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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1741 (Automatic Transmission - ALLISON - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> 1-2-3-4 Clutch Steel Plate Inspection

1-2-3-4 Clutch Steel Plate Inspection

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Inspecting Thickness Of 1-2-3-4 Steel Clutch Plate
    GM1217093Courtesy of GENERAL MOTORS CORP.
    IMPORTANT:
    • Measure as described below at a minimum of 3 locations.
    • Replace any 1-2-3-4 clutch steel plate that does not meet specifications.
  1. Measure the thickness of each 1-2-3-4 clutch steel plate (1) at dimension A.

    Specification:  The 1-2-3-4 clutch steel plate minimum thickness is 2.135 mm (0.084 in).

    2. Fig 2: Checking Cone On Steel Clutch Plate
    GM1217128Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Check the plates for coning on a level surface.
  2. Measure the cone of each plate (1) at dimension A.

    Specification:  The 1-2-3-4 clutch steel plate maximum cone is 0.200 mm (0.0079 in).

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