932A2 air pressure issues....or Did anyway

[Retiredwarhorses]

So I was doing my weekly PMCS and run on the M932a2. Started to build air and heard the normal moans and groans of air building and CTIS inflating in hwy mode...after about 15mins I noticed it was not done....I heard air expelling form the bottom of the dryer and the air pressure was stuck at 90 or so.
turned it off, started over and still same...drained tanks and started over...now,it built no pressure. I still had the air expelling from the dryer...so I applied air direct to the front left gland hand...aired up but still expelling from the dryer...I held my hand over the hole to see how much pressure...then wham, it stopped.
and now the pressure built up to 140 and the governor kicked in and stopped.

drained tanks, started again...aired up...This time I took the ebrake off and it was dumping from the intake stack, cycled through that a few times and it stopped....now appears ok.

so WTF...is my dryer going tango uniform? I have never replaced the filter, and it's quite new "looking" from rebuild. 24hrs since rebuild.

 

[Scar59]

Time to service the dryer, the moisture it works out of the system will foul the valve and rust the canister. Pretty easy to service, if the canister is not rusted on at the threads. Several kits available to change out the canister, purge filter, and heating element. All commercially available.

 

[Suprman]

Air dryer expello valve is stuck. Stick your finger in and push up. It will stick again though. Replace the dryer its cheaper than rebuilding it and the expello valve is replaced from inside.

 

[Retiredwarhorses]

Sounds like it....won't hurt even if it don't fix it.
i know folks on here have them for sale...maybe they will chime in.
does that sound like the issue?

 

[Suprman]

I have them

 

[Retiredwarhorses]

I see some Haldex PN50011k purest for sale...says they are the new improved type...needs a mounting mod done.
Is this a sure fit?

 

[Retiredwarhorses]

I have them

i just bought from fastcashmoneyman.

 

[Retiredwarhorses]

I have them

i believe that's you...lo

 

[Suprman]

yup

 

[Csm Davis]

Sounds like it....won't hurt even if it don't fix it.
i know folks on here have them for sale...maybe they will chime in.
does that sound like the issue?

Might just need cleaning, most I have had problems with was just jammed with crud in the valve.