Atlas Copco its like it locks up

by sam shaw
(nora va)

recently purchased a mack service truck with atlas copco compressor. worked fine for about a week is PTO driven,,now u most open tank drain, release air down to 25psi for the compressor to kick back in..if u dont it well try to ingage however its like it locks up release of pressure to let it ingage..what do i look for ..

Comments for Atlas Copco its like it locks up

Click here to add your own comments

Nov 10, 2014
by: sam shaw

thank you very much for your time i will try the site if i get answer i will share with ya for future reference on this site..

Nov 09, 2014
by: Doug in

You need to go to the atlas-copco site.

I don't know which manual you need/want. but they can probably help you figure that out, either email or fone.

Good luck.

Nov 08, 2014
by: sam shaw

1st have no manual.. if you no were i could purchase 1 plz let me know..2 just found a number it is///AML228387. i no nothing of this compressor or the history.. i am barely making it and i am pretty well mech i said it worked just fine for a while it wont restart unless u bleed of air like a relief valve is not working properly ..i will b glad to pay for any trouble shooting guide,or any other info.. my phone # is 276 395 1726 if talkin would b better... thank you/

Nov 06, 2014
Locking up Atlas Copco
by: Bill

It would be useful to know the model number.

Carl, once again, thank you for your help.


Nov 06, 2014
Check Valve
by: Carl

It sounds like the check valve isnt seating properly, you find this between the tank and the pressure switch in a brass coloured block (if it is a piston machine) drain the tank totally then have a look at it, it should have a spring and a plastic or rubber thing, clean it up and refit
Hope that helps


Nov 06, 2014
lock up
by: Doug in

I don't suppose it came with the manual?

If so, start there; if not, get it.

These things work well, but they need maintenance.

You need the manual to know what to do.

Click here to add your own comments

Add your own question or comment. It's easy to do. How? Simply click here to return to Atlas Copco Compressor Issues.