Shoebox F10 users

[dmw6455]

I am trying to resolve a leak that does not allow the compressor to bring up a tank beyond a little over 3000 psi. I have thoroughly cleaned the cylinders and replaced all the o rings. I have reset the pistons making sure they are the right depth. Two questions for anyone familiar with these machines. First, when reconnecting the high pressure line to the left side of the cylinder is there only a rigid black washer or also a white o-ring? Second, on the right linkage I have noticed wear in the bushing that creates some slop in the right to left movement of the block that secures the pistons, wondering if that could have an effect on the pressure as it does not allow for the pistons to move firmly in place? If so, it looks like I would have to get someone to machine one for me.

Thanks for any help,

Dana

 

[dmw6455]

Update. Just took apart the linkage and the holes are now elongated and the bushings are toast. Think it is the end of the line for the unit.

 

[Healthservices]

Dana, please show some pictures.



Allen

 

[Kaeokini]

Aloha Dana,

here’s what I could find in my desk drawer for my shoebox F10.

I think you will have to check the piston stage 2 & 3 bushings for play, I know it’s supposed to be lubed with white lithium grease and the felt with silicone oil. Hope this helps.

Aloha,

Keone

 

[Kaeokini]

Also there is a black washer & a white o-ring in the air line fittings.

If there is play in the piston 2 & 3 bushings, then they need to be replaced. The piston should not move up & down, only left to right when facing the unit.

Aloha,

Keone

 

[dmw6455]

I now realized the little o-ring next to the black washer fell off. No problem to fix that. The linkage is toast alongwith the bearings. Sounds like the one on Ebay was made slightly short. Maybe my friend could make me a new linkage bar and press in bushing. Thanks.

 

[FrankinFairfield]

No clue but I have a photo and a flow chart:

 

[Greasemagnet1]

You can buy new bushings for the linkage arm from McMaster Carr. I paid .86 each.

Shipping cost more than the bushings.

 

[dmw6455]

Do you have the exact description as the only bushings are see are pretty expensive. If you don't mind, maybe you could send a link. The one's I see are drill bushings for $8+. Thanks.

 

[Greasemagnet1]

The link, copy/ paste is not working, When at McMaster Carr type in their search bar 6338K411. I used three for the rebuild on mine. I was wrong on the price, they are not .86, they are . 81.

 

[dmw6455]

Thanks

 

[thumper]

My early model did the same thing, and turns out the sealing surface for the check valves was corroded. Wouldn't offer a smooth surface for the oring to seal against. 

I made a little tool with some sandpaper on the end to resurface that sealing surface. 

Something to check if you have it apart again. 

And also, get out the soapy water and soak it down. Even a tiny leak on the second stage can really limit output pressure and speed.