Air problems again

[jackofalltra]

I recently replaced my air dryer filter and purge valve.worked ok for 2 weeks,then started purging every 2-3 minutes.I then replaced the govenor, still purges.no leaks can be found, hold air to 60 lbs over nite Pumps to 125-135 good. Pressure..Not sure what else to check?Could the check valve on the wet tank be bad? This is a Haldex system on Freightliner with Cummings 300.

[twinboat]

Could be the check valve after the dryer or on the wet tank.

Remove the drain valve from the wet tank and install a gauge.

Watch it after the dryer purges. If it drops fast, remove the gauge and connect shop air to that fitting and find out where the air is leaking out. Could be one of the 1/4 " lines to and from governor, or back thru the check valve.

[jackofalltra]

I bought a 1/4” line & fitting to hook to my shop compressor.now could I remove the line from the govenor to the dryer and put 125 psi on the dryer and see it it stops?

[jackofalltra]

Hey you nailed it.was the check valve, put in
Backwards be myRinghaver mechanic..I fixed it myself with your help.Thanks very much.

[jackofalltra]

That was it,thanks