Can this cylinder rod be welded ?

[Industrial Toys]

How much money do you want to spend? How much do you care if it's done right? Sometimes I find that crude repairs last forever and spending a lot of time and money on a repair wasn't money well spent. In fact, the more money I spent at "EXPERT" shops, the worse I simply got ripped off.

 

[Kyle87]

Good questions! While I do really like to do or get things done right, a repair here is an effort to get the tractor working and not spend 400+ on a cylinder ..

 

[TractorGuy]

What do the back end of the cylinders look like?

 

[TractorGuy]

You might could call someplace like this and have rods made?
Custom Machining & Hydraulic System Maintenance Services | CRC Distribution Inc.

Agri Supply shows some rods to fit Grizzly cylinders. Might get lucky and match something up there.

Search Results | Agri Supply(R)

 

[mikester]

Yes you can repair, but seeing it's a small cylinder buying a new one probably won't break the bank. Swing cylinders see a lot of load and tend to get abused. You will want the geometry correct, you might want to take off the other cylinder for the repair shop to reference and get the dimensions right.

 

[Tinhack]

... Swing cylinders see a lot of load and tend to get abused.

That's a good point. It appears BOTH cylinder ends are damaged now. One broken off; One cracked. I wonder if there's wear in the tower pin or shims? There's a reason why those ends are breaking.

This YT video explains the fix: John Deere 31D Backhoe Swing Tower Repair - YouTube

 

[Kyle87]

Again thanks all for the replies and suggestion very helpful! I will take a look at that video as well. This appears to be a fully welded cylinder correct ?

 

[Kyle87]

Again thanks all for the replies and suggestion very helpful! I will take a look at that video as well. This appears to be a fully welded cylinder correct ?

View attachment 678367

 

[Tinhack]

The cylinders have a gland nut at the rod end. You need a pin wrench to unscrew the nut then the whole rod and piston comes out that end.

 

[ruffdog]

My take on this, would be to take the broke threaded piece inside the rod ball end.

Then chuck the cylinder rod on the lathe, face off to clean the broken remaining. Then drill and tap for the same size thread it had and use a piece of all thread, or cut the head of a bolt off or machine a short threaded stub. Finally, would simply thread the ball end to the rod, probably with some sort of thread locker. Hopefully I explained this clearly.

But I do have a lathe though. It's not technically necessary for this repair but does make things easier.

I have done this....drill/tap end of rod for a separate threaded stud (grade 8) for the yoke to screw onto. The big question is the hardness of the rod and if it can be threaded. A tap (HSS) may not be hard enough but single point CNC threading with a carbide tool may cut it.