Measurement of play in brake band B1 - AR27.50-P-0780-08A

WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.

TEST VALUES FOR BRAKE BAND/MULTIPLE DISC BRAKES

Number	Designation		Transmission 722.5
BE27.50-P-1003-02A	Release clearance, brake band B1	mm	1.8 - 2.4

Fig 1: Identifying Assembly Device (201 589 03 59 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 2: Identifying Micrometer Gauge (126 589 06 21 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Insert radial lip-type sealing ring (39) on brake band piston B1 (37).
Insert pressure pin with shims and sealing ring in brake band piston B1.

The sealing lip must point outwards.

Fig 3: Identifying Radial Lip-Type Sealing Ring On Brake Band Piston B1
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Mount assembly device (026) and screw onto transmission housing.
Install measuring device (031).
Insert brake band piston B1 (37) with one pressure spring.
It is sufficient if only one pressure spring is installed to adjust the play.
Screw in spindle of the assembly device (026).
Ensure that the pressure pin of the brake band piston B1 (37) is inserted in the brake band and that the radial lip-type sealing ring (39) is not damaged.

Fig 4: Identifying Assembly Device, Measuring Device And Brake Band Piston B1
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Insert locking ring (41).
Release and remove assembly device (026).

Fig 5: Identifying Locking Ring And Assembly Device
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Measuring device - 1st version

In order to be able to remove and install the locking ring (41) without loosening the screw plug or the transmission overload protection switch (S65), turn on one phase at the measuring device (arrow).

Fig 6: Locating Measuring Device
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Measurement and adjustment of play in brake band B1
Screw in the screw on measuring device (031) by hand until resistance is detectable.

Fig 7: Identifying Measuring Device
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Using a torque wrench, continue screwing in the screw, counting the number of revolutions until a torque of 1 Nm is reached.

The thread on the measuring device (031) has a 1 mm pitch so that one revolution is equivalent to a play of 1 mm.
Loosen assembly device and remove brake band piston, if necessary.

Fig 8: Identifying Measuring Device
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Adjust play by inserting or removing shims (136) on the pressure pin (38).

Shims are available as a spare part in thicknesses of 0.5, 1.0 and 1.5 mm.

Fig 9: Identifying Shims On Pressure Pin
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Install brake band piston cover (40) and second pressure spring (35) in place of the measuring device, insert locking ring and unscrew assembly device (026).

Fig 10: Identifying Second Pressure Spring, Pressure Spring, Brake Band Piston, Piston Cover And Assembly Device
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.