Manual:HUMMER Hummer H3 Base 2010Page:20398 / 37523



Reverse Idler Gear and Shaft — 2010 Hummer H3 Base, Automatic Service Manual

Reverse Idler Gear and Shaft

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Reverse Idler Gear & Shaft
    GM881079Courtesy of GENERAL MOTORS CORP.
  1. Clean the reverse idler gear and shaft in a suitable solvent and air dry all the parts.
  2. Inspect the bushing in the reverse idler gear for the following conditions:
    • Excessive wear
    • Scoring
    • Pitting
  3. Replace the reverse idler gear if the bushing is faulty.
  4. Inspect the reverse idler gear shaft for the following conditions:
    • Excessive wear
    • Scoring
    • Pitting
  5. Replace the reverse idler gear shaft if it is faulty.
    6. Fig 2: Checking Reverse Idler Gear Radial Clearance
    GM881116Courtesy of GENERAL MOTORS CORP.
  6. Using J 8001-3  or J 26900-12  (1) and J 26900-13  (2), measure the reverse idler gear radial clearance. See Special Tools .

    Specification: 

    • Standard Clearance: 0.040-0.082 mm (0.0016-0.0032 in)
    • Maximum Clearance: 0.130 mm (0.0051 in)
  7. If the clearance exceeds the maximum, replace the reverse idler gear or the reverse idler gear shaft.