Brake Clutch Service - BRADEN CH SERIES Installation Maintenance And Service Manual

BRAKE CLUTCH SERVICE

DISASSEMBLY
1. Remove the snap ring and sprag bushing retainer from
one end only.
2. Pull the inner race out. Examine the race for scoring,
wear or indentations caused by the sprag cams. If the
inner race is not completely smooth, the entire brake
clutch assembly must be replaced.
3. Use a screwdriver and mallet to remove the sprag
bushing from one end of the outer race. There are four
special cut-outs in the bushing for this purpose. Be
careful not to damage the bushing inside surface. If a
bushing's inside surface is damaged or shows wear,
replace it.
4. Next, slide the sprag clutch out, inspect the sprag
clutch closely for abnormal wear, cracks, pitting or cor-
rosion. Check small clips for breakage or bright spots;
the signs of excessive wear. Unless the outer race or
remaining sprag bushing is damaged or shows exces-
sive wear, there is no need for further disassembly. If
disassembly is necessary, remove the bushing accord-
ing to the procedure covered in Step No. three (3). All
brake clutch assembly parts should be thoroughly
cleaned and inspected before assembly.
WARNING
CAUTION
!
The polished surfaces of the races and sprag cams
must be perfectly smooth to insure positive engage-
ment of the clutch. The slightest defect may reduce
brake clutch effectiveness, which could result in prop-
erty damage, severe personal injury or death. It is
generally recommended to replace the entire brake
clutch assembly if any component is defective.
ASSEMBLY
1. Press a sprag bushing into the outer race, using a
mechanical or hydraulic press. A flat plate of approxi-
mately the same diameter as the bushing flange out-
side diameter should be placed between the press and
bushing during assembly to protect the bushing. Be
certain the bushing flange is against the shoulder in
the outer race.
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