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Another Air Problem

I am currently dead in the Sears Parking lot at Hwy 21 and Loop 304 in Crockett, Tx

Well, at least immovable.
5-7 miles outside of Crockett the "level System" light came on and the white air pressure gauge had dropped to 65 or so.
I knew I was in trouble.
By the time I got here I was 60 and below on both tanks. I'm down to about 40 now.

With the engine still running I felt around the D2 governor and the top port was exhausting air. The pressure was low enough for me to hold in closed with my finger.
I taped a Kleenex to the end of a broomstick and used that to determine I could not detect air exhausting from the bottom of the Air Drier.

Should the D@ be constantly exhausting?

I ran the engine foe a good while and air pressure never built up.

Suggestions appreciated.

Re: Another Air Problem

Reply #1 –
Elliott,

It sure sounds like either the D2 is stuck in the unload position or the stem inside broke. I would sure swap out with a new governor. (Do the cheep stuff 1st)  Make sure that you install the plugs in the proper places on the new one.

Pamela & Mike

Re: Another Air Problem

Reply #3 –
Here is the info on your governor.

Keith

Re: Another Air Problem

Reply #4 –
CUT-IN POSITION
Apply soap solution around the cover and to the exhaust
port. Slight bubble leakage permitted. Excessive leakage
indicates a faulty inlet valve or lower piston o-ring.
CUT-OUT POSITION
Apply soap solution around the cover and to the exhaust
port. Slight bubble leakage permitted. Excessive leakage
indicates a faulty exhaust valve seat, exhaust stem o-ring,
or o-ring at the top of the piston.
If the governor does not function as described or leakage is
excessive, it is recommended that it be replaced with a new
or remanufactured unit.

I thought you may have a sticking gov' and copied the above from Bendix web. I would let all air pressure out then spray into Gov' someWD40 or very thin silicon spray and then give the thing a bit of a thump with heavy tool. Run engine and see if it loosens up if it is sticking. If that works then for sure you need a new one.

JohnH

Re: Another Air Problem

Reply #5 –
Elliott,

If you need a parts store there is a NAPA out on the NE Loop IIRC. There is also a O'Reillys on the loop that may be closer to your location.

Pamela & Mike

Re: Another Air Problem

Reply #6 –
Try these people.  I called and they have them BUT take old one as you may need to match it.  They close at 6pm
Keith

Address
1407 East Loop 304
Crockett, TX 75835
Get Directions
Phone Number
Tel: (936) 544 - 3287
Fax: (936) 545 - 0667

Re: Another Air Problem

Reply #7 –
Well, not a great day.
The mobile mech. replaced the D2.
Still doesn't air up. Says the Purge valve is leaking.

I will look back through the forum comments on this rather extensive topic and go from there.
I did a DQ6026 replacement last April but don't know as yet whether the Purge valve was part of that, whether I can/should replace just the purge valve, or whether I should just replace the entire dryer.

The other issue is which part number(s) to obtain. My current Haladex unit has the external Eco valve like Barry's.

In any event, the Sears lot is nice and big and empty.

later
 

Re: Another Air Problem

Reply #8 –
Pump the brakes until air is gone then start the motor.  My d2 was sticking badly the day I picked up the coach.  Had to go to zero to get it to release and fill.

Had brakes lock up several times. 

New D2 went from 90-110 to 120-130 and now the brakes work better

Re: Another Air Problem

Reply #9 –
Haldex DQ6026 is basically a filter change kit, with both filters and spare high pressure relief valve that often is not installed. Purge valve is part of a 'bottom' maintenance kit, that is much more difficult to install than changing filters. Our current philosophy is to replace the whole dryer with a factory rebuilt unit, which comes with new filters. Difficulty of replacing the unit is related to the large tight air fittings. We sometimes change just the two filters with the DQ6026 kit.

We prevent junk or water from entering the D2 governor's open vent, by screwing a brass hose fitting into the vent and running a hose down.

Re: Another Air Problem

Reply #10 –
the DQ6020 kit is the purge etc kit and I feel the part that many do not do as well is the 6026 filter kit. easy job and makes you old dryer just like a replacement one. I do it every 2 yrs for safety and lack of problems on the road.
JohnH

Re: Another Air Problem

Reply #11 –
John,

I agree.  It is OK to just do the filter replacement, perhaps once.  But after that, I go with a factory reman or factory new (price dependent).  That way the filters, VALVES AND HEATER ARE NEW.

