Linkage repair inserts

[clbarclay]

I have several implements that have have worn holes for 3 point linkage mounting pins.

If I bore the holes out with a mag drill, does anyone make insets or bushes that can get them back to the right size?

I did think of reducer bushes, but the holes I want to repair are cat 3.

 

[mushnt grummmble]

I have several implements that have have worn holes for 3 point linkage mounting pins.

If I bore the holes out with a mag drill, does anyone make insets or bushes that can get them back to the right size?

I did think of reducer bushes, but the holes I want to repair are cat 3.

get a guy with a lathe to turn some for you

 

[TheTallGuy]

Local engineering firm would be your best bet - it's the sort of thing the trainees/junior gets to do, or the pros do between real jobs. When I've made them in the past, I've done them as a top hat shape and then tack welded them in place - that way you can keep some spares on the shelf and replace if they wear again.

 

[KennyO]

Our local bearing supplier got us some for repairing our track digger.

 

[clbarclay]

Its a custome job then, thanks. I just need to upgrade my status from a guy with a lathe to a guy with a working lathe.

 

[Pan mixer]

Its a custome job then, thanks. I just need to upgrade my status from a guy with a lathe to a guy with a working lathe.

I think it might be quite tricky to bore out an oval hole with a broach.

 

[nick...]

I think it would be impossible.
Nick...

 

[mushnt grummmble]

Gas axe

 

[mikep]

If its mild steel dont bother pratting about with that. Get the gas cut them out and weld in new, much quicker and simpler.

 

[devonshire farmer]

Just have some 10mm plate and drill the holes in it same size as pin and weld them on top the originals, you may need a slightly longer pin but on most machines you have a bit spare or can weld on insides if there is enough room!
Something like a 3-4 inch square should be fine, if you drill your holes first its much easier obviously because you have something to magnet too!

 

[mikep]

Just have some 10mm plate and drill the holes in it same size as pin and weld them on top the originals, you may need a slightly longer pin but on most machines you have a bit spare or can weld on insides if there is enough room!
Something like a 3-4 inch square should be fine, if you drill your holes first its much easier obviously because you have something to magnet too!

On a cat 3 10 mm may be a bit optimistic.

 

[Andrew]

I think it might be quite tricky to bore out an oval hole with a broach.

When we did it we cut some plate the same shape as the hole with the plasma, welded them in the hole and ground flat. You've then got a flat plate for the pilot pin to fit to.

 

[TheTallGuy]

I think it might be quite tricky to bore out an oval hole with a broach.

It's tricky, but can be done with the right broach and a bit of experience - never done it that way myself but have seen it done; I have done it a couple of times with drill bits with Ok results.

 

[Alf]

I think it might be quite tricky to bore out an oval hole with a broach.

So do I . gas the hole out and weld a boss /collar in .

 

[clbarclay]

I was thinking of using a large enough broach so the existong oval hole doesn't effect it, rather tha reaming.

Chopping off and remaking the brackets may be the easier fix on some of them though.

 

[Will 1594]

shall go and take a pic of subsoiler pin holes that have been repaired with a rebush , just carefully gas hole out tidy up with a file and weld in new bush ,made out of thick walled tubing ,

 

[mushnt grummmble]

shall go and take a pic of subsoiler pin holes that have been repaired with a rebush , just carefully gas hole out tidy up with a file and weld in new bush ,made out of thick walled tubing ,

if you make a top hat style bush then just gas the hole and weld both sides

 

[Will 1594]

aye mg but need to be a tidy hole , difference between scratching your arse ,and scratching the skin off

 

[Alf]

you can get these all sizes , gas the hole out weld one in , job done . just do them in pairs with pin through to make sure they are both in line

 

[Alf]

When we did it we cut some plate the same shape as the hole with the plasma, welded them in the hole and ground flat. You've then got a flat plate for the pilot pin to fit to.

I can see what you did , but it was the long way round .