Patsdeere

Well-known Member
Working on a D and need to pull the pistons. Sadly there is a huge ridge. Is there any chance of pulling them out the back? The thought of grinding that ridge down and trying to get them out the front isn't really appealing.
 
The ridge needs to go. Even if you can get them out the back, new when put back together, will hit the ridge with unwanted results!
 
A huge ridge sounds pretty serious as in it likely needs bored out and or resleeved ? A dremal tool or die grinder with a sanding drum or grinding stone will knock that ridge down or at least smooth it up some so the pistons can pop out.
 
That is the way I would do it, but it isn't mine. Sometimes you can lead a horse to water but you can't make them drink.

The wear stops about 2-3 inches from the head, so ridge cutting it (if I even had one) would take ions.

I guess I will just get in there and grind away.

Thanks.
 
I could see if I change pistons, but if the pistons stay the same, the ring grooves would stay the same and thus it shouldn't hit the ridge. Or am I missing something?
 
I don't think there is such a ridge reamer made that works on a 2 cyl. because of that reason of them being so low in the block and also so large around.
 
Rogeriniowa is correct . Most likely the rings have wore out the ring groves . We had a ridge reamer that would take them out . They need to be cut to the top of the piston as it will hit the ridge . You need a bore job.
 
If I can't convince him to bore it, then would a 220 hone be enough to break the glaze in the cylinder if I just put new rings in, or are rings not even with dealing with?
 
well if the cyl's are that worn then you need a rebore. just honing and reringing is basically a patch job and not long term.it is possible that the new rings will hit the ridge and break the top ring, if its left in. but if the piston grooves are worn which is also very possible pistons are needed too. tractor buyers and sellers never fix the problem correctly anyhow.
 
ooh yuck ! hate too see any free hand grinder work on a cyl. at least use a flapper wheel to smooth it down some. free hand grinding is not the answer. you will get low spots for carbon to build up on and do as much damage or more. i would just leave the ridge alone and take a chance if i did such a thing. just use a flapper if i had to . measure the old ring thickness and the new ring thickness and you will get your answer.
 

Tell him that it Must be Bored and if not, put it back together and send it Home...

Do it right or it will eventually make YOU look bad..
 

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