window balancer assembly

Quick Learner from 62040
I need to know what to get. my window has no markings or numbers the only thing I could find was a number 5 on a coil. I'm pretty sure this is a very old window and I need assistance on this urgently.
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Bob
Bob from SWISCO
SWISCO
Expert

Thanks for posting. It appears you have an older version of the 15-140 Pivot Shoe. This shoe interfaces with Series 150 Coil Balance springs. A spring stamped '5' means it can be replaced with an S150-5 5 pound spring. For new coil housing, you can use the 15-143, 15-144, 15-145; these parts 'sandwich' around each individual coil. Let me know if you have further questions. 

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