Re: Air Dryer Replacement Reply #25 – October 18, 2014, 07:58:03 pm I had just ordered a replacement desccant filter cartridge kit from Findit parts. The Part # is: 201160-C which is DQ6036 and belongs to the Haldex Pure Air Plus. Guess I will return the kit. Will look into replacing the Haldex Pure Air Plus with OEM stuff. Quote Selected
Re: Air Dryer Replacement Reply #26 – October 18, 2014, 09:22:02 pm Scott,My coach is a 2002 U320 #5957 and uses the Haldex Pure Air Plus with major Repair kit DQ6020. I'd bet our coach uses the same. Quote Selected
Re: Air Dryer Replacement Reply #27 – October 19, 2014, 12:46:53 pm Any one know what specific air dryer failure causes the desiccant powder to disperse through the system? Quote Selected
Re: Air Dryer Replacement Reply #28 – October 19, 2014, 01:03:23 pm The only one I could think of would be a breakdown of the materials holding it in place. Obviously from total lack of service for many years and the interaction of "stuff" coming from compressor.Brett W may have a better understanding.JohnH Quote Selected
Re: Air Dryer Replacement Reply #29 – October 19, 2014, 01:08:51 pm What I believe causes WHITE powder in an air system is that the air dryer is not serviced and moisture builds til the desiccant cannot handle it ( or heater is failed ) desiccant then hardens and repeated cycling forces it as a powder powder into the system. There is or should be a filter but with age it breaks down also. Servicing an air dryer is simple EXCEPT for reaching it in some coaches where it is positioned.REBUILDING an air dryer also is not hard, IF you can reach it or you can remove it from the frame.Gary B Quote Selected
Re: Air Dryer Replacement Reply #30 – October 19, 2014, 01:15:16 pm What is confusing to me is that I replaced the desiccant cartridge about 1 year ago. The service/replace interval shows: "Service as Required or every 400,000 miles" so - either the canister was defective or some thing else caused the powder to disperse. If the heater caused the problem - How can I test the heater in the air dryer? Found the test procedure on Beamalarm. Thanks Barry.Guess I'll have to check for power to the heater. Down loaded the "Haldex Pure Air Plus Trouble Shooting Guide". Will work on it in the next day or two.Thanks again. Quote Selected
Re: Air Dryer Replacement Reply #31 – October 19, 2014, 02:14:08 pm I think non or little use as is in our case does not contribute to long air dryer life. I don'remember servicing my air dryer in my Pete and never had a problem with it. Was putting over 102K miles a year through all kinds of weather. Never had a problem with the dryer.Roland Quote Selected
Re: Air Dryer Replacement Reply #32 – October 19, 2014, 03:36:55 pm Just to let you know I purchased a rebuild kit for my air-dryer from Foretravel some time back (05/2013). After installing the new kit (07/2013) and the new desiccant cartridge I noticed the engine air compressor was cycling on and off more frequently and the pressure gauges in both tanks were bleeding off faster. I checked and rechecked the installation and everything checked OK. I was seeing white powder when I purged the air tanks. It was only when I removed the canister that I saw the problem. The new desiccant cartridge failed and scattered white powder through out the system. I called Foretravel and they stated they had never heard of a new desiccant cartridge failing. I also called Haldex to inquire if they had any trouble with cartridges failing. Don't expect any help from Haldex as their products don't fail. Well sometimes they do and I had one. I have been told there have been new desiccant cartridge failures experienced by other non Foretravel motor-coach owners. I think there may have been a bad production lot and the factory is covering it up. I kept that cartridge for a long time but then needed the room and tossed it. Now I wished I had kept it. I replaced the whole drier unit with one from NAPPA. After a lot of work and new check valves I no longer have that problem. I will buy a complete unit from NAPPA to replace the one I have now. It is a little more expensive but less hassle. And yes, it is still possible for the rebuilt unit or even a new unit to fail. Quote Selected
