[Old DevilBiss Air Compressor] How do I remove the shaft here?

[LightningEngineer]

http://imgur.com/a/IzdYv

So I'm trying to remove the shaft, and the piston so I can paint the casing, and clean it out as it has stopped working reliably but I am at a complete loss as to how to do it. The slightly newer models have removable rod caps, but this unit is solidly connected here.

I see that there is a bolt that I cannot get to that is located in the casing behind the fan that is holding something together, and I do not see any snap rings anywhere on the outside of the unit.

If anyone has any ideas I'm open to hearing them.

Thanks for your time!

 

[Doug Arthurs]

Looks like the connecting rod rod has a split. Is there a bolt through the connecting rod that causes this split to close up a bit so it is tight on bearing.

 

[LightningEngineer]

Looks like the connecting rod rod has a split. Is there a bolt through the connecting rod that causes this split to close up a bit so it is tight on bearing.

Yes, that is correct. I have removed that and tried to push the rod out, but it doesn't budge one bit. I don't have a press though, so I was only using a covered hammer, and I don't want to break anything.

 

[Jtcrep]

Gonna need a press or atleast a really good gear puller.

 

[Kevin54]

It looks like there may be a set screw where your counterbalance is. If there is a setscrew, loosen it. Now you have two threaded hole on the ears. Those threaded holes are probably for jack screws. Find two bolts that fit the threaded holes an turn them a little bit at a time going back and forth between each one. This should push the counterbalance off of the crank and rod. After that is off, you probably have room to remove the piston. Once the piston is out, then you will have to press the bearing out of the rod.

If you have a puller, try it first. Of you don't, make sure the bolts for jacking directly over the bearing itself and not over the cast portion whare you will create a problem by making indentations to interfere with the bore.

 

[brucer]

counterbalance might also be pressed on also.. might be why the bolt holes are in it, might be for jack screws or for an attachment for a puller..

 

[Jack Burton]

counterbalance might also be pressed on also.. might be why the bolt holes are in it, might be for jack screws or for an attachment for a puller..

Agreed. I think the threaded ears are for a puller, not jack screws. Jack screws would crush the shield on the bearing.

The counterweight may be a friction fit, but it would still need a setscrew and shaft-flat to keep it in position.

 

[LightningEngineer]

Alright, I really appreciate the advice, and I'll see what I can do!

Thanks so much guys!