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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 58 (Manual Transmission - ZF S6-650 - Overhaul) >> Repair Instructions >> Countershaft Disassemble

Countershaft Disassemble

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Tools Required 

J 44749  Split Plate Bearing/Gear Puller

    IMPORTANT:
    • Only remove the bearings if replacing the bearings. Do not use the bearings again after removal.
    • You must also replace the race for the bearing being replaced.
  1. Inspect the bearings for damage or wear. Refer to Bearings and Spacers Cleaning and Inspection .
  2. Using a hydraulic press and the J 44749  (1), remove the countershaft intermediate case bearing. Use the flat side of the J 44749  against the bearing.
    Fig 1: Removing Countershaft Intermediate Case Bearing
    GM663688Courtesy of GENERAL MOTORS CORP.
  3. Using a hydraulic press and the J 44749  (1), remove the bearing from the front of the countershaft.
    Fig 2: Locating Bearing Assembly
    GM663691Courtesy of GENERAL MOTORS CORP.