17LA loader pin wear problem

[Slippy]

My TC40DAss 17LA loader has some kind of wear at the four pins that hold the QA braket on the loader. To explain, if the loader is in the full dump position you can take your hand and wiggle the bucket back and forth a few inches. This also makes it difficult to place the cutting edge of the bucket where need. If I put the bucket in the flat to ground position as indicated by the position bar and notch, when the bucket comes into contact with the ground it will move a couple of inches up and down.

I have the older style 17LA loader that does not have bushings. I did go to NH dealer and he sold me 16 bushings. Took it apart and no bushings. The pins do not seem to have noticable wear marks on them.

Any ideas on how to fix the problem short of replacing the whole front end of the loader?

 

[jinman]

The obvious question would be to ask if you lubricate your loader on a regular basis. I lube mine daily under heavy use and sometimes twice a day. I carry a grease gun in my toolbox. With almost 1300 hours my 16LA pins are still very tight. It seems unlikely that you could have 2" of slop, but I think this is very unusual and may indicate the wrong size of pins were installed on the loader. I don't believe it is standard to have bushings.

 

[Soundguy]

If it did have slop and eggged the bores out.. it will sure need to be milled for bushings now.. or have new parrent bores welded on after yuo cut the old ones out.

Post a pic close up if you can showing the pin/bore, and the slop.

soundguy

 

[Slippy]

Grease all points on a regular basis, and as I said, the pins really don't show wear. It actually has been like this since I bought it. Will take some pics.
Thanks.

 

[Soundguy]

If the pins are hardened ( should be).. then they probably won't have worn much vs the mild steel bores they are probably running in..


soundguy

 

[farmacist]

It sounds like you might have slop in your dump hydrolic cylinders (like air in the cylinder) instead of your pins. Have you checked for that?? Frank

 

[Soundguy]

Cyl's would self bleed.

soundguy

 

[Slippy]

As near as I can tell, it is not the clys.

Here are some pictures. Sorry for the dirt, but it has been wet around here lately.

It is hard to show what I am talking about in the photos. If you can imagine taking the QA plate in your hand at the bottom of the plate and pulling up on it when the loader is off the ground, there is movement at all four pins. I pulled the side off on one side to try to show the pin itself. Also, there are a couple of pictures of the end of the pins. Don't know if this helps explain it or not.

Did return the bushings to the NH dealer today and they could not offer any other help except to suggest buying a new tractor. Guess I can't fault them for trying.

 

[smitty9266]

check for bad cylinders had the same problem and it was the cause of the problem.

Lift up bucket off ground and with bucket parallel to ground shut off tractor and and disconnect the quick connects for the dump cyl's see if the bucket drops. If it does cyl's are bypassing and need to be rebuilt.

Jeff

 

[RickB]

Grease all points on a regular basis, and as I said, the pins really don't show wear. It actually has been like this since I bought it. Will take some pics.
Thanks.

If you were my customer, I'd tell you that the photo evidence indicates the greasing interval is too long. The pivot at the lower end of the loader boom looks especially dry. Also, this loader has a 4-link design. More pivots=more clearance. If these pins and bores were close tolerance, some would gall and sieze.