Calculating shim and inserting into rear axle housing - AR35.31-P-0550-13T

Use data sheet.

Data sheet, Adjusting rear axle gear set: 

Order no. 6516 7422 00 D 

1. Clamp commercially available dia. gauge in gauge stand and mount on measuring plate.
2. Adjust dial indicator at measuring body (051b) 140 589 14 21 00 part 01 to "0" under approx. 3 mm preload, thus the measuring body height "B1" is adjusted.
   Fig 7: Adjusting Dial Indicator At Measuring Body

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
3. Fit tapered roller bearing outer race (46b) on tapered roller bearing inner race of drive pinion (47) and attach magnetic disk (052c) 140 589 41 63 00, part 03.
4. Insert drive pinion (47) in the measuring plate and measure the drive pinion height with tapered roller bearing and magnetic disk (052c).

   Enter number 1 in the data sheet 

5. Read off the difference "B" between the measuring body height "B1" and drive pinion height with magnetic disk (052c) and read off in the data sheet under number 1 (e.g. 1.79 mm).
   Fig 8: Measuring Drive Pinion Height

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

   Enter number 2 in the data sheet 

6. Read off basic deviation "a" at end face of drive pinion (+ or -) and enter under number 2 (e.g. +0.06) in data sheet.

   Calculate interim sum in the data sheet 

7. Add (+) or subtract (-) numbers 1 and 2, depending on the prefix (+ or -) of the value on the drive pinion (47)
   Fig 9: Identifying Basic Deviation Of Drive Pinion

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
8. Insert the measuring body (051b) part 01 of the measuring device 140 589 14 21 00 in the rear axle housing.
9. Screw down measuring body (051b) with fastening piece 140 589 14 21 00 part 02 and hexagon bolt.
   Fig 10: Identifying Measuring Body

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
10. Insert the left measuring device ring (052e) 140 589 41 63 00 part 01 from the outside inwards exactly all the way into the rear axle housing.
11. Insert the right measuring device ring (052d) 140 589 41 63 00 part 02 from the inside outwards exactly all the way into the rear axle housing.
    Fig 11: Inserting Left And Right Measuring Device Rings

    Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
12. Insert dial indicator (052a) with measuring pin into the measuring device (052) 126 589 00 21 00.

    The measuring pin for the dial indicator (052a) is screwed in on the adjusting piece (052b) 126 589 00 21 00 part 10.

13. Press the adjusting piece (052b) 126 589 00 21 00 part 10 against the measuring device (052) and adjust the dial indicator (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.
    Fig 12: Identifying Dial Indicator On Measuring Device

    Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
14. 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 13: Inserting Measuring Device In Left Bore Of Rear Axle Housing

    Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

    Enter number 3 in the data sheet 

15. Measure the difference "A1" between the adjusted gage dimension and end face of measuring body and enter in the data sheet under number 3 in the positive (+) or negative (-) direction (e.g. -0.01 mm measured and thus negative direction).

    The specification of positive (+) or negative (-) direction is related to the direction of rotation of the dial gage pointer. The counterclockwise direction of rotation means negative direction and clockwise means positive direction.

    Calculate the thickness of the shim "S" in the data sheet 

16. Add (+) or subtract (-) interim sum of the values from number 1 and number 2 as well as the value from number 3. The calculated value reveals the thickness of the shim.
    Fig 14: Identifying Measuring Body, Measuring Body Height And Center Of Ring Gear

    Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
    EXAMPLE
    
    

    1st	Measure difference between measuring body height "B1"  and the height of the drive pinion with magnetic disk "B"		=		1.79
    2nd	Read off basic deviation "a"  on drive pinion		= =	+ -	0.06
    	Intermediate total		=		1,85
    3rd	Measure the difference "A1"  between regulated gauge dimension and front face of measuring body	Negative direction	=	+	0.01
    		Positive direction	=	-
    	Thickness of shim "S"		=		1.86

17. Remove the measuring device (052) and measuring device races (052d, 052e) from the rear axle housing. Detach measuring body.
18. Insert the shim with the calculated shim thickness "S" into the rear axle housing.

Only hardened shims may be used. They are available in various thicknesses (see parts list). If necessary, grind down the shim accordingly.