pulled to the stator by magnetic force. With rotary motion of the hub, friction will develop
between the brake disc and both the lining and the steel body of the stator (hybrid friction).
CAUTION! There is line voltage at the brake solenoids.
Adjusting the air gap
The small solenoid brake is used, as a shaft lock only, so there is hardly any abrasion.
After slackening the headless screw (hexagon key 3-mm across the flats) of the hub and
pulley arrangement, the air gap of 0,2-mm is set by lateral movement on the motor shaft.
With the big solenoid brake, the clearance between the stator and brake disc can be set in two
ways:
1) Shims inserted between the brake stator and the welded part of the vibratory assembly.
For this, recommended alternative, at least two shims of 0.2-mm (HOFMANN Mat-Nr.
6417655) or 0.5-mm (HOFMANN Mat-Nr. 6417656) plate thickness must be available.
2) Removal of washers between the brake hub and support disc on the main shaft.
Insertion of shims (spacer plates)
Tools required: Philips screwdriver, 0.1 - 1.0-mm feeler gauge, hexagon key 5-mm.
Proceed as follows:
a) Remove the weight tray.
b) Determine and note the size of the clearance between brake disc and stator using the
feeler gauge.
c) Slacken the four hexagon socket-head screws holding the stator but do not
remove them.
d) Insert shims of the thickness to get a clearance 0.5
+/- 0,1
mm.
e) Tighten the hexagon socket head screws and check the clearance.
f)
Switch on the machine and check the function of the solenoid brake using
code C73. Make sure that the brake disc comes completely free of the stator
when the brake current is switched off. Otherwise, the unbalance measuring
results will be falsified.
g) Check the alignment of the encoder board to the code strip at the big pulley.
Correct if necessary.
h) Put back, the weight tray and fasten it.
Removal of washers
Tools required: Philips screwdriver No. 2, feeler gauge 0.1 to 1.0-mm,
hexagon keys 2,5-mm and 5-mm across the flats.
Carry out the following steps:
a) Remove the MZV-p adaptor from the main shaft.
b) Take off the weight tray (machine cover).
c) Determine and note the size of the clearance between brake disc and stator.
d) Take off the multi-vee belt from the big pulley.
e) Unscrew the 4 hexagon socket screws (5-mm) at the clamping nut and pull out the
clamping nut together with tie rod.
f)
Loosen three headless setscrews M3x10 (use hexagon key 2,5-mm) at the set collar.
Push the set collar inwards and remove the circlip and then the set collar from the
main shaft.
g) Pull off the drive pulley and the ball bearing from the main shaft.
h) Pull off the brake hub and lever out the sunken key from the main shaft.
Seite 25 von 99
Summary of Contents for Snap-on Y2k
Page 1: ...SERVICE of the Y2k balancing platform Seite 1 von 99 ...
Page 2: ...The vibratory assemblies of the Y2k balancing platform L R L R S S M Seite 2 von 99 ...
Page 32: ......
Page 35: ...Seite 35 von 99 ...
Page 66: ...Seite 66 von 99 Figure 1 JBEG B9000 B9450 User Interface ...
Page 67: ...Seite 67 von 99 Figure 2 JBEG B9460 User Interface ...