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Solution to CGEM DEC Clutch Under Tightening

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#1 eacmen

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Posted 23 September 2019 - 10:54 PM

I have the ADM l knob upgrades for the CGEM including the RA/Dec levers. The Dec lever is longer than stock. I couldn't orient the lever so that it would tighten as much as I would like. The lever would end up hitting the saddle.

Today on a whim I simply inserted a small washer maybe 1/16 thick behind the clutch bolt. This was just enough to get the Dec lever to tighten down real well without hitting saddle.

If others are using the ADM levers and having same issue should be a cheap fix.




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#2 TikiTom

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Posted 23 September 2019 - 11:16 PM

I have the ADM l knob upgrades for the CGEM including the RA/Dec levers. The Dec lever is longer than stock. I couldn't orient the lever so that it would tighten as much as I would like. The lever would end up hitting the saddle.

Today on a whim I simply inserted a small washer maybe 1/16 thick behind the clutch bolt. This was just enough to get the Dec lever to tighten down real well without hitting saddle.

If others are using the ADM levers and having same issue should be a cheap fix.
 

 

 

 Thanks for a good idea! I have the same issue. 

Could you attach a photo so we can see how it goes together?


Edited by TikiTom, 23 September 2019 - 11:16 PM.


#3 eacmen

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Posted 24 September 2019 - 09:50 AM

 Thanks for a good idea! I have the same issue. 

Could you attach a photo so we can see how it goes together?

Next time I take it apart I'll take a picture but its fairly straight forward.

 

1. Remove the ADM lever from the brass piston that pushes on the clutch.

2. Unthread piston from the Dec.

3. Search through jar of washers for one that will fit in the hole. I think I used an M3 washer but I can't be sure

4. Put it down the hole and make sure its flat.

5. Thread the piston back in and test the angle and test the lever rotation to make sure it will engage the clutch before the lever hits the saddle.

 

You might need to try different washer thicknesses to get the desired rotation. 


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#4 eacmen

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Posted 25 September 2019 - 05:01 PM

Measured another washer I had it the same size. It's an M4 washer 9mm x 4.5mm x 0.8mm.

Hope this helps.


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#5 TikiTom

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Posted 27 September 2019 - 03:22 PM

Next time I take it apart I'll take a picture but its fairly straight forward.

 

1. Remove the ADM lever from the brass piston that pushes on the clutch.

2. Unthread piston from the Dec.

3. Search through jar of washers for one that will fit in the hole. I think I used an M3 washer but I can't be sure

4. Put it down the hole and make sure its flat.

5. Thread the piston back in and test the angle and test the lever rotation to make sure it will engage the clutch before the lever hits the saddle.

 

You might need to try different washer thicknesses to get the desired rotation. 

still trying to picture how everything goes together.

I'm not too good at visualizing how things like this fit...



#6 TikiTom

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Posted 27 September 2019 - 03:32 PM

here's my old lever, lets just say this is the ADM lever - 

  

  

where does the washer go? 

  

  

Attached Thumbnails

  • cgem lever washer.jpg


#7 eacmen

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Posted 27 September 2019 - 03:41 PM

here's my old lever, lets just say this is the ADM lever -


where does the washer go?


The washer goes down the hole that the lever came out of. Back the lever bolt out all the way, drop the washer down the hole. Put the lever back on.

The hole in the middle of the washer isn't used. We're using it as a shim rather than a washer. But it's what I had on hand.

The bottom of that brass bolt in the picture is what pushes against the clutch that locks the Dec. We're simply shortening the length of travel required for the brass bolt to engage the Dec clutch.


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#8 TikiTom

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Posted 27 September 2019 - 05:24 PM

great, thank you for helping me get it visualized.

just need to dig thru my "bucket o' washers"....




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