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Home >> Mercedes Benz >> 1995 >> E420 >> Repair and Diagnosis >> External Pages >> Different car >> Section 25 (Automatic Transmission - 140 Chassis) >> Testing & Repair >> Dismantling and assembling transmission (section 1) - AR27.50-P-0600A >> Measure end play between park pawl gear and grooved ball bearing - AR27.50-P-0600-06A

Measure end play between park pawl gear and grooved ball bearing - AR27.50-P-0600-06A

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Test values for gear set

Number Designation Transmission 722.6 Transmission 722.9
BE27.50-P-1004-01A End play between park pawl gear and grooved ball bearing mm 0.3...0.5 0.20...0.40
Fig 1: Identifying Parallel Support (126 589 04 31 00)
G04606570Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

    Determine measurement "a" 

  1. Fit parallel support (029) on transmission housing. Using the depth gauge measure from the parallel support (029) to the park pawl gear (15).
    Fig 2: Identifying Transmission Housing, Parallel Support & Park Pawl Gear
    G04606571Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  2. Determine measurement "b" 

  3. Using the depth gauge measure from the parallel support (029) to the contact surface of the grooved ball bearing (67) in the transmission housing.
    Fig 3: Identifying Parallel Support Transmission Housing, Grooved Ball Bearing
    G04606572Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  4. Adjust the axial play "E" by means of shim as per the calculation example.

    Example calculation: 

    Dimension "a" 49.9 mm

    Dimension "b" 49.0 mm

    Difference 0.9 mm

    Axial play "E" - 0.4 mm

    Shim 0.5 mm

  5. Install the corresponding shim.

    IMPORTANT Shims are available in thicknesses of 0.2 to 0.5 mm. The graduation is 0.1 mm.