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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 214 (Drive Axle - Limited-Slip Differential) >> Repair Instructions >> Differential Clutch Pump Check Valve Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Clutch Pump Check Valve Bolts
    GM630684Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Inspect the clutch pump check valve O-ring seals in order to ensure they are not cut or damaged. Replace cut or damaged O-ring seals with new seals.
  1. Lubricate the O-ring seals (1, 2) with synthetic gear oil GM P/N 12378514 (Canadian P/N 88901045) or equivalent.
  2. Install the O-ring seals to the valve.
  3. Install the clutch pump check valve to the differential carrier by carefully pushing the valve straight in until fully seated.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  4. Install the clutch pump check valve mounting bolts (4, 5).

    Tighten:  Tighten the bolts to 10 N.m (89 lb in).

  5. Connect the clutch pump check valve electrical connector.
  6. Fill the rear differential lubricant. Refer to Lubricant Change in Rear Drive Axle.
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