Travel Mode issues Update

Topic: Travel Mode issues Update (Read 1694 times) previous topic - next topic

Travel Mode issues Update

December 10, 2016, 02:27:21 pm

7 months ago I posted a topic reference Help with Travel Mode. Many of you posted ideas and recommendations.

Travel Mode

After 7 months of on and off with the problem we were able to narrow the problem down with the help of Red Tractor, MAZ and Gary Omel. The problem is the protection valve on the right tank. Redtractor recommended we check the protection valve on the right tank. After reviewing the air schematic we found the protection and seen that line 27 feeds the rear manifold. I removed line 27 from the protection valve and no air. With the recommendation of Gary Omel I gave the valve a good rap with my brass hammer and the rear end came up. Time to get a new valve. Gary suggested I take the valve apart and clean it up. Don't know how much a new one runs, but I am looking to replace it with a new one then work on the old one and keep it as a spare. Anyone know the part number on the valve or where I can find the part number.

Thanks to all that helped,
John M

Re: Travel Mode issues Update

Reply #1 – December 10, 2016, 03:58:28 pm

John, take it apart as they are pretty straight forward. It may just need cleaning. I think it has a diaphragm and spring so may just have hung up.
JohnH

Re: Travel Mode issues Update

Reply #2 – December 10, 2016, 04:09:06 pm

JohnH,
We will do that. We are here for 5 days. Should it be lubricated after cleaning?

Re: Travel Mode issues Update

Reply #3 – December 10, 2016, 07:04:38 pm

Here is the part number (and a photo) of the one on our '93. May or may not be the same on your coach.

Part Number Collection

Re: Travel Mode issues Update

Reply #4 – December 10, 2016, 10:14:02 pm

Thanks Chuck. We will compare tomorrow and see how it matches. Sorry you are having problems, But I'm sure MOT will stand behind their work. They may need to re-evaluate the mechanic that did the work.

Thanks again, John M.

Re: Travel Mode issues Update

Reply #5 – December 10, 2016, 11:40:05 pm

John we just got back in. Make sure you remember exactly how it comes apart and clean it out. You can wipe it all with a rag with oil on but do not lube any of it. Make sure all air is expelled from system (that tank ). these are pretty non destructible valves so must have just hung up so make sure all is in good condition. If I can get under coach I will see if I can read a part # if you want. Lots of snow now.

JohnH

Re: Travel Mode issues Update

Reply #6 – December 11, 2016, 12:57:27 am

John, here I think is the page showing that valve and the PT # from FT. It does google to a Haldex part and there are a few types of them but this one is at bottom of the google found part. Use Haldex site. part # N-15759-DG
John

Re: Travel Mode issues Update

Reply #7 – December 11, 2016, 08:01:35 am

Quote from: John Haygarth – December 11, 2016, 12:57:27 am

John, here I think is the page showing that valve and the PT # from FT.

JohnH,

Where did you find that parts list and photo? Looks like a handy reference document. Source?

Re: Travel Mode issues Update

Reply #8 – December 11, 2016, 08:21:40 am

JohnH,
I appreciate the help, but you don't need to go under your coach in the snow. I am in Florida on a concrete slab with 80 degree weather. I'll go under my coach and see what I have and take a picture.
Thank you so much for your help,
John M.

Re: Travel Mode issues Update

Reply #9 – December 11, 2016, 09:09:34 am

Quote from: John Haygarth – December 11, 2016, 12:57:27 am

John, here I think is the page showing that valve and the PT # from FT. It does google to a Haldex part and there are a few types of them but this one is at bottom of the google found part. Use Haldex site. part # N-15759-DG
John.

Below is a Haldex Bulletin with superceeding part numbers for the above part number series
http://www.haldex.com/globalassets/north-america/documents/suspension-controls/l55297w

A potential source (usual disclaimer, no commercial interest on my part)
HALDEX PRESSURE PROTECTION VALVE 65 PSI 90555396

hth

Re: Travel Mode issues Update

Reply #10 – December 12, 2016, 11:51:30 am

I was able to go under the coach today after I made the coach safe to go under. I was not able to go under yesterday due to the rain all day. I was able to take a couple of pictures of the valve. It seems to be a Meritor WABCO 9348990060. On the body of the valve it had stamped on it N157590G. I found the Meritor guide and could not find my valve (attached). I can't seem to find a replacement or a cross reference anywhere on the internet. I don't know the open and close pressures of the valve which would be helpful to find a replacement. I might have to wait till I get home to remove it and take it apart and clean it or take it to a truck repair parts department and have them search.
Any help would be appreciated.
Thanks, John M

Re: Travel Mode issues Update

Reply #11 – December 12, 2016, 12:17:01 pm

yes I did some searching but could not find the exact same # on their cross listing #s but on ebay they have this one which looks the same, maybe pressure setting is different ( I think it should be around 60lbs???
9348990040 Meritor Protection Valve KU31000 | eBay
I think if you take it apart and find some issue with it and fix it you can get by while sourcing another--just in case!!

