PT-425 dented lifting arm

   / PT-425 dented lifting arm #21  
Ernie, maybe thats how PT. adjusted the rod to get clearance ?? jim
 
   / PT-425 dented lifting arm #22  
Ernie, maybe thats how PT. adjusted the rod to get clearance ?? jim
Thanks for the laugh!

That's solid steel. There's no adjusting it.

All the best, Peter
 
   / PT-425 dented lifting arm #24  
Thanks for the laugh!

That's solid steel. There's no adjusting it.

All the best, Peter

Really, It doesn't take much to bend mild steel. I could put it in a vice and bend it cold to get clearance. A torch would make even easier. They may have jig that moved and it hit after they made it and they fixed the clearance the easy way.... look how easy the cross tube dented.... jim
 
   / PT-425 dented lifting arm
  • Thread Starter
#25  
Well, I'm not a welder but managed to fill the dent. No idea if this really returns the tube to it's original full strength integrity or not but Terry said that's what they'd do at the factory.

dent prep.jpgFilled dent.jpg

The cause still isn't addressed. There will definitely still be contact when the QA plate is in full down and retracted (top of QA plate toward the driver) position. Actually in that position it's fine, it's the 1/2" of free-play in the linkage that does the damage.

I'd rather not restrict the cylinder and reduce range of motion....even if I knew what, exactly, a "restrictor" is :).

I could weld stops to the tube as suggested but then I'd just have the collar on either side of the rod knuckle banging into the stops on the tube and perhaps causing two new issues? Plus, is it ok to weld flat stock to a cylinder for this type of repair?

I could grind down the knuckle a bit where it makes contact - it seems to be pretty thick and maybe could get away with taking 1/4" off? I don't want to weaken the joint since I presume there's a bit of pressure between the ball and the knuckle that surrounds it.

Lastly, I suppose I could just never put the QA plate in that position but highly doubt I'll remember that on every single combination of implements/positions
 
   / PT-425 dented lifting arm #26  
I looked at my roll-over tube today. That's the cross-tube across the middle of the FEL arms with the grease zerks on each end, and has the two fingers sticking down that the dump/curl cylinder attaches to and the two fingers sticking up that the top link attaches to.

The top fingers that connect to the top link are much longer than the bottom fingers that attach to the dump/curl cylinder.

Have you looked at those fingers and seen if the long fingers are on top? to see if your roll-over tube may be installed upside down? That may account for the weird geometry.
 

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   / PT-425 dented lifting arm
  • Thread Starter
#27  
I printed your question then went and looked......crazy how verbal descriptions can get misunderstood. Yes, the top fingers are indeed longer (9") than the bottom fingers (8 1/2"). Good suggestion though as I could see where that could cause a problem.
 
   / PT-425 dented lifting arm #28  
I printed your question then went and looked......crazy how verbal descriptions can get misunderstood. Yes, the top fingers are indeed longer (9") than the bottom fingers (8 1/2"). Good suggestion though as I could see where that could cause a problem.

Mine have much longer on top and shorter on bottom than 1/2", but mine is a 2001 model year. Maybe question someone with the same model year as yours.
 
   / PT-425 dented lifting arm #29  
Well, I'm not a welder but managed to fill the dent. No idea if this really returns the tube to it's original full strength integrity or not but Terry said that's what they'd do at the factory.

View attachment 587994View attachment 587995

The cause still isn't addressed. There will definitely still be contact when the QA plate is in full down and retracted (top of QA plate toward the driver) position. Actually in that position it's fine, it's the 1/2" of free-play in the linkage that does the damage.

I'd rather not restrict the cylinder and reduce range of motion....even if I knew what, exactly, a "restrictor" is :).

I could weld stops to the tube as suggested but then I'd just have the collar on either side of the rod knuckle banging into the stops on the tube and perhaps causing two new issues? Plus, is it ok to weld flat stock to a cylinder for this type of repair?

I could grind down the knuckle a bit where it makes contact - it seems to be pretty thick and maybe could get away with taking 1/4" off? I don't want to weaken the joint since I presume there's a bit of pressure between the ball and the knuckle that surrounds it.

Lastly, I suppose I could just never put the QA plate in that position but highly doubt I'll remember that on every single combination of implements/positions

I think that stops are the best idea, you don't want the cylinder to be banging around at the end of it stroke. I would weld a piece on either side of where the rod was hitting on the tube . Then cut out and drill two pieces of 3/8 material the same width as the ears but extend them past. to contact the metal you added to the tube and use a longer bolt and make sure you hav clearance for the rod end then tack them in place. remove bolt and retract the cylinder. and put he bolt back in and cover everything from welding splatter and then weld it up and you are good to go. Now it will have something solid to bump on spread over a large area and not damage your cyl. at the end of the stroke. jim
 
   / PT-425 dented lifting arm
  • Thread Starter
#30  
I just wanted to circle back to this in case anyone else develops a similar problem. No sense whining about a problem if I can't offer at least some kind of constructive outcome.

I chose to weld stops on the tube and it seems to be preventing the knuckle from making contact and doing further damage to the tube. The ears on the QA plate do make contact with the added stops but at least it doesn't appear to be doing any damage - just some paint chipping as you can see in the photo.

stops.jpg
 

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