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(Topic ID: 225899)

How to adjust stepper unit wiper

By paddlepaw

5 years ago



Topic Stats

  • 6 posts
  • 3 Pinsiders participating
  • Latest reply 5 years ago by bonzo71
  • No one calls this topic a favorite

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#1 5 years ago
OP
 
JLG

paddlepaw

Pinside member

7y 64,550 262

On my '77 WMS big deal the 10,000 bonus light is lit on a new game. I traced it to the stepper wiper being off by one position. I'm not sure how to move it back one position. Does anyone know how to do that?

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#2 5 years ago
 
???

currieddog

Pinside member

US Springfield, MA

7y 63,550 3,312 6

Not sure what the other side looks like, but here is some good reading on steppers by Clay: http://www.pinrepair.com/em/index2.htm#steps

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#3 5 years ago
 
???

bonzo71

Pinside member

US Boothwyn, PA

11y 57,300 1,248 32

Loosen these 2 screws and the whole brown bakeliet assembly can be twisted either way...tight screws when in the correct position.

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#4 5 years ago
 
???

bonzo71

Pinside member

US Boothwyn, PA

11y 57,300 1,248 32

double post..ignore

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#5 5 years ago
OP
 
JLG

paddlepaw

Pinside member

7y 64,550 262

Ahhh, i didn't have anything that would fit those because the small metal disks are really in the way. I'll find the right tools and try that. Thanks!

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#6 5 years ago
 
???

bonzo71

Pinside member

US Boothwyn, PA

11y 57,300 1,248 32

OP
Quoted from paddlepaw:

Ahhh, i didn't have anything that would fit those because the small metal disks are really in the way. I'll find the right tools and try that. Thanks!

You can remove the bolt and and pull off the metal disks and the wiper which is sandwiched between the disks.

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