JohnH

Re: Travel Mode issues Update

Reply #12 – December 12, 2016, 12:22:37 pm

I called FOT Parts and they said they have them in stock $49.18. The number he gave me is Meritor R90555396. Now trying to find the part.

Thanks, John M

Re: Travel Mode issues Update

Reply #13 – December 12, 2016, 12:31:47 pm

Mertior Wabco R90555396 Pressure Protection Valve | eBay

If that is it then it is $20 on ebay
JohnH

Re: Travel Mode issues Update

Reply #14 – December 12, 2016, 12:41:45 pm

I called the local NAPA Auto Parts and they will have one ready for me in the morning, $30.29
JohnM

Re: Travel Mode issues Update

Reply #15 – December 12, 2016, 12:44:59 pm

JohnH,
Yes I seen that one on EBAY. It looked used and didn't want to take my chances. I found one at NAPA for $30.29. Thank you so much for your help and efforts, John M.

Re: Travel Mode issues Update

Reply #16 – December 12, 2016, 12:45:23 pm

Try a big truck parts store.
It may be a common truck part.

Re: Travel Mode issues Update

Reply #17 – December 12, 2016, 01:05:08 pm

It does say NEW but if you can get it from NAPA for $30 I would go that way then at least you have it and can return if necessary.
JohnH

Re: Travel Mode issues Update

Reply #18 – December 12, 2016, 03:22:09 pm

Quote from: John Morales – December 12, 2016, 12:44:59 pm

JohnH,
Yes I seen that one on EBAY. It looked used and didn't want to take my chances. I found one at NAPA for $30.29. Thank you so much for your help and efforts, John M.

Looks like a really rough casting. NAPA is great for big truck stuff, even in the backwoods.

Re: Travel Mode issues Update

Reply #19 – December 12, 2016, 03:46:46 pm

T-man, yes great emblem isn't it!. Amazing the things they make to manufacturers specs and save us money to boot. Just think if everything was made in Canada or US we most probably could not afford them

JohnH

Re: Travel Mode issues Update

Reply #20 – December 12, 2016, 07:15:37 pm

I want to thank everyone for the big help in finding the Pressure Protection Valve. You all have big great and I'm so grateful for the resource of this forum.

John M.

Re: Travel Mode issues Update

Reply #21 – December 28, 2016, 02:08:26 pm

When I initially encountered the problem I was at a rally at Vero Beach, FL. We came home after a week and the day after we arrived we took off to Marco Island for the holiday. I am just getting to replacing my pressure protection valve. Attached is a photo of the assembly. The two way check valve was loose at the joint marked. In the next picture I took the valve apart and foung moisture corrosion. Hopefully I will be able to clean it and save it as a spare. The last picture is the new PPV by Haldex. I have a question, in the Haldex installation instructions it states to use a drop of Loctite to lubricate the threads. It clearly states not to use pipe compound or teflon tape. I initially was going to use the brush on teflon pipe joint compound to install. Does Loctite make a special thread lubricant or are the talking about the red or blue Loctite?

Thanks in advance, John M.

Re: Travel Mode issues Update

Reply #22 – December 28, 2016, 02:21:05 pm

Odd that the instructions don't specify a particular product... Loctite makes many thread sealants, thread lockers of different strengths, etc. Many of which would act as a lubricant during installation. My rule of thumb is, that if it seals on the threads (as opposed to a compression type fitting), then I use a thread sealant. For the coaches air system, I use Loctite 567 carefully applied so as not to risk getting into the valve or into the system. I would be reluctant to use a thread locker in that application, especially if it is pipe thread. Also, I am careful when positioning the fitting or valve so as not to have to back it off to position correctly. Just my two cents...
Don

Re: Travel Mode issues Update

Reply #23 – December 28, 2016, 04:07:59 pm

And mine (2 cents) is that the reason they say not to use a brush on type sealant is that most people put a lot on AND at the beginning of the threads. I use it sparingly and put it about 1/8th inch from the end so none goes into port.
By the way, looking at that "corrosion" I would bet that it is desiccant from your air dryer. Have a look in the pipe fittings and see if it looks the same.
JohnH

Re: Travel Mode issues Update

Reply #24 – December 28, 2016, 04:20:35 pm

John,
Didn't they do away with pennies in Canada?

No worries, your two cents on anything relating to these coaches is worth at least a quarter

Don

Quote from: John Haygarth – December 28, 2016, 04:07:59 pm

And mine (2 cents)...
JohnH

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