terex herder
Senior Member
Where is the damaged surface causing trouble?
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Looking for the right mill bit
- Thread starter Mobilewrench
- Start date
Mobilewrench
Senior Member
Mobilewrench
Senior Member
The smaller port on the right seems to be okay. It was "repaired" three or four years ago. You can see the difference in the color of the metal where it was filled in and brought back flat.
That wasn't the original plan. But the machinist I took it too wasn't able to get it on his mill.
The larger port on the left is the problem child. It was also repaired 3 or four years ago. This time last year I had to tear it apart because of the leak. That's when I started this thread.
I know it isn't a great picture but if you zoom in you can see how material has chipped out where the back up ring in the valve body (I didn't take any intentional shots of it, but I am pretty sure that it is visible in one of the earlier pictures) makes contact with the main body of the hammer.
That wasn't the original plan. But the machinist I took it too wasn't able to get it on his mill.
The larger port on the left is the problem child. It was also repaired 3 or four years ago. This time last year I had to tear it apart because of the leak. That's when I started this thread.
I know it isn't a great picture but if you zoom in you can see how material has chipped out where the back up ring in the valve body (I didn't take any intentional shots of it, but I am pretty sure that it is visible in one of the earlier pictures) makes contact with the main body of the hammer.
Mobilewrench
Senior Member
I can get better pictures if you think it would help.
Legdoc
Senior Member
I have several questions.
1. What is the physical size of the hammer?
2. How much does it weigh?
3. Is there a facility there that does job shop work for the Navy?
I would think tig welding the depressions followed by a carbide or ceramic insert shell mill would do a dandy job.
I have seen a finish on steel by a shell mill look like the data side of a CD. Rainbow and all.
1. What is the physical size of the hammer?
2. How much does it weigh?
3. Is there a facility there that does job shop work for the Navy?
I would think tig welding the depressions followed by a carbide or ceramic insert shell mill would do a dandy job.
I have seen a finish on steel by a shell mill look like the data side of a CD. Rainbow and all.
DMiller
Senior Member
I take it you have also
Checked the mated surface component for Flat and true? Need to find a mill that can handle that and face it or replace it.
Checked the mated surface component for Flat and true? Need to find a mill that can handle that and face it or replace it.
terex herder
Senior Member
I would be tempted to see if a shop could mill or grind .002/.004 from the mating part with the o-rings to give the o-rings a bit more compression. Don't go overboard, if the o rings are over compressed they will fail quickly. A picture of the complete hammer would give some indication of size. Looks like an easy fix in my shop, but don't know what is available for equipment on your islands.