Bushing extraction

[Anonymous Poster]

I've got to remove some bushings from the end of the dipper on my backhoe. It appears that either the wrong 'length' bushings where used, or they somehow moved. The upshot is that I cannot get the bucket off.

What are ways to do this? Are their simple (cheap?) tools like a gear puller type of thing?

What can I expect?

Thanks.
GregM

 

[Anonymous Poster]

I have always just driven them out using a good sized hammer and punch that is slightly smaller than the pin to be driven. The main thing is to be sure everything is supported properly so that it does not fall down on you !

 

[CTyler]

Yep, drive them out. Mine was very tight the first couple times. Partly due to paint on the inside of the holes. You could use some 3/4 or 1" rod, etc.. thats what I used on the first pin. Then I took a punch and marked a point in the center and used the air hammer to gently drive them out. When putting them back in again I cleaned up the paint and greased the pin. Still had to tap on it firmly with the 5lb hammer.

 

[Chief]

The old BFH and long driver punch to drive them out is usually the way. But I also used an air chisel with a bushing driver bit if you have or can get one. Has the bushing spun or elongated the hole in the dipperstick? Some bushings I had to use a BIG slide hammer with a pulling paw to get them out. It is a PITA job when they are all pooched up. /forums/images/graemlins/frown.gif Good luck on the task.

 

[Anonymous Poster]

The previous two responses seem to be about the pin, and not the bushings.

If I understand your answer, there are two things required:
1) A slide hammer (BIG)
2) A pulling paw.

or

1) An air chisel
2) a bushing Driver bit

I'll look around for these.

GregM

 

[CTyler]

They way I read it was you needed to get the bucket off first(I.E. remove the pins) before you could get to the bushings.

An air hammer and bushing driver would make short work out of removing the bushing.

 

[Anonymous Poster]

Help me out with the bushing driver. Where would I find such a beast.

GregM

 

[Anonymous Poster]

To restate, I can't get the bucket off the backhoe, because the bushings hold it on even after the pin's are removed. The bushings seem to be too long. It's a little hard to explain.

GregM

 

[CTyler]

</font><font color="blue" class="small">( Help me out with the bushing driver. Where would I find such a beast. )</font>

I'd try Harbor freight, NorthernTool, Sears, Napa, etc...

 

[Chief]

Sounds to me like the bushings may have worked their way out of the diperstick mount hole and holding the bucket in place. You may have to drive them back in enough to allow the bucket to drop off. BE VERY CAREFUL doing this as any fingers and hands in proximity of the bucket and links could be injured, not to mention feet and toes when the bucket drops. I would lower the bucket to the ground or as close as possible to minimize the risk.

 

[bgott]

Support your bucket so it doesn't drop and hurt you when it comes loose and then use a Sawsall to reach between the dipper stick and bucket ears to cut the bucket loose. Once the bucket is out of the way use the Sawsall to split the bushings in a couple of places and then collapse them and knock them out with a chisel.

 

[mrcaptainbob]

Is there bushing material on both sides? I've run across situations where there were two bushings on one pin. I wonder if that may be the case...where both bushing 'halves' managed to work their way out. Or...just another thought here, could the whole bushing stack have worked through enough? That is, the outer bushing may have slid to the bucket as the bucket bushing slid to the other side?

 

[gmccarty]

I believe that the wrong size bushings were used (i.e. too 'long'). I've taken it to my 'dealer' (a local guy who sold me the tractor), and he's going to remove them.

By the way, my account has disappeared twice, so I'm the 'Poster' in this thread.