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Home >> Hummer >> 2006 >> H1 4D Utility Pickup >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Transmission - ALLISON - Overhaul >> Specifications >> Selective Components Specifications

Selective Components Specifications

1-2-3-4 Clutch Backplate

Identification Wear Limit New Plate Thickness
Metric English
2420 11.400 mm (0.4488 in) 11.1-11.9 mm 0.4370-0.4685 in
8521 11.840 mm (0.4661 in) 11.54-12.34 mm 0.4543-0.4858 in
8522 12.280 mm (0.4835 in) 11.98-12.78 mm 0.4717-0.5031 in
8523 12.730 mm (0.5012 in) 12.43-13.23 mm 0.4894-0.5209 in
8524 13.180 mm (0.5189 in) 12.88-13.68 mm 0.5071-0.5386 in
Low and Reverse Clutch Piston Housing Selective Shim

Dimension C Thickness Identification
Metric English Metric English
1.008-1.184 mm 0.0397-0.0466 in 0.245-0.295 mm 0.0096-0.0116 in 0 Holes
1.185-1.414 mm 0.0467-0.0557 in 0.475-0.525 mm 0.0187-0.0207 in 1 Hole
1.415-1.644 mm 0.0557-0.0647 in 0.705-0.755 mm 0.0278-0.0297 in 2 Holes
1.645-1.874 mm 0.0648-0.0738 in 0.935-0.985 mm 0.0368-0.0388 in 3 Holes
1.875-2.104 mm 0.0738-0.0828 in 1.165-1.215 mm 0.0459-0.0478 in 4 Holes
2.105-2.334 mm 0.0829-0.0919 in 1.395-1.445 mm 0.0549-0.0569 in 5 Holes
2.335-2.510 mm 0.0919-0.0988 in 1.625-1.675 mm 0.0640-0.0659 in 6 Holes
Low and Reverse Clutch Steel Plate Minimum Thickness

Minimum Thickness Identification
Metric English
2.435 mm 0.0959 in 2
Low and Reverse Clutch Steel Selective Plate

Dimension C Identification
Metric English
35.3-35.86 mm 1.393-1.412 in 1
35.87-36.36 mm 1.413-1.431 in 2
36.37-37.27 mm 1.432-1.467 in 3