Bukh DV10, Workshop Manual

Page: 267 / 306

R23
009W2229-R01
Measuring of Tapered Roller Bearing tightening on
Input and Output Shafts without Measuring Gauge.
1 = Dial indicator holder 2 = Input shaft 3 = Dial indicator 4 = Driving arrangement
It would be an advantage, if the input shaft and the output shaft are measured individually for
the adjusting of the tapered roller bearing tightening. The measuring procedure is the same
both for input as well as for output. However, only the procedure for the input shaft is
described here. When measuring the output shaft it should be as described at picture no. 31.
Turn the shafts when measuring in order to compensate for possible deviations, and a fixed
point of measuring should be chosen for marking of the axial clearance.
Heat the bearing bore to about 85°C and fit the outer collar of the tapered roller bearing with
Loctite no. 601.
In order to be able to adjust the tightening of the roller bearing it is necessary that the shafts
show axial clearance. This is obtained by fitting intermediate washers which are 0.2 mm
thinner than those which were removed and marked as described at picture no. 16.
Heat the bearing bore to about 85°C and fit the bearing outer collar without Loctite in the
bore.
Place the input shaft in the housing after the cooling and fit the lower gearbox half without
any packing and drive in the guide pins.
Fit the contact point of the dial micrometer on the front of the input shaft and turn the shaft
backwards and forwards. During this the shaft should show axial clearance.
If there is no clearance shown. fit thinner washers under the bearing outer collar.
Add the roller bearing tightening of 0.03 – 0.08 mm plus further 0.02 mm (liquid jointing com-
pressed) to the measured axial clearance and thus we get the thickness of the intermediate
washer.