Warner Electric CB & Super CB Series Wrap Spring Clutches & Brakes - Manual (Page 5)

Warner Electric Europe • +33 (0)2 41 21 24 24 P-2026-WE • 11/12 5
2.1 DISASSEMBLY
1.
Brake engaged, input hub (2) freely rotatable, remove circlip (1).
2.
Remove input hub (2) by rotating in the drive direction (remove anti-overrun spring (5), if present).
3.
Control collar (3), released (actuator not in contact with STOP). Remove circlip (1) at mounting
plate (10).
4.
Remove output sleeve (6) by rotating in the drive direction.
5.
Remove anti-backup spring (7). DO NOT disassemble brake hub (9).
6.
Remove control collar (3) by extracting towards the control tang of the brake spring (8).
7.
Remove springs (clutch and brake).
2.2 REMOVAL OF ANTI-OVERRUN SPRING (5)
All CB units are normally equipped with an anti-overrun spring (5). If the anti-overrun is not required, e.g. the
input hub (2) must be able to rotate in both directions. execute the following :
1.
Mark the spring tang location on control collar (3).
2.
Fully wrap down the brake spring (output in stop position).
3.
Remove circlip (1) and input hub (2).
4.
Remove the anti-overrun spring (5).
5.
Assemble the input hub (2) with circlip (1).
6.
Check the overtravel specification (OT).
2.3 ASSEMBLY
1.
Assemble brake spring (8), and clutch spring (4) on sleeve (6) (output tangs - clutch, brake - in the sleeve).
2.
Assemble control collar (3) over brake spring (8), by extending control tang of the brake spring by using long
nose pliers (put pliers into collar (3) first).
3.
The control tang of the brake spring (8) is located in one of the nine slots of the control collar. The control
tang of the clutch spring (4) - slightly precharged -lies in one of the ten slots.
4.
Assemble anti-backup spring (7) into output hub.
5. Assemble preassembled sleeve (6) into mounting plate (10) with brake hub (9) by rotating in the drive direction
and assemble circlip (1) at mounting plate (10).
6.
Rotate output into STOP position. Assemble input hub (2) (not secured).
7.
Differential setting of clucth/brake (overtravel OT). Actuator is in contact with stop of control collar (3)
Rotate output into STOP position. Pull backwards input hub (2), remove control tang of clutch spring (4) out
of slot of control collar. Open clutch spring (4), to obtain distance OT. Push spring and input hub (2) back
again. Lift actuator, the control collar (3) should overtravel distance OT. If OT is not reached, put control
tang of brake spring (8) in another of the nine slots and repeat procedure until OT is reached.