help me please (broken valve guides!!!)

tubatom91 · Post by **tubatom91** » Wed Oct 18, 2006 4:37 pm

ok I have a Mirafone 1270 (I think) I ordered a new valve guide for it when I got it it was a small plastice piece that is square on my valves the guide is in a drilled hole in the side of the valve itself no plastic guides on top like yamaha's any body I need this part so maybe I can practice I have been all over the net but no luck pictures will be up soon

Dean E · Post by **Dean E** » Wed Oct 18, 2006 9:33 pm

tubatom91 wrote:ok I have a Mirafone 1270 (I think) I ordered a new valve guide for it when I got it it was a small plastice piece that is square on my valves the guide is in a drilled hole in the side of the valve itself no plastic guides on top like yamaha's any body I need this part so maybe I can practice I have been all over the net but no luck pictures will be up soon

Get out Mr. Drill and Mr. File. Hope you can remove the old guide and screw. Is the original brass or nylon?

tubatom91 · Post by **tubatom91** » Wed Oct 18, 2006 10:11 pm

its nylon or plastic or somthing

tubatom91 · Post by **tubatom91** » Thu Oct 19, 2006 4:17 pm

well I am saying I got he wrong part and I dont know what I need or how to get them out or put them in the broken one is snapped off so I cant exactly "unscrew it"

Chuck(G) · Post by **Chuck(G)** » Thu Oct 19, 2006 4:35 pm

I think your best and safest option (you're not gonna like this) is to take it to a repair tech and have him carefully drill the old stub out. I don't think easy-outs work very well with nylon.

Brassdad · Post by **Brassdad** » Thu Oct 19, 2006 5:43 pm

My recent post on nylon valve guides and my son's FSchmidt sounds just like what you have going on.

The second valve guide broke off leaving the threadded studd portion in the valve with the exposed surface even with the valve surface.

What I did was used my wife's seam ripper (an awl or similar pointed device should work as well, you just need a pointed instrument that can "dig" into the nylon but not bend).
I stuck the point into the nylon - off center - and close to the side. I then applied steady pressure in a counter-clockwize direction. It didn't take much to get the action started but I could only get a 1/4 turn or less (usually less) for the first 8 or so tries.
Once that occured, I was able to start twisting with my finger tips (needle nose pliers should also work at this point).

Once out refer to Besson983's instruction.

I did give the thought to drilling out the nylon - FOR LESS THAN A SECOND - and gave it up for fear of hitting the threads of the valve.

If I can do it, you should be able to as well - good luck.
Oh, there is no shame in going to a pro.

TubeNet

help me please (broken valve guides!!!)

help me please (broken valve guides!!!)

Re: help me please (broken valve guides!!!)