Low temperature grouphead idle on E61 HX Rocket - Page 4

Need help with equipment usage or want to share your latest discovery?
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erics
Posts: 5990
Joined: Aug 09, 2005, 2:32 am

Postby erics » Mar 03, 2012, 11:13 pm

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 erols dot com

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spiffdude
Posts: 325
Joined: Sep 26, 2010, 9:24 pm

Postby spiffdude » Mar 04, 2012, 12:51 pm

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!

User avatar
spiffdude
Posts: 325
Joined: Sep 26, 2010, 9:24 pm

Postby spiffdude » Mar 04, 2012, 12:58 pm

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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