BRADEN CH SERIES Installation Maintenance And Service Manual page 21

BRAKE CYLINDER SERVICE
1. Turn the brake cylinder on end with the large end
down. Use the special compression tool or a shop
press to compress the backup plate in order to remove
the retaining ring.
CAUTION
CAUTION
!
CAUTION: Make certain that the threaded rod of the
compression tool fully engages the lower plate. If a
press is used, be careful not to damage any parts by
applying too much pressure.
Remove the retaining ring with snap ring pliers. Be
careful to not let the pliers slip out of the retaining ring.
Release the compression tool by holding the threaded
rod stationary while backing off the nut.
2. Remove the spring guide. The backup plate, belleville
springs and spring guide will come out together.
Closely inspect the spring guide for damage that might
prevent the springs from moving freely in an axial
direction. Also inspect the springs for cracks and
material displacement. Replace any defective parts.
3. Turn the brake cylinder on end with the large end up.
Remove the spiral retaining ring and lift out the brake
piston plate.
!
4. Turn the brake cylinder over and pull the piston out.
Remove and discard the O-rings. Inspect the backup
rings for nicks or cuts, and replace if necessary. Be
careful not to damage the O-ring groove surfaces.
5. Inspect the brake cylinder for nicks and scratches on
the O-ring sealing area. Check the internal splines for
notches that might prevent the brake discs from sliding
freely. Be careful not to damage the O-ring sealing
surfaces.
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