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Gun Safes and Vault Doors Vault Pro USA

Butterfly Knob is no Longer Springy

When I turn the dial to zero and turn the butterfly knob,
it is no longer springy and is loose.

When I turn the dial to zero and turn the butterfly knob, it is no longer springy and is loose.

Applicable to: 8400 Mechanical spin dial lock

Problem:
When I turn the dial to zero and turn the butterfly knob, it is no longer springy and is loose.

Cause:
The over center spring in the cam has broken.

Solution:
You will need to contact a professional safe and vault technician for assistance.

For Additional information please call Vault Pro USA: 800-299-6929
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