Elliott Roto-Jet 0420, Operating And Maintenance Instructions Manual

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0420 Roto-Jet  

FLEXSHAFT REPAIR

Flexshaft Repair Instructions
Instructions for Both the Tool and Motor Couplings
Using the Elliott Crimping Block Assembly
Part Number W900-00

1.  Cut the outer casing back approximately 1” (25.4mm) for clearance to allow the core to be cleaned 

up at the break.  Grind the end of the core taking care not to overheat the wire strands.  Using a 
hacksaw to square the broken end will cause the wire strands to flex and unwind. 
Note:  The compression fitting on the motor coupling should not be removed from the casing, if the 
excess length of casing is trimmed from the tool coupling end of the flexshaft.

2.  Slightly bevel the circumference of the core to remove any burrs.
3.  Insert the replacement coupling onto the core.  Be sure the core is fully engaged to the full drilled 

length of the coupling. 
Note:  When replacing the motor coupling, insure that the square washer has been placed onto the 
core before inserting the motor coupling.

4.  Locate the assembly of the core and coupling in the proper hole location of the crimping block.  

Position the assembly in the crimping block with the core end of the coupling, flush with the side of 
the block.

5.  Insert the drive pin in the proper hole above the coupling to be crimped.
6.  Strike the pin with a hammer.  Care must be taken with this operation, excessive force will deform 

the coupling and cause the core to distort and unwind.

7.  For flexshaft sizes 0513, 0514 and 0515, rotate the coupling in the crimping block approximately 60° 

and strike the pin again.  Repeat this operation around the coupling.  For flexshaft sizes 0511 and 
0512, rotate the coupling in the crimping block approximately 120° and strike the pin again.  Repeat 
this operation around the coupling.

8.  The coupling is now secure with equally spaced crimping locations holding the core.