Originally Posted by joe c.
esshup; i ordered the rebuild kit (COM401-MK 115 volt) I've done these before, unfortunately this time I tore the piston cup while installing. thanks for responding.

Oh. I mis-understood. I thought the piston itself was cracked. I don't know of any way to get another cup without ordering the whole rebuild kit. Wait a minute. If you have the cylinder sleeve and a way to measure the sleeve in 0.001" I can match it up to some of the rebuild kits I have here. Post the dimensions if you have them.

You may be able to order a rebuild kit that is for a dual cylinder compressor for less $$ than ordering two single compressor rebuild kits. If you are careful, you should be able to re0use the silicone gasket. I can see if your dimensions match any of the dual cylinder kits I have here.

I MUCH prefer to rebuild the rotary vane compressors than the rocking piston types. MUCH easier and faster.

www.hoosierpondpros.com

[Linked Image from lh6.ggpht.com]
http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).