Troubleshooting guide

To disassemble the clutch-brake unit (124) it will first be necessary to remove the drive pulley

(125) from the stitcher by removing the V-belt (30), retaining ring (51), and clutch anchor screw (27).

Disconnect the ground and solenoid wires, and swing the anchor strap (24) clear of the drive pulley

assembly and slide it off of the drive shaft. Remove the three screws (126) connecting the drive pul-

ley to the clutch-brake unit.

When disassembling the clutch-brake unit, always mark the spring tang locations with reference to

which slots they go in if the same springs are to be used for reassembly. To disassemble the clutch-

brake unit, proceed as follows:

Release Actuator Lever so that clutch is engaged and brake released. Remove Retaining Ring and

Shim Washer, if any, from the input Hub end. Remove input Hub by rotating opposite to the drive

direction. Remove Retaining Ring and Shim Washer, if any, from the Mounting Plate end.

Remove Output Shaft Springs and Control Collar assembly by rotating Output Shaft in the drive

direction (DO NOT DISASSEMBLE BRAKE HUB FROM MOUNTING PLATE). Remove Control

Collar from the Output Shaft and Spring assembly by extracting toward the Brake Spring end.

Replace Clutch, Brake and Anti-Backup Springs as required. Assemble Springs concentric and

square to the Output Shaft. Assemble Control Collar over the Output Shaft and Spring assembly by

inserting from the Brake Spring end (it will be necessary to extend Brake Spring using long nose pli-

ers). Place the Brake Spring tang in any one (1) of the nine (9) Control Collar slots at random.

Assemble Output Shaft, Springs, and Control Collar assembly to the Mounting Plate assembly

by rotating Output Shaft in the drive direction. Assemble Retaining Ring to Output Shaft at the

Mounting Plate end (smooth surface facing Brake Hub). Check end play between Hub and Retaining

Ring with feeler gauge. There should be 0.004" to 0.010" end play. Use Shim Washer to adjust.

Rotate Output Shaft in the drive direction until it reaches a full brake position. With the Clutch

Spring Tang not in slot, insert the Input Hub by rotating opposite to the drive direction. Select the

one (1) of ten (10) Control Collar slots for the Clutch Spring Tang that will provide a 0.38" to 0.50"

circumferential overtravel of the Control Collar when released.

Always disconnect the power supply before

making any adjustments or servicing the stitcher

WARNING

Disassembly (See Figure 5)

Assembly (See Figure 5)