Re: Air Dryer Replacement Reply #33 – October 19, 2014, 03:40:16 pm It can take as long time for powder in the wet tank (and all others) to work out of your system. Flushing the wet tank is probably the best way to stop the contamination, - I should have done that. Check vales seem to be the most affected. I still are seeing just a little white power from all the tank drains, 2 years after replacing the dryer\ with a full rebuild kit. Quote Selected
Re: Air Dryer Replacement Reply #34 – October 19, 2014, 04:20:55 pm Yes it takes a lot of work to fix this problem. I have went through my air system 3 times, blowing out the air lines, cleaning the check valves, rebuilding the six packs, etc. I just recently replaced the old check valves with new ones. I haven't seen any more powder so I suspect any powder left in the system has stablized. The coach now holds pressure like it use to. If I had this happen again I would flush or replace the tanks. Quote Selected
Re: Air Dryer Replacement Reply #35 – November 19, 2014, 08:52:50 pm After much reading on this fofum as well as on Beamalarm we:Replaced the Air Dryer today with a reman. Haldex from NAPA. PN DA33100X. We changed out Bill B's last week and did ours today. The Air dryer was on sale and we also took advantage of a 30% off coupon. Thanks to Bill B for that. Netted out at about $180.00 Did not flush the tanks. Saw just a bit of white powder when draining the rear wet tank. None in the front tanks. Also had a slight coating on the exhaust elbow from the dryer. Hopefully the contamination has had limited negative impact on the system. The removal of the old dryer and the install of the rebuilt one was not difficult - however - there is always one bolt........ Cut over one hour from the removal and install time.Went to a local steel warehouse and had them cut 8 pieces of 2" x .250" square tubing for frame support. Placed one by each air bag. Thanks to Bill again. The end cuts were not perfect but serve the purpose. The tubing was rusty as we did not buy Prime tubing. We wire brushed the rust off and painted the tubing with Rustoleum. $90.00+/-.Glad it's done.Again....I could not have been able to accomplish this task without the help of all of you. Quote Selected
Re: Air Dryer Replacement Reply #36 – November 19, 2014, 09:08:29 pm Quote from: Carol & Scott – November 19, 2014, 08:52:50 pmWent to a local steel warehouse and had them cut 8 pieces of 2" x .250" square tubing for frame support. Placed one by each air bag. Scott, What length did you pick? Trent Quote Selected
Re: Air Dryer Replacement Reply #38 – November 19, 2014, 11:29:45 pm Quote from: Carol & Scott – November 19, 2014, 09:37:24 pm11"Scott, Sounds like a safe compromise. I was afraid all of my bags may not allow a 12" safety stand. My belly may want that extra inch, but that's a whole 'nother story. Trent Quote Selected
Re: Air Dryer Replacement Reply #39 – November 19, 2014, 11:34:18 pm Where did you find the 30% coupon? Quote Selected
Re: Air Dryer Replacement Reply #40 – November 20, 2014, 12:08:59 am Thought I would share my experience as well... Originally I made eight 11" high 2"X2"X.250" square steel stands (which was the height that most on the forum reported using) and found that they could have been 12.5" high and still fit, though just barely. I missed that extra height under the coach so bad, I added 1.5" thick pieces of solid oak to the 11" stands while welding underneath the coach. Subsequently I bought four 12" long 2" hitch receiver tubes from Harbor freight (all they had in stock). They are made to receive 2" square hitches, so I put four of the original 11" ones inside the four HF hitch receiver tubes so they actually store in a smaller foot print. One of these days I will make four more 12" stands out of square tubing. I figure it is good to have that ½" clear with the air bags up because it can take a few tries to get up high enough to get all the stands in without having to air up again, especially if there are is any leak down at all. I also made four ramps for the rear and two for the front out of 2X10's. Three layers for 4.5" in the rear and two layers for 3" in the front.DonEdit: link added;Class III 12 in. x 2 in. Standard Receiver TubeQuote from: TulsaTrent – November 19, 2014, 09:08:29 pmScott, What length did you pick? Trent Quote Selected
