Checking adjustment dimension of drive pinion - AR35.31-P-0550-18T

TEST VALUES FOR REAR AXLE DIFFERENTIAL

Number	Designation		Model 171.456	Model 211.006/054/056/065/082/087/092/206/254/256/265/282/287/292/606, Model 211.004 with code 450
BE35.31-P-1001-03C	Permissible deviation from the specified adjustment dimension on the end face of the drive pinion	mm	-0.02...+0.01	-0.02...+0.01

TEST VALUES FOR REAR AXLE DIFFERENTIAL

Number	Designation		Model 219.356	Model 230.467
BE35.31-P-1001-03C	Permissible deviation from the specified adjustment dimension on the end face of the drive pinion	mm	-0.02...+0.01	-0.02...+0.01

Fig 1: Identifying Intermediate Rings (140 589 41 63 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 2: Identifying Dial Indicator (000 589 38 19 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 3: Identifying Measuring Device (126 589 00 21 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fit magnetic disk (052c) 140 589 41 63 00, part 05, onto end face of drive pinion (47) to measure adjustment dimension "A".

Fig 4: Identifying Magnetic Disk Position On End Face Of Drive Pinion
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Insert the left measuring device ring (052e) 140 589 41 63 00 part 01 from the outside inwards exactly up to the stop in the rear axle housing.
Insert the right measuring device ring (052d) 140 589 41 63 00 part 02 from the inside outwards exactly up to the stop in the rear axle housing.

Fig 5: Identifying Left And Right Measuring Device Rings
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Insert dial gauge (052a) with measuring pin in the measuring device (052).
Press the adjusting piece (052b) 126 589 00 21 00 part 10 against the measuring device (052) and adjust the dial gauge (052a) to "0" under 2 mm preload. Tighten the clamp screw and when doing so check the "0" position of the dial gauge (052a), adjust if necessary.
The measuring pin for the dial gauge (052a) is screwed into the adjusting piece (052b).

Fig 6: Identifying Dial Indicator On Measuring Device
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Insert the measuring device (052) through the left bore in the rear axle housing.
When inserting measuring device (052) into rear axle housing, ensure that measuring pin of dial indicator is not damaged in bore.

Fig 7: Inserting Measuring Device In Left Bore From Rear Axle Housing
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Read off adjustment dimension "A". The adjustment dimension must be within the tolerance.

Fig 8: View Of Measuring Device And Rear Axle Housing
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The adjustment dimension "A" is the design basic adjustment of the drive pinion, whereby the basic deviation "a" must be within the permissible tolerance in the positive (+) or negative (-) direction. The basic deviation "a" is the dimension which is indicated on the end face of the drive pinion.

If the adjustment dimension is outside the tolerance, the shim installed should be reground or a new shim of appropriate thickness should be installed. However, it is absolutely essential to use a new spacer sleeve for the tapered roller bearings.

Fig 9: Identifying Drive Pinion Adjustment Dimension
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Remove measuring device and magnetic disk from rear axle housing.