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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Automatic Transaxle - 4T80-E - Introduction (2 Of 2)) >> Repair Instructions >> Repair Instructions - Off Vehicle >> Secondary Pump Disassemble

Secondary Pump Disassemble

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Locating Pump Secondary Ball Seat
    GM12025Courtesy of GENERAL MOTORS CORP.
  1. Remove the following parts:
    • The retainer clip (215)
    • The pump ball seat (217)
    • The cut off ball (216)
    2. Fig 2: Identifying Pressure Regulator Boost Valve & Pressure Regulator Valve
    GM12024Courtesy of GENERAL MOTORS CORP.
  2. Remove the following parts:
    • The retainer clip (215)
    • The pressure regulator boost valve sleeve (214)
    • The pressure regulator boost valve (213)
    • The pressure regulator valve spring (212)
    • The pressure regulator spring retainer (210)
    • The pressure regulator valve (211)
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