AR27.50-P-0600-06SYZ Measure End Play Between Park Pawl Gear and Grooved Ball Bearing

AR27.50-P-0600-06SYZ Measure End Play Between Park Pawl Gear and Grooved Ball Bearing
- TRANSMISSION 722.96 in MODEL 204, 212, 216, 218, 221









126 589 04 31 00
Parallel support





A digital-vernier caliper is required to determine the shim size.

Clean

1 Thoroughly clean the faces and contact surfaces on the transfer case drive pinion case, thrust plate on the park pawl gear, transmission output shaft, guide sleeve and sealing surface on transmission housing.

Do not use any sharp-edged tools or abrasive paper as otherwise the sealing surface shall be damaged.

Pay attention to absolute cleanliness otherwise an incorrect measurement will occur which will result in destruction of the automatic transmission.





Measure overall height (dimension a)

2 Measure and note down overall height (dimension a) using vernier caliper (01) as shown.

Overall height (dimension a): Measure from guide sleeve (3) through transfer case drive pinion (4) to the parallel gauge (02).

01 Vernier caliper
02 Parallel support
3 Guide sleeve
4 Drive pinion of transfer case

a Dimension A





Measure partial height 1 (dimension b)

3 Measure and note down partial height 1 (dimension b) using vernier caliper (01) as shown.

Partial height 1 (dimension b): Measure from face on transmission output shaft (7) to thrust plate on park pawl gear (6).

When measuring partial height 1 (dimension b), neither the guide sleeve (3) nor the shim may be installed.

01 Vernier caliper
5 Transmission housing
6 Thrust plate on park pawl gear
7 Transmission output shaft

b Dimension B





Measure partial height 2 (dimension c)

4 Mount transfer case drive pinion (4) onto transmission output shaft (7) and check it is correctly seated in the transmission housing (5).
5 Measure and note down partial height 2 (dimension c) using vernier caliper (01) as shown.

Partial height 2 (dimension c): Measure from face on transfer case drive pinion (4) to face on transmission output shaft (7).

When measuring partial height 2 (dimension c), neither the guide sleeve (3) nor the shim (27s) may be installed.

When measuring partial height 2 (dimension c) make sure that the vernier caliper (01) is located on the transmission output shaft's (7) face and that it is not measured on the threaded hole's chamfer.

01 Vernier caliper
4 Drive pinion of transfer case
5 Transmission housing

c Dimension C





6 Calculate shim (27s) size :

The following values must be added up first and then the overall height (dimension a) subtracted from the result:

+ Partial height 1 (dimension b)
+ Partial height 2 (dimension c)
+ Specified play/axial play check values (dimension: 0.2 to 0.4 mm)
Overall height - (dimension a)
= Shim size (27s)

3 Guide sleeve
5 Transmission housing
27s Shim

Calculation example for shim (27s) size:
+81.97 mm (partial height 1 (dimension b))
+85.73 mm (partial height 2 (dimension c))
+0.3 mm (specified play/axial play check values)
-166.47 mm (overall height (dimension a))
= 1.53 mm (shim size (27s))

7 Adjust axial play, to do so fit the determined shim (27s) over the transmission output shaft (7) onto the thrust plate on the park pawl gear (6).

Shims (27s) are available in sizes ranging from 1.4 - 2.1 mm in steps of 0.1 mm. In the above-mentioned calculation example a shim size of 1.5 mm is installed