71 / 151Issued: 16.06.2010 Version: MA KL 1500-3 T S 141215 V1 en
10. Adjustment
10.1.2 Adjusting the backlash
Procedure 1. Slacken the three M16x45-10.9 Allen screws (>>> Fig. 10-4) (1) and the
M16x55-10.9 Allen screw (3).
2. Shift the intermediate plate on the carriage by turning the eccentric slightly.
3. Turn the eccentric counterclockwise until the tooth flanks of the pinion are
in full contact with both flanks of the rack without play.
4. Turn the eccentric clockwise. The tooth flanks of the pinion now only make
contact on one side. On the other side there is a backlash, which must be
within the permissible range between 0.2 mm and 0.24 mm. Measure the
backlash with a feeler gauge.
5. Tighten the M16x45-10.9 Allen screws (1) and the M16x55-10.9 Allen
screw (3) with a tightening torque of M
A
= 250 Nm.
6. Measure the backlash again, in accordance with Section
(>>> 10.1.1 "Measuring the backlash" page 70). Re-adjust the backlash if
required.
Turning the eccentric counterclockwise reduces the size of the back-
lash.
Turning the eccentric clockwise increases the size of the backlash.
10.2 Adjusting the rollers
Description The carriage is guided by six centric and six eccentric rollers on two tracks.
The centric rollers are indicated by a “Z” and eccentric ones are indicated by
an “E”. The centric side rollers are always located on the fixed bearing side.
All carriage rollers must be in contact with the tracks. An eccentric is located
in the square of the eccentric rollers (E) (>>> Fig. 10-5). By turning the eccen-
tric with a torque wrench it is possible to position the eccentric roller (E) on the
track in a defined manner.
Fig. 10-4: Intermediate plate
1 Allen screw 3 Allen screw
2 Intermediate plate 4 Eccentric
The type of wheel bearing is indicated on the end face of the square of each
roller.
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