Measure And Adjust Axial Play Of Transmission - AR27.50-P-0580-01EWM

Transmission 725.0/1 

Fig 1: Identifying Drift (722 589 06 15 00)

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Fig 2: Identifying Device (725 589 00 31 00)

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Fig 3: Identifying Parallel Support (168 589 03 21 00)

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Fig 4: Identifying Sleeve (725 589 02 14 00)

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Required special tools:

• 2x parallel gauge (168 589 03 21 00) (12)
• Measuring sleeve (13) The following tools are required by the fixture (725 589 00 31 00):
• Measuring block (4)
• Measuring sleeve (2)
• Base frame (6)
• Drift (10)Commercially available devices/tools 

  Digital vernier caliper (3)

1. Place transmission housing (1) onto parallel gauges (12)
2. Depending on the transmission housing variants, fit measuring sleeve (2) or measuring sleeve (13) onto transmission housing (1).

   There are two transmission housing variants with different diameters (64 mm and 62 mm).

3. Place digital vernier caliper i (3) onto measuring sleeve (2) or measuring sleeve (13).
4. Reset digital vernier caliper (3) to value of 0 mm.
5. Move digital vernier caliper (3) onto parallel gauge (12) through bore in measuring sleeve (2) or measuring sleeve (13).

   Courtesy of MERCEDES-BENZ USA

   Courtesy of MERCEDES-BENZ USA

6. Determine dimension between measuring sleeve (2) or measuring sleeve (13) and parallel gauge (12) and note down.
7. Calculate dimension A1 and note down: Determined dimension - 50 mm (fixed dimension of measuring sleeve (2) or measuring sleeve (13)) = dimension A1 For example, 469.10 mm - 50.00 mm = 419.10 mm
8. Insert measuring block (4) into transmission mount.
9. Subject measuring block (4) to a force of 400 N.

   Crank the transmission several times so that the transmission mounts settle.

10. Place digital vernier caliper (3) flat onto base frame (6) and move to measuring block (4) with digital vernier caliper (3).
11. Reset digital vernier caliper (3) to value of 0 mm.
12. Move to support ring (5) of base frame (6) with digital vernier caliper (3).
13. Determine and note dimension.
14. Calculate interim value and note down: Fixed dimension (measuring block (4)) 55 mm - determined dimension = interim dimension.

    For example, 55.00 mm - 13.91 mm = 41.09 mm

15. Calculate dimension B1 and note down: Fixed dimension (base frame (6)) 370 mm intermediate dimension = dimension B1

    For example, 370.00 mm - 41.09 mm = 328.91 mm

    Courtesy of MERCEDES-BENZ USA

    Courtesy of MERCEDES-BENZ USA

16. Position base frame (6) and drift (10) on parallel gauges (12).
17. Place coupling K 27 (9) onto drift (10).
18. Place digital vernier caliper (3) onto base frame (6), move to seat (7) of deep-groove ball bearing with digital vernier caliper (3) and reset digital vernier caliper (3) to value of 0 mm.
19. Remove coupling K 27 (9) from drift (10).
20. Move to drift (10) with digital vernier caliper (3) and measure and note down dimension C1, e.g. 88.58 mm.
21. Determine shim thickness: Dimension A1 - dimension B1 - dimension C1 = interim value

    Interim value - play 0.3 mm = shim thickness e.g. 419.10 mm - 328.91 mm - 88.58 mm = 1.61 mm - 0.3 mm = 1.31 mm

22. Install shim of the determined thickness.

    Courtesy of MERCEDES-BENZ USA

    Courtesy of MERCEDES-BENZ USA