Low temperature grouphead idle on E61 HX Rocket - Page 4

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erics
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#31: Post by erics »

BTW, i was able to change out the seal in the original valve so i now have a backup. I used a vice with rubber jaws and a heat gun to get the cam follower to unscrew. Yay!
"Yay!" is most correct. You followed the right procedure by replacing the part with new and successfully rebuilding the old. Hopefully, others will follow this same path.
Skål,

Eric S.
http://users.rcn.com/erics/
E-mail: erics at rcn dot com

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spiffdude (original poster)
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Joined: 14 years ago

#32: Post by spiffdude (original poster) »

When i opened up the group to get at the brew valve i did have a look at the seat. It looked ok to me, i also cleaned out the area with a toothbrush and some vinegar.

I can't say i took a good long look at it though, it's not impossible that there is a slight dimple or other surface anomaly that is responsible for the valve having a hard time to seat, if that really is/was the cause for my low idles.

I had a similar issue once with a faucet, had to change out the seat and seals, but that was a relatively easy fix because of its cartrige design. Can't image what it entails with the e61 group, looks like you'd have to replace the whole body :shock:

209 idle still holding as of this morning. I'm also back to my usual flush and go routine. Flush the group, goes up to 214-215, stop at 210 lock-in and go, shot ends at 199-200. Keeping my fingers crossed!

On the bright side, i finally got a chance to get to know the internals of my machine i bit more. I'm sure this will be useful sometime down the road since i intend to keep this machine for a while.
Damn this forum, I've had too m..muh...mah..mmmm..much caffeine!

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spiffdude (original poster)
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Joined: 14 years ago

#33: Post by spiffdude (original poster) »

erics wrote:"Yay!" is most correct. You followed the right procedure ...
Thanks to your instructions from another post Eric.

Working on a relatively new machine makes things easier i think. So far, everything i had to disassemble seemed torqued to proper values and gave in easily. Sometimes, older machinery have parts that are seized, bonded or almost fused together. That takes a whole other skill set and experience that i do not possess!

I remember taking a blow torch to one of my older mountain bike's seat post. Yikes!
Damn this forum, I've had too m..muh...mah..mmmm..much caffeine!

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