Quick Hitches Skid steer attachments disconnecting

[6sunset6]

I have been using the skid steer quick attach on my New Holland TC34DA for 10 years . Last year both the bucket and the forks started detaching when pulling backwards.
It appears the locking pins were hanging up ,not completely extending. Something must be slightly bent but I cannot see it.
I opened up the holes in both the bucket and the forks and the pins come out a little further but the bucket still came off. I am going to see if I can add some weld material to the ends to make them a little longer if I have room to retract.
Anybody else have this problem?

 

[atsah]

Are your locking handles staying put. I had to put thread locker on mine when it was new, they kept moving up, now never a problem since.

 

[6sunset6]

The handles are still in the lock position when the bucket comes off.

 

[Rustyiron]

Welding a 1/8"* pc. "shim" around your lower pin surface on the attachment should tighten this up. I have seen the wedge pins in the tractors ssqa worn also. Are your springs that hold down the pins broken or worn/weak?

* or more if needed

 

[SPYDERLK]

Welding a 1/8"* pc. "shim" around your lower pin surface on the attachment should tighten this up. I have seen the wedge pins in the tractors ssqa worn also. Are your springs that hold down the pins broken or worn/weak?

* or more if needed

The thing is, altho springs load the pins downward, the lock arm mechanism should present a hard stop before the pins can come up far enough to disengage. The shim idea could fix this. There is probably some wear in the lock arms that compounds the issue as well

 

[6sunset6]

The pins seem to be short. I am making them longer by welding material on. They seem to stick out further and retract plenty . But its too hot now 92d F to continue. This seems to be the fix.

 

[SPYDERLK]

The pins seem to be short. I am making them longer by welding material on. They seem to stick out further and retract plenty . But its too hot now 92d F to continue. This seems to be the fix.

The pins ar very hard to resist wear and give more strength. It may be difficult to duplicate the property in your extension.

 

[bdog]

Welding on the pins doesn’t seem like a good idea. I have had attachments that wouldn’t stay put and the solution was adding shims at the top.

You might look here and see if it gives you some ideas on things to check.
Wheel Loader Attach

 

[tkevan]

It's likely the pins are jumping up, vs being too short. Mine did the same until I saw a stop block welded above the pins on another FEL. I welded a set on mine, problem solved.

 

[ovrszd]

I agree with Rustyiron. Shim time.

Lift the attachment off the ground. Then see how much gap you have between the attachment plate where the pin holes are and the bottom of your SSQA. Use this as a guide to add a plate shim.

The shim can be added to the top as suggested by bdog. Or can be added to the bottom which requires precise dimensions so the locking pins utilize the shim