Piston ring for a VLK1582609?

by Bernie
(Canonsburg, Pa)

VLK1582609 piston ring

VLK1582609 piston ring

The piston ring is torn and it looks like it was bad from day one. It looks like it wasn't seated properly. My son said it takes forever to get up to pressure. It has been that way since it was new about 5/6 years ago. I cannot find a new ring for it. Model # VLK1582609

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Oct 10, 2016
VLK1582609 piston ring
by: James Miller

I am surprised about number of persons with the same issues. I am upset that Kobolt hadn't issued a recall or offered a repair kit.

Aug 16, 2016
EXACT same issue as Bernie - Question
by: DJGray

Bernie, I sure hope you see this and reply. I have the exact same compressor and had the exact same problem. In fact, my piston looks just like your photo. I tried to bend it back into shape and sealed the tear in the piston ring with some JB Weld. Worked beautifully until it hit about 80PSI. Then it ruptured again.

I thought the piston was a single piece, machined together. Are you saying the top of the piston comes off? I can pop that apart and glue a new ring in there?

- damon

Mar 04, 2016
Compression ring replacement
by: Bernie

There is not an exact replacement ring for this compressor so I came up with a fix.

Since this compressor has a 2 3/8" bore I found a similar ring on ebay. OEM CAC-248-2 for $11. Is for a 2 3/8"bore oilless compressor. It is the correct OD but the ID is about 1/8" too big.

I carefully chiseled of the metal ring/washer holding the compression ring on. I centered the new ring on the piston with several small pieces of wire and superglued them in place so they wouldn't shift when I pressed the washer that secured the ring back on.

I used several small clamps and a washer to press the ring back on. It works great.

The pressure comes back up and it does it quicker. The instructions with the new ring said to install it with the cup facing up and the original was installed upside down.

Sorry didn't take pictures.

Feb 23, 2016
o-ring
by: Doug in s.d.ca

(It looks like and "O", maybe flat)

Take dimensions and go looking for something close. it'll be metric.

They go by overall diameter and round cross-section diameter.

Good luck.

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Kobalt VLK1582609 piston removal?

I have Kobalt (VLK1582609)and I'm trying to remove the piston to replace the ring.

Only way i see how is to remove the arm that attaches to the belt pulley.

It has a Allen screw.

I can't get it to break free.I have sprayed it numerous times with PB blaster and even tried an impact driver but still no luck.

Am i doing something wrong?

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Mar 04, 2016
About piston ring
by: Bill

See the previous comment about replacing it. Bernie figured out how to get a new piston ring.

Jul 09, 2015
piston removal
by: Anonymous

forget about trying because you can't buy just the piston. you have to buy motor and pump assembly. go figure

Mar 21, 2015
piston rings and stuff
by: Doug in s.d.ca

Maybe it's left hand thread?

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How to change VLK1582609 piston ring

How can i change the o-ring in the piston? I have the piston out. But not sure how to change it.

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Mar 04, 2016
Compression ring replacement
by: bernie

Please see earlier comment for how Bernie did it.

Feb 26, 2016
o-ring
by: Doug in s.d.ca

You have the old one off, I take it?

Putting it on is like putting on a tire or fan/drive belt - you start it, and use fingers or a smooth tool to walk it into place.

Use some lube if you need to, spit is generally safe.

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