Re: Another Air Problem

Reply #12 –
Does not replacing all the parts as I mentioned make it NEW again. The heater can be done by buying that too, but what I do is put 12v on it while off and check it still works, so in essence the unit now is a remanufactured one at less price?
Yeah, I know some cannot do it but most here on forum are willing learners.
JohnH

Re: Another Air Problem

Reply #13 –
Is every two years often enough? Is there any maintenance required between the complete rebuild every two years?

Larry

Re: Another Air Problem

Reply #14 –
Larry, every 2 yrs is more than enough but as I like little things to do I have no problem doing it for the peace of mind- or at the least I have done more than I need to and if it does cause problems while on road it is not because I did not keep up maintenance on it. No interim work required except drive it.
John

Re: Another Air Problem

Reply #15 –
Our dryer has not been rebuilt / replaced in 5 years.

When Bernd took it out it was dry as a bone.

Is rebuild still called for?

best, paul

Quote
Is every two years often enough? Is there any maintenance required between the complete rebuild every two years?

Re: Another Air Problem

Reply #16 –
 Paul, for peace of mind yes the filters need to be replaced and hopefully he did that being the person he sounds like and with his knowledge of Diesel trucks etc. When you think about all the times the purge valve and Turbo valve have moved while driving I would suggest it behooves you to replace no matter how "dry" it all is inside. Of course this is just my opinion but this Dryer has caused quite a few problems with members lately while on the road and most cannot work on it when it does pack up as it is usually in an awkward spot to get too. It is called "Preventative Maintenance"
JohnH

Re: Another Air Problem

Reply #17 –
I agree with John.

Dryers can fail in a number of ways-- and as we have seen here on the forum, some very expensive (i.e. when desiccant breaks down and gets in all the valves and brake parts).

Wish they had a "red flag" that said "I am about to fail", but not possible.

Unless you drive a LOT of miles and/or drive in a very humid climate, I see three years as a reasonable service interval.

Re: Another Air Problem

Reply #18 –
Was wondering if the Brays got moving again?  Their problem sounds EXACTLY like the one we had in August - replacing the dryer with a new one did the trick.  We first replaced the governor also, but that wasn't the problem.

Dryer is right up there with tires and brakes for me now - things not to skimp on!

Re: Another Air Problem

Reply #19 –
Update
Monday early afternoon
Called FOT and spoke to James T.
Was advised that there are really only three possible problem areas, D2, Dryer, Compressor.
Said shop policy would not allow FOT techs to moonlight and work on the coach.

Called Good Sam and eventually got a mobile mechanic out of North Zulch, about 60 miles away.

Monday late afternoon
Replaced the D2 but didn't solve the problem.
Mechanic crawled under the coach and said air leaks from purge value.

I paid him for the trip, thanked him,  and said I would ask Good Sam to arrange a tow into Nac in the morning.

Called Good Sam and started the process.

Tuesday Morning
Since I have an appointment with Berndt Ramspeck on Wednesday I wanted to decide where to deliver the coach, FOT for the alignment and repair or Brendt..

Called FOT Service Writer 7:30 and told him my problem. I said I would probably not be able to keep my appointment with Wayne. He said maybe Wayne could look at it while he was doing the alignment. I suggested that that would be a problem with no air and probably brakes locked.

Asked what would happen if I got the coach to FOT today, could it be worked on? Was told the next service appointment time was in Feb but maybe they could squeeze it in sometime between now and then.

Went to the web. 
Read what I could find on the Forum on replacing Air Dryers. Thanks guys!! Determined that the part I needed to replace the entire dryer is a DA33100X .
Billie Jack said they had sold their last one last week.

Went to the web again. 
Found a remanufactured DA33100X in stock at the Napa store in Center, Texas and told them I'd be there to get it sometime today.

Tuesday mid -Morning
Called Berndt (after he got to work) and said I was out of air in the parking lot in Crockett. Without prompting or further explanation he said "...let me see what I can do to get somebody out there".!!

I explained what had happened to date and that I had the part waiting in Center.
He said since he is a Napa dealer he will have the part sent from Napa, Center  to the Napa, NAC  (or him, I wasn't exactly sure) and someone will pick it up and come here to install it !

Called Good Sam and cancelled the tow.

Tuesday 11:45
Just got a call from NAC. Repair truck is on the way!!

Hope springs eternal!!!