(Topic ID: 237819)

Stepper springs


By DCRand

50 days ago



Topic Stats

  • 4 posts
  • 3 Pinsiders participating
  • Latest reply 50 days ago by DCRand
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    #1 50 days ago

    Still being somewhat of a newbie, have a situation that has come up a number of times. Have taken various stepper units apart on different machines, then cleaned all the gunk out, and NOT added any lube. Most of the time the stepper works fine, and the coil spring always seems to work well at the proper tension. But in a few cases, the stepper still didn't work properly and usually because it seemed the smaller tension springs just weren't strong enough, even though the unit was completely clean and otherwise moved freely.

    In these cases, is it just old springs that have lost some pulling power? Is shortening the spring, which I have done a few times, criminal behavior? Should the springs be replaced with new? Or is it something I am missing in diagnosing the problem?

    #2 50 days ago
    Quoted from DCRand:

    Still being somewhat of a newbie, have a situation that has come up a number of times. Have taken various stepper units apart on different machines, then cleaned all the gunk out, and NOT added any lube. Most of the time the stepper works fine, and the coil spring always seems to work well at the proper tension. But in a few cases, the stepper still didn't work properly and usually because it seemed the smaller tension springs just weren't strong enough, even though the unit was completely clean and otherwise moved freely.
    In these cases, is it just old springs that have lost some pulling power? Is shortening the spring, which I have done a few times, criminal behavior? Should the springs be replaced with new? Or is it something I am missing in diagnosing the problem?

    Something to consider is whether the correct spring is installed. You never know who has previously had their grimy hands on these old machines and they may have put in whatever random spring they felt like. I noticed this once, I ordered the correct part number spring (these are cheap) according to the manual then when I compared the new one with what was on the machine they were not the same.

    #3 50 days ago

    PBR sells replacement spring kits.
    http://www.pbresource.com/springkit.html

    #4 50 days ago

    Thanks both for the info. Will check PBR's kits.

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