Kone MX20 - Page 27

KONE Maintenance Method
MX10 / MX20 MCP Procedures - ASME A17.1-2013 / CSA B44-13
© 2014 KONE Corporation PSK8-604-MX10/MX20
All rights reserved.
27 (-) 2014-12-15
Procedure Note
4. Adjust air gap at lower end, both sides.
• Housing side: Adjust air gap to 0.002 inch
[0.05 mm].
• Drive sheave side: Adjust air gap to 0.002
inch [0.05 mm].
5. Return to upper end and adjust air gap, both
sides.
• Housing side: Adjust air gap to 0.002 inch
[0.05 mm].
• Drive sheave side: Adjust air gap to 0.002
inch [0.05 mm].
6. Return to lower end and adjust air gap, both
sides.
• Housing side: Adjust air gap to 0.002 inch
[0.05 mm].
• Drive sheave side: Adjust air gap to 0.002
inch [0.05 mm].
7. Pick and drop brake several times, observing
how it picks. Brake should pick smoothly with
no hesitation or step and set with an
acceptable noise level.
If there is hesitation or step in pick, brake
may need adjusting or replacement.
• Hesitation or step in pick indicates binding
in brake. Turn adjusting screws slightly to
allow brake to pick freely.
• If brake cannot be made to pick
smoothly and consistently, it may be
necessary to replace brake assembly.
If brake sets with excessive noise, brake may
need further adjustment AFTER ensuring that
brake shoe is not dragging.
• If brake sets with unacceptable noise
level, four adjusting screws can be
adjusted equally to reduce air gap and
minimize brake set noise. Caution! Making
this adjustment risks brake shoe dragging
on drum at high spots.