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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 133 (Automatic Transmission - 4L80-E/4L85-E - Introduction (2 Of 2)) >> Repair Instructions >> Repair Instructions - Off Vehicle >> Overdrive Carrier Assembly Disassemble

Overdrive Carrier Assembly Disassemble

WARNING: This page is about a different car, the 2007 GMC Yukon XL and 2007 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Overdrive Carrier Assembly, Pinion Gear Pin Retainer, & Pin Retaining Ring
    GM31125Courtesy of GENERAL MOTORS CORP.
  1. Remove the overdrive carrier pinion gear pin retaining ring (521) from the overdrive carrier assembly (514).
  2. Remove the overdrive carrier pinion gear pin retainer (520).
    3. Fig 2: Locating Overdrive Carrier Pinion Gear Inspection Areas
    GM31127Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Before removing the overdrive carrier pinion gear pins (519), mark the location of the overdrive carrier pinion gears (518) and the overdrive carrier pinion gear pins (519) so they can be identified for reassembly.
    IMPORTANT: Keep all washers and roller bearings together with the overdrive carrier pinion gear and pin they were removed with. The pinion gears, washers and roller bearings must be reinstalled in their original locations.
  3. Remove one overdrive carrier pinion gear (518) and pin (519) at a time.
  4. Inspect the overdrive carrier pinion gear (518), pin (519), roller bearings (517), steel thrust washers (516) and thrust washers (515) for wear or damage.
    5. Fig 3: Inspection Areas On Overrun Clutch Housing Thrust Bearing Assembly
    GM774708Courtesy of GENERAL MOTORS CORP.
  5. Remove the overrun clutch housing thrust bearing assembly (513) from the overdrive carrier assembly (514). The bearing will fall out when the pinion gears are removed.
  6. Inspect the pinion pocket thrust surfaces for burrs.
  7. Inspect the overdrive carrier assembly (514) for cracks, damage and wear.
  8. Inspect the overrun clutch housing thrust bearing assembly (513).
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