BRADEN CH SERIES Installation Maintenance And Service Manual page 24

BRAKE CYLINDER ASSEMBLY
1. Lubricate O-rings and backup rings with oil and install
them on the brake piston. The concave surface of the
backdrop ring must be next to the O-ring. Let the
assembly set for 10 minutes in order for the O-rings
and backup rings to return to their original shape.
2. Here are the backup rings and O-rings installed cor-
rectly. The backup rings must be to the outside of the
O-rings.
3. Lubricate the outside of the piston with oil or grease.
4. With the brake cylinder resting on its large end, insert
the piston into the brake cylinder. Be careful not to cut
the O-rings or backup rings.
5. Install the eight (8) belleville springs over the spring
guide. The first one should rest against the snap ring
on the spring guide, with the concave side facing the
snap ring. The second spring should be installed with
its convex side facing the snap ring. Alternate the
remaining six (6) springs until all eight (8) are in place.
6. Next, place the backup plate over the spring guide so
that it rests on the top spring. Then, insert the spring
guide, springs and backup plate into the brake cylin-
der.
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