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I broke it!!!

Posted: Sat Mar 05, 2011 10:14 pm
by bluecraig0776
I noticed oil leaking from rocker cover on my '57 major diesel, went to tighten the bolts a bit and the front one broke!! Wasn't the bolt that broke, oh no, it was the threaded part on the rocker shaft that broke!! Only a tiny little bit of it left. Any ideas on how to sort it or will I have to replace the whole shaft?

I will post a pic tomorrow.

Regards

Re: I broke it!!!

Posted: Sat Mar 05, 2011 10:29 pm
by bluecraig0776
Its ok I've just thought about welding a couple of nuts onto the rocker shaft. :roll:

Re: I broke it!!!

Posted: Sun Mar 06, 2011 1:18 pm
by henk
Bleucraig,

Glad you have a solution for the problem. Never the less, could you make some pictures from the broken part and how you have done the repair.

Re: I broke it!!!

Posted: Sun Mar 06, 2011 8:31 pm
by bluecraig0776
Of course I will Henk. I have lot of help from people on here, it is only right that I do my best to help others.

Here's a couple photos of offending part, Sorry for poor quality, photos taken on phone.
Image
Image

Re: I broke it!!!

Posted: Sun Mar 06, 2011 10:00 pm
by JC
Do you still have the piece that broke off? If so, I would clean it up, braze it back on, and then run a tap through it.

Re: I broke it!!!

Posted: Mon Mar 07, 2011 9:01 am
by henk
I think welding will give to much heat and wil disvorm the bearing. Better brase it as JC says and use silverbrase.

Re: I broke it!!!

Posted: Mon Mar 07, 2011 8:04 pm
by Supermanuel
Take out the rocker shaft and replace the it with a used part. Even a complete rocker shaft is not not expensive from wrecker. Important that it is from correct engine. Various rocker arm lengths exist.

Re: I broke it!!!

Posted: Mon Mar 07, 2011 11:55 pm
by bluecraig0776
I thought quite carefully about this then decided to try welding it, if it went wrong I would source another part.

I welded in place a section of threaded rod (M8x1.25) by welding just a little section at a time trying not to generate too much heat. It seemed ok so I did the same with the other bit. Now I have two pieces of threaded rod sticking up which I can slide the rocker cover over then tighten down with two nuts.

I will post pics soon.

Regards

Craig

Re: I broke it!!!

Posted: Wed Mar 09, 2011 12:44 am
by Kim
Congratulations on your repair job; it is what I would have tried first. Replacements from a wrecker are fairly easy to come by but being a cheap old yankee, I like saving money! :lol:

Re: I broke it!!!

Posted: Wed Mar 09, 2011 7:31 pm
by bluecraig0776
Kim wrote:Congratulations on your repair job; it is what I would have tried first. Replacements from a wrecker are fairly easy to come by but being a cheap old yankee, I like saving money! :lol:
Me too! Working in a garage helps. My boss is quite nice about letting me use bits and pieces.