The Stovebolt Site Forums The Parking Lot Big Bolts 1957 6400 Air Brake Compressors

Where can I have one of these compressors rebuilt? If there is such a thing. Mine went south on me. It quit putting out air. There were some loose parts that have signs of being knocked around on the intake side of the compressor and my guess is they have something to do with the opening and closing of the intake valves. I don't know my terminology when it comes to these compressors and I'm not sure if replacing this component will suffice. The component I'm speaking of is a rectangular looking piece that sits left to the air compressor's muffler.

I took the head off and the pistons and cylinders look fine.

Check with the big truck parts suppliers. I have been away from the big stuff for many years but we used to get comps. rebuilt.

Hy rautru, it could be that the compressor unloader pistons became stuck in the open position (quite common) that would stop the compressor from pumping. Could you take some pictures of the compressor and find the identification plate on the side of the block and post the pictures and tell us what the plate says? They do sell unloader piston kits for the popular compressors, hope that helps.

Hey 3B,

will do. I should be able to take pictures on Wednesday and try posting links on Thursday. These unloader piston kits you have are DYI (Do It Youself)? I am mechanically inclined. And how much do they go for?

Raul

Hy rautru, yes the unloader pistons are fairly easy to install, as long as the bores they fit into are clean.

Is your truck Full Air or Air Over Hydraulic?

Mike B

Mike, Was full air, even an available option on a 6000 series truck in 1957 ?

The truck is Air Over Hydraulic.

No Spanky, not available on 6000 trucks...I only asked as I wanted to know if it had been converted to Full Air.

My '57 9200 LCF has Air Over, but it has a full air treadle pedal. I've never seen another one like it.

Mike B

Photo of compressor. Photobucket

I can't believe it. I actually learned to add a link to a photo. It's gonna be a great day.

Well, turns out the compressor is completely shot. Is there a modern style that bolts up or do I have to search high and low for one?

depends on just what you need, might start with this site and figure out what's required, or see Bendix or a reman place, might be able to get that one rebuilt

Bill

Thanks everybody for the input. I ended up getting an old I-H Loadstar airbrake compressor on eBay that i'm gonna try to make work.

You shouldn't have a problem the belt driven compressors are pretty universal it may even mount the same.