CH 6 hp 6VT619503AJ has shattered pistons

by Vicki
(Missouri)

This is an update to my original post. (Re-printed below) After taking apart the compressors, it was discovered BOTH had shattered pistons! The one which hadn't been used much previously, had a shattered crankshaft, too. Both had plenty of oil. Anyone have any ideas as to why both would go out so close together? Or were they designed to self-destruct after fewer than 10 years?


Here's the post I put on here a day or so ago:

CH 6 hp 60 gallon, under 10 years old, Model VT619503AJ. Have two of them, bought at same time. One (I'll call "A") has been mostly idle in barn, used to pump tractor/atv tires occasionally.

The other ("B") has been used almost daily. We recently relocated A. It had had some 'dirt dauber' nests in it, which were cleaned out. It would run, but wouldn't fill the tank (husband said something about 'blow by'???). So, he took off the compressor from B, which had been running fine, and put it on there. B worked for about a week or so, but now it, too, won't work. It makes a high-pitched squeeling sound. HELP!!!!!

Comments for CH 6 hp 6VT619503AJ has shattered pistons

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Dec 16, 2013
pistons
by: Doug in s.d.ca

Well.
Huh.

Weak castings - internal flaws like embedded slag or something?

I wouldn't mind seeing some pictures, if you would post...
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To add pictures, please start a new thread, then you can add up to 4 photos.

B.

Dec 13, 2013
Temps
by: Vicki

The barn was not heated. We had "B" in an unheated area as well. The new place is heated, but the heat only kicks on at about 50 degrees or so.

Dec 13, 2013
pistons
by: Doug in s.d.ca

Does seem odd.

But the common factor here seems to be the move(s).

Is the new location maybe much colder than the barn?

Perhaps fatigue from super cold air hitting the warm/hot piston when it runs?

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WL604006AJ air compresser leaks air from unloader valve

by jaime
(La Feria,Tx.)

I have a WL604006AJ 13 gallon 4hp 120 v Campbell hausfeld air compressor. When it reaches 125 psi it shuts off which that's what its suppose to do, but air comes out from the unloader valve. Is the valve the problem or is there something else that's wrong?
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In order to understand the issue Jaimie, you need to understand how the unloader valve works and what it does. That's covered on the page about unloader valves.

When you understand how the unloader valve works, then the solution to the problem your Campbell Hausfeld air compressor is experiencing will be clear.

I suspect it is not the unloader valve that is the problem, rather, it is likely the tank check valve. Read that page too, K?

B.

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WL6007 help me understand unloader/check valve

by John
(Niagara Falls, ON, Canada)

I understand the purpose. But I am trying to understand what actually happens.

My C-H model WL6007 unit has the T-Valve (check valve) entering the tank, with the tube from compressor head. With small line to the control.

The small tube is labeled as the unloader tube in the parts manual. When the main control knob is set to off, the tank begins to bleed via this tube. However, when in Auto, and it reaches cut-out, it should act as unloader, but I am worried it does not.

My question is: how does this know when to bleed the tank, or when to unload the compressor, via one tube?

I ask this because I think I have the issue where I do not get proper unloading. I blow the breaker only on recovery, not first start. I originally thought it wouldn't recover when 'hot', but reading this site I now think it's an unloader issue.

John
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Hi John... if you read the pages about air compressor check valves and those on the air compressor unloader valves, there is not much more I can add in response to your question.

They work together so that when the unloader valve is open when the air compressor is stopped, air stays in the compressor tank. When the compressor starts the unloader valve is supposed to close so that the compressed air is directed into the tank and NOT out the unloader.

See the troubleshooting section for pages, too, on why air leaks from the unloader valve when the compressor is stopped.

Bill

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Remove flywheel to change motor bearings

by Jack

Motor Armature with Flywheel

Motor Armature with Flywheel

I have a Campbell Hausfeld Model WL505807AJ portable Air Compressor. I'm replacing the piston assembly and piston bearing after they destroyed themselves after many years of operation. While I'm at it I'd like to change the motor bearings. One bearing is easy enough; however, the bearing on the side of the flywheel (WL-004701) is a problem. How is the flywheel removed? Is it threaded on? Left Hand?

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