Atmospheric Suspension Spring Replacement Instructions
Ver2.0 2/01 © 2001- 2018 Dennis Kaye. May not be reproduced without author’s permission.
Pull the regulator clamp off of the broken spring. There may be a brass "Centering Clamp" inside the regulator clamp.
Use a razor blade and insert into the screw clamp as shown. Tap lightly so that the clamp opens and the blade stays inside keeping the clamp open. Notice that the rear of the blade is resting on the table surface and the clamp is held on an angle.
The New Steel
Insert the new steel into the regulator clamp from the round side till it reaches resistance by hitting the other (duck bill) side. With a pair of flat tweezers, firmly grasp the spring just 2mm from the clamp, and with firmness, slightly wiggle and push the new spring through the opening of the duck bills. Do not pry the opening wider.
Grab the spring from the duck bill side and pull the spring through till the clamp is about 2” from the end of the spring.
Carefully place the end of the spring (the side coming through the duck bill side of the regulator clamp) into the screw clamp, precisely centered.
Swing the blade back and forth till it comes out, closing the jaws on the spring.
Make certain the spring is centered in the jaws of the screw clamp and also centered coming out of the regulator clamp.
Place the spring into the pendulum tube and check for poise. Adjust as usual. The rest is a conventional installation.
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