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6. Lubricate the brake piston seal and motor support sealing
surface with petroleum jelly or hydraulic oil. Install new
piston seal to motor support, seal lip down.
OLDER STYLE BRAKE CYLINDER
7. Install brake springs into brake cylinder
NEW STYLE BRAKE CYLINDER
7A.When using the new style brake cylinder without milled
spring pockets, install the spring spacer, then the brake
springs.
8. Install pressure plate into brake cylinder followed by the
piston backup ring.
Th
e close-
fi
tting piston backup ring
may be depressed slightly to one side to lodge the backup
ring in the brake cylinder bore and temporarily hold the
pressure plate and springs in place while you lower the
brake cylinder over the motor support.
9. Apply petroleum jelly to the entire sealing surface of the
brake cylinder and to the piston seal. Install the brake
cylinder over the motor support being careful to avoid
damaging the piston seal or motor support O-ring. (A
press may be necessary to avoid cocking the brake cylin-
der during installation.)
10. Install motor support capscrews and evenly tighten to
recommended torque.
Always use the molded spring spacer with the new brake
cylinder.
Th
e brake springs must be properly positioned
by the spring spacer. Failure to install the spring spacer
may allow the springs to contact each other and become
damaged.
Th
is could result in loss of load control, prop-
erty damage, injury or death.