Hummer H1 (2002+). Manual - part 34

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Engine 2-97

05745159

SERVICE PISTON AND CYLINDER BORE SPECIFICATIONS (MM)

NOTE: Cylinders #7 and #8 require 0.013 mm (0.005 in.) additional clearance (piston to bore).

CRANKSHAFT MAIN JOURNAL DIAMETER AND BEARING SELECTION (MM)

NOTE: U.S. indicates undersize bearing. Bearing sizes are in millimeters. To convert from metric to U.S. sizes, multiply metric
(mm) figure by 0.03937.

CRANKSHAFT CONNECTING ROD JOURNAL DIAMETER AND BEARING SELECTION (MM)

NOTE: To convert metric to U.S. sizes, multiply metric (mm) figure by 0.03937.

Engine

Displacement

Piston Grade

Skirt Diameter

Bore Diameter

1 thru 6

Bore Diameter

7 & 8

6.5L

Production Std.—JT

102.865-102.880

102.972-102.987

102.985-103.003

Production Rework —

S or ST

103.008-103.026

103.117-103.130

103.130-103.143

Service Std.‚—JT

102.865-102.883

102.972-102.990

102.985-103.003

Service Hi Limit—GT

102.904-102.922

103.013-103.026

103.026-103.039

0.50 MM Oversize

103.339-103.417

103.508-103.512

103.521-103.525

6.5L Engines

Crankshaft Main Journal Diameter

Cylinder Main Bearing Bore Diameters

#1 to #4

79.850
79.842

Stamp 3

79.842
79.834

Stamp 2

79.834
79.826

Stamp 1

74.917
74.925

Blue

74.912
74.920

Blue

1-.026 U.S. in Case

1-.026 U.S. in Cap

1-.013 U.S. in Case

1-.026 U.S. in Cap

1-STD in Case

1-.026 U.S. in Cap

74.925
74.933

Orange or Red

74.920
74.928

Orange or Red

1-.026 U.S. in Case

1-.013 U.S. in Cap

1-.013 U.S. in Case

1-.013 U.S. in Cap

1-STD in Case

1-.013 in Cap

74.933
74.942

White

74.928
74.936

White

1-.026 U.S. in Case

1-STD in Cap

1-.013 in Case

1-STD in Cap

1-STD Case

1-STD in Cap

Crankshaft Pin Journal

Diameter

Connecting Rod

Bearings

Rod & Cap Bearings

Color Codes

Connecting Rod ID

60.913 mm
60.926 mm Green

Standard in rod

.026 U.S. in cap

.026 U.S.

(Green)

64.150 mm
64.124 mm

60.926 mm
60.939 mm Yellow

Standard in rod

Standard in cap

Standard

(Yellow)

2-98

Engine

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BLOCK, CAMSHAFT AND BEARING SIZES (MM)

NOTE: To convert metric to U.S. sizes, multiply metric (mm) amount by 0.03937.

6.5L Engines

Camshaft Journal Diameter O.D
(Diameter Tolerance 0.55 mm)

55.025
54.970

51.025
50.970

Finished Cam Bearing ID
(Diameter tolerance 0.038 mm)

55.088
55.050

51.083
51.045

Camshaft Bearing Clearance

.118
.025

.113
.020

Cam Bore Diameter (Block)

59.17
59.12

58.92
58.87

58.67
58.62

58.42
58.37

50.42
50.37

Cam Bearing O.D.

59.30
59.25

59.05
59.00

58.80
58.75

58.55
58.50

50.55
50.50

Press Fit (Bearing to Block)

.18
.08

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Engine 2-99

05745159

ESSENTIAL TOOLS

Procure from Kent-Moore.

J–26999-30

J–33139

J–34116

J–22102

J–23523-F

J–23951

J–26999

J–39084

J–35555

J–41240-1

J–41240-5A

Tool No.

Description

J–23523-F

Harmonic Balancer Remover/Installer Set

J–26999-30

Compression Gauge Adapter

J–22102

Front Crankshaft Seal Installer

J–26999

Compression Gauge

J–39084

Rear Main Seal Installer

J–33139

Engine Lifting Sling and Bracket

J–23951

Water Manometer

J–35555

Vacuum (MITY-VAC) Pump

J–8001

Dial Indicator Set (not shown)

J–23129

Universal Seal Remover, use with slide hammer J–6125-1B (not shown)

J–41613

Turbocharger Inlet Guard (not shown)

J–41415-A

Glow Plug Socket (not shown)

J–41240-1

Spanner, Fan Clutch (not shown)

J–41240-5A

Wrench, Fan Clutch (not shown)

2-100

Engine

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SPECIAL TOOLS

Procure from Kent-Moore.

Tool No.

Description

J–29834

Valve Lifter Removal Tool

J–8080

Main Bearing Shell Remover/Installer (In-Vehicle)

J–6098-10

Camshaft Bearing Remover/Installer (use with J–33049)

J–8062

Valve Spring Compressor

J–33042

Static Timing Mark Gauge

J–33049

Camshaft Bearing Replacement Set (Universal)

J–24270

Ridge Reamer

J–29134-8

Piston Pin Retaining Ring Compression Sleeve

J–8087

Cylinder Bore Gauge

J–39507

Piston Retaining Ring Installer Set

J–8089

Carbon Remover Brush, for cast iron and steel

J–8358

Carbon Remover Brush, for aluminum

J–25087-C

Oil Pressure Tester/Pump Primer

J–8037

Piston Ring Compressor

J–8101

Valve Guide Cleaner (not shown)

J–42525

Piston Ring Expander (not shown)

J–6098-O1

Camshaft Bearing Remover/Installer, use with J–6098-10 and J–33049 (not shown)

J–8080

J–33042

J–8089

J–25087-C

J–8037

J–29834

J–8062

J–24270

J–33049

J–8087

J–39507

J–6098-10

J–29134-8

J–8358

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