Dial at least 2 times left to 0, starting anywhere on the dial.

Dial right to locate a pair of "spongy" contacts. Note the number under the opening index where each contact occurs.

Contacts of approximately 40 and 50 indicate that the accelerator spring is loaded on the spring hook stud as it should be.

A higher contact point that is close to 60 indicates that the accelerator spring is NOT loaded on the spring hook stud.

Check my Accelerator Spring?


 

You can use the following sequence to verify that the accelerator spring is NOT unloading from the spring hook stud as it should:

Dial left at least 2 times to 45, starting anywhere on the dial.

Dial right directly to 0. Push in and let out on the dial.

Continue dialing right to locate a "spongy" contact. Note the number under the opening index where the contact occurs.

Dial left to locate a second "spongy" contact. Note the number under the opening index where the contact occurs.

Contacts of approximately 30 and 60 indicate that the accelerator spring IS unloading as it should.

Contacts of approximately 40 and 50 indicated that the accelerator spring IS NOT unloading when it should.

Check my Accelerator Spring?


 

To encourage a reluctant accelerator spring to load onto the spring hook stud, turn the dial (starting anywhere) to 45. Using a soft-faced hammer, strike the dial ring sharply where its edge is closest to the spring hook stud in the lock case. Reversed (x-ray) views of the lock case are shown for each possible hand of mount to assist you in determining where to strike the dial ring.

Check my Accelerator Spring?

Check my Accelerator Spring?

 

 

Strike the dial ring,
never the dial,
as the spindle may shear.

 

 

 


 

Applicable to:
8500 Mechanical spin dial lock

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