Precor knocking noise...help!

I have a Precor 5.21i and the right arm knocks/clunks at the bottom of the stride. Sometimes the noise disappears after riding it for about 5-10 minutes, but it can be annoying when it doesn't stop. Does anyone know how to prevent/correct this problem?
 
Precor 5.17 clanks, too

I have a Precor 5.17 with a clank at the bottom of the left stride. I have struggled to find the source, but no luck. Mine is a different model than yours (epv02), but I will watch this post hoping for a solution in case it might apply to the 5.17, too. This clank is making me suicidal, but (so far) I still put in my 45 minutes 4-5 days each week.
 
broken weld

I had the same problem....the tech from precor and I discovered a broken weld at the foot end of the ramp. Precor is sending me a new ramp for the tech to install.....part is under 10-year warranty, but I'm paying the tech $150. Worth every penny. Hope this helps.
 
DIY solution for clanking noise

Hey, GSO. I'm glad that worked out for you. I also recently found a solution. I noticed that if I tightly grasped the ramp at the bottom I could move it side to side, hearing a soft clank (much louder while in actual use). I removed the pivot bolts, made a rubber washer/spacer from a sheet of heavy rubber bought in the plumbing department at Lowe's, and added that to the spacer and spring washer already there. I did this on each side of the ramp (both pivot bolts). There was then no longer any left to right movement whatsoever and my unit has not clanked since. I hope this helps you, epv02 - that clank was driving me insane!
 
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