Re: Air Dryer Replacement Reply #41 – November 20, 2014, 07:34:06 am This is an ahaa moment. Never thought of ramps and stands. Much easier now to get under. Quote Selected
Re: Air Dryer Replacement Reply #42 – November 20, 2014, 08:16:44 am Bill B found the coupon and was nice enough to share it with me. I understand that all NAPA stores have a promotion that occurs once a month that offers 30% off for purchases made before 9 AM. I would suggest that you call your local store and ask them when the sale occurs. Quote Selected
Re: Air Dryer Replacement Reply #43 – November 20, 2014, 07:16:50 pm Hey Don, I really like your ramps. Would you mind sharing the dimensions. Thanks, Ron Quote Selected
Re: Air Dryer Replacement Reply #44 – November 21, 2014, 12:47:11 pm I took a ruler to the photo and appears they are approximately 42 inches long. Personally I would have made the top one a little shorter so that there would be more room on the middle board. Quote Selected
Re: Air Dryer Replacement Reply #45 – November 21, 2014, 01:24:14 pm John,I don't have them with me to measure, but here is a summary of what I think I remember. By the way, the chocks are 8" front to back and there is enough room on the top layer for the full foot print to be supported. Anyway, I believe that the overall length is 5' so that I could make two bottom layers out of one 10' 2X10. The second layer could be longer but was never intended to be a rest position as the intent was to get as much clearance underneath the coach, as opposed to being used as an aid for leveling. That said, the footprint of the tire is supported on the second layer while it is resting against the top layer (cut at a 45º angle). I would have responded to this question with definitive measurements, but not having the ramps with me I can't say with certainty that my recollection is correct... but I know it is close. However, the exact dimensions are not that crucial and part of the reason I chose what I did was to minimize the cost by getting the most layers out of the fewest boards to buy. That said, the following is copied from a response (edited to be clearer... I hope) to a message from a member requesting info;I counter sunk some 5/16" lag bolts of varying lengths depending on how many layers of 2X10's they were traversing. The ramps are not attached to each other. I did drill two holes in facing sides of the second layer of each dualie pair and used some ⅜" all thread with two nuts to act as spacers to match up with the duels. The holes were just sized to just allow the all thread to be inserted, but take a bit of persuasion. I used the cheapest green Douglas Fir lumber I could find in that size. To the best of my recollection, the longest layers are 5' and were made out of 2 2X10's ten feet long. The next layer is about 3', and the top about 2' with just enough room to screw on a wheel chock and still have the foot print of the tire fully supported on top.Pressure treated lumber would likely be a more durable, but I thought it might have some detrimental effect on the tire rubber. Anyway, I went cheap! I hope that helps...DonQuote from: John Cooper – November 21, 2014, 12:47:11 pmI took a ruler to the photo and appears they are approximately 42 inches long. Personally I would have made the top one a little shorter so that there would be more room on the middle board. Quote Selected
Re: Air Dryer Replacement Reply #46 – May 18, 2015, 08:16:03 pm Scott, Any special tips on doing the dryer replacement? I have a rebuilt dryer from NAPA and 8 safety stands. Large size wrenches and I been spraying PB Blaster on the bolts this past week. Which bolt was the difficult one? Going to tackle the job on Thursday. Thanks--Jim Quote Selected
Re: Air Dryer Replacement Reply #47 – May 18, 2015, 09:57:26 pm Hi Jim-As I recall the hardest was the 90deg. Attached to the dryer. We removed it after the dryer then removed the fittings. It took two of us - one to hold the dryer, the other with the large wrench with a breaker bar attached for leverage. Give me a call if you want... 253-882-7120. We are in mountain time.Scott Quote Selected
Re: Air Dryer Replacement Reply #48 – May 19, 2015, 04:41:03 pm Thank You Scott. Will call if/when I run into trouble Jim Quote Selected
Topic: Air Dryer Replacement