake - Service Limit
• 306þN at 41þmm
• 68.8þlb at 1.61þin
Valve Spring Load - Intake - Production Value
• 315-363þN at 41þmm
• 71-81.6þlb at 1.61þin
10-1-08
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