Help me with what tool I need to pull this....

[Fyrme]

I've got a heavy duty job site compressor that was given to me with a rod Knock. It runs and builds pressure great, but knocks like a mother. I've got the case and head off of it, exposing the piston rod and balance shaft. The rod bearing has tons of slop in it, and I imagine that's the problem. However, I can't figure out how to get the pressed on bearing off the shaft. The is only about .020-.030 room between the rod and balancer, so a conventional puller is not gonna work.

My question is, what would the factory use to separate the rod from the shaft ch:

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[Fyrme]

I've got a heavy duty job site compressor that was given to me with a rod Knock. It runs and builds pressure great, but knocks like a mother. I've got the case and head off of it, exposing the piston rod and balance shaft. The rod bearing has tons of slop in it, and I imagine that's the problem. However, I can't figure out how to get the pressed on bearing off the shaft. The is only about .020-.030 room between the rod and balancer, so a conventional puller is not gonna work.

My question is, what would the factory use to separate the rod from the shaft ch:

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Oh, and the shaft is fairly soft. I already tried a wedge behind it and a brass hammer on the shaft, and you can see it smashed the alignment tab a bit. I then changed to a plastic dead blow hammer with no luck.

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[619DioFan]

bearing sepearator with a pulling bar ( drive screw pushing on the center shaft ) should get it.

 

[Wamsutta]

You need a bearing splitter to start with to get the bearing up off the surface and then use a pulling bar attachment to pull on the bearing splitter. You see those threaded holes in the bearing splitter? The pulling bar adapter threads into those holes.

 

[jeffer949]

^^^^wont work. The connecting rod would get in the way. The bearing is probably locked in place with a locking compound. Best way to get it off is to heat it up. Heat up the bearing with a propane torch and I bet it would let go. Yes you will ruin the bearing but you will replace it anyway.

 

[Wamsutta]

^ Alright, how about a pry bar with a striking cap? It'd be a heck of a lot cheaper than a bearing splitter set anyway.

 

[pi_guy]

Two rolling head pry bars

 

[Wamsutta]

^ Like these?

 

[The Cobbler]

heat the connecting rod with a little pry behind it & it should pop off. then you can probably deal with the bearing by using a splitter as pictured above

 

[jeffer949]

heat the connecting rod with a little pry behind it & it should pop off. then you can probably deal with the bearing by using a splitter as pictured above

Good Idea

 

[Dingleburry]

Torch

 

[LXCam]

heat the connecting rod with a little pry behind it & it should pop off. then you can probably deal with the bearing by using a splitter as pictured above

Count me in with that.

 

[larry_g]

Me, I'd drill and tap those three dimples and use some screws to jack it off the shaft. The last compressor I was in like that, Dewalt, I was able to buy the cylinder and rod/piston/bearing assy as a rebuild kit so destroying the rod would be of no consequence. Even drill and tapping the 3 dimples would have little consequence if reusing the rod. At worst you might have to remove a bit of metal from the counterweight of the crank.

lg
no neat sig line

 

[Fyrme]

Thanks guys. I used heat to get the rod off the bearing, then a puller and some heat to get the bearing off. I don't know why I almost always forget that option. I've used heat for tons of things, but anytime I have something new, i never think about using it.


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[The Cobbler]

Cool!

 

[pi_guy]

^ Like these?

yes
I have two sets it works better balanced.