Determine shim for countershaft

Test and adjustment values for gear set

 Housing

710 589 00 21 00

Bracket

Dial gauge with magnet

Bracket

710 589 02 63 00

710 589 01 63 00

N26.50-2138-01

1 Mount front section of transmission housing (2) onto rear section of transmission housing (3)

 Do not apply any sealant to the contact surfaces of front section of transmission housing (2) and the rear section of transmission housing (3)
The output flange (4) on the  fixture (5) must face downwards.
The front section of the transmission housing (2) must not get caught on the shift rods.

2 Bolt the front section of the transmission housing (2) to the rear section of the transmission housing (3) using 4 bolts, .

3 Rotate the transmission through 180°.

 The input shaft must rotate freely.

N26.50-2041-01

4 Turn output flange back and forth several times.

 This makes the front tapered roller bearing free of clearance.

5 Mount the  holder and  dial indicator with magnet onto the front section of the transmission housing (2).

 The locating pin must be seated at a pretension of 2 mm on the frontal area of the countershaft's toothed gear.

6 Set scale of dial gage to "0".

7 Insert a suitable screwdriver each through the two holes
in the front section of the transmission housing (2) below the countershaft's toothed gear.

8 Rotate the countershaft and - using the screwdriver - lift it up to the end stop. Read off the countershaft's play and note it down.

9 Determine shim thickness.

 To do so add up the mean value of the permissible pretension of the tapered roller bearings on the countershaft and the measured value.

10  Remove dial indicator with magnet and the  holder.

11 Rotate transmission through 180° and
detach front section of the transmission housing (2) from the rear section of the transmission housing (3).