Haldex / Midland Check Valve Rebuid Kit

Topic: Haldex / Midland Check Valve Rebuid Kit (Read 3145 times) previous topic - next topic

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #50 – June 08, 2017, 11:34:08 am

Quote from: Travelin' Man – June 08, 2017, 09:43:47 am

I looked on the Haldx website and cannot find a new Pure Air Plus.
They are all remans.................

Air Plus is a discontinued design.
Hasn't been made new for years. All are remanufactured. Buy ONLY factory Reman'd units for QUALITY purposes. Most reman'd have been reman'd many times over. Think garbage truck............times ten.
Forums site search:
Re: On the subject of air dryers
HTH
Neal

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #51 – June 10, 2017, 05:45:00 am

I'm unsure if an isolation valve is needed on our coach. Searching and reading posts points to "yes" if one has a certain brand & model compressor. Anyone know the answer for the combination of an 03 450HP engine combined with the Haldex DA33100X dryer?

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #52 – June 10, 2017, 07:53:05 am

Mark, the easy way to tell if you need one is to look at the air dryer installed in your coach.

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #53 – June 10, 2017, 08:03:24 am

Quote from: Bill Willett – June 10, 2017, 07:53:05 am

Mark, the easy way to tell if you need one is to look at the air dryer installed in your coach.

Bill, do you mean to see if our dryer already has an isolation valve? If yes, I have checked and ours does not. If I'm reading older posts correctly, some folks have added isolation valves but I'm not sure if it is needed for the ISM450 / Haldex DA33100X combination.

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #54 – June 10, 2017, 08:57:16 am

Mark, if you do not have one now, i would not change the system just because someone said they put one in there system, my dad always told me if I wanted the freshest water go to the head of the stream, in this case it would be James T at FT.

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #55 – July 01, 2017, 07:42:20 pm

R&R'ed the wet tank and front tank. Harvested existing plumbing bits and pieces where possible.

On the wet tank was able to rebuild one of the check valves, but the other one was frozen so replaced it. Replaced all PTC connectors and trimmed each piece of tubing by approx. 1/4" to remove the previous indentation where the PTC o-ring was seated.

R&R'ed the front tank as well. Wow, it has a lot of connections! Same process as above except I had already rebuilt or replaced those check valves. Installed a new protection valve and new non-return valve.

2 down, 2 to go. If I'm not too stiff, tomorrow is the rear tank and slide out bladder tank.

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #56 – July 01, 2017, 11:17:48 pm

Mark, bring your coach to our place and put it over the Pit. No sore backs using it.
JohnH

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #57 – July 02, 2017, 05:30:27 pm

If your able to, a parts list with numbers, would be very helpful to us that may want to do the same project.
Thanks for the pictures.

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #58 – July 04, 2017, 05:30:20 am

Quote from: Lon and Cheryl – July 02, 2017, 05:30:27 pm

If your able to, a parts list with numbers, would be very helpful to us that may want to do the same project.
Thanks for the pictures.

Good morning, Lon. That sound a like a good idea. I'll get something written up.

Mark

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #59 – July 04, 2017, 05:43:04 am

and........ we're done! Got the last two tanks R&R'ed. The rear tank wasn't too bad, but the slide out tank was a bear. The issue was the lack of clearance between the tank and the gen set doghouse. A friend came over and we were able to loosen the doghouse's rear wall enough to be able to pry it out. Thankful he happened to stop by!

Took my home compressor and charged all 4 tanks to 140 PSI and leak checked. Found 2 leaks, one on the front tank and one on the wet tank. The first was a teflon tape application fail. Easy fix. The second was on the pop off valve where the OEM thread sealant between the valve and a reducing bushing failed. Another easy fix.

Here are a few photos of the finished product.

Thanks for all the help and encouragement during this project!

Mark

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #60 – July 04, 2017, 08:55:00 am

Beautiful installation! Will certainly help avoid future air system problems, PLUS provide some much welcomed "peace of mind". Well done!

Let's see...figuring a "professional" labor rate of $100/hr (if you're lucky), you probably saved enough cash to buy yourself a nice cold drink!

Happy 4th of July!

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #61 – July 04, 2017, 08:57:23 am

Nice job, Mark.

Brett

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Re: Haldex / Midland Check Valve Rebuid Kit

Reply #50 – June 08, 2017, 11:34:08 am

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #51 – June 10, 2017, 05:45:00 am

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #52 – June 10, 2017, 07:53:05 am

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #53 – June 10, 2017, 08:03:24 am

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #54 – June 10, 2017, 08:57:16 am

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #55 – July 01, 2017, 07:42:20 pm

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #56 – July 01, 2017, 11:17:48 pm

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #57 – July 02, 2017, 05:30:27 pm

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #58 – July 04, 2017, 05:30:20 am

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #59 – July 04, 2017, 05:43:04 am

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #60 – July 04, 2017, 08:55:00 am

Re: Haldex / Midland Check Valve Rebuid Kit

Reply #61 – July 04, 2017, 08:57:23 am

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