Troubleshooting guide

Clutch and Brake Springs

With the brake engaged (full limit of output), the input hub should be free to rotate by hand.

With the clutch engaged, the input and output hubs should rotate together. If the unit does not

rotate in either of these modes, the clearance between the hubs of the unit on the shaft may

have been disturbed or damaged. See Assembly/Disassembly instructions for re-adjusting.

Listed below are additional checks to be made if the clutch does not function correctly:

PROBLEM CAUSE AND REMEDY

A. Drive Spring may be broken at

crossover point from an overload

caused by a jam. Replace Spring and

Clutch Brake does not drive check Hubs for damage.

but Input turns B. Collar may not snap forward

because of foreign matter

restricting movement. Clean unit.

C. Actuator does not pull in. See

Actuator section.

A. Spring tang broken off Drive

Spring, not allowing Clutch to

disengage while Brake is engaged.

Replace Drive Spring.

Clutch-Brake jams and B. Clutch output bound up. Check

stalls Input Motor clearance between Output Hub and

Brake Hub.

C. Completely out of adjustment

caused by losing an internal Spring

Tang. Replace Spring.

A. Not enough inertia to actuate

brake.

Output does not repeat B. Tang broken off Brake Spring,

stopping point replace SPring.

C. Adjust Collar Locking Screw,

may be loose allowing Adjusting

Screw to rotate.