Travel Mode / Ride Height Problem

Topic: Travel Mode / Ride Height Problem (Read 2578 times) previous topic - next topic

Travel Mode / Ride Height Problem

June 19, 2020, 05:10:26 pm

Coach has been sitting a while [unnecessary comment removed - moderator Michelle]...fired it up for a jaunt to a local COE lake and it did't want to go to proper ride height, panel light says it went to travel mode but the front was high and it listed to starboard.

I leveled it manually to proper height and drove to the lake, only a 40 minute drive. It held ride height ok and leveled itself on the pad ok, but after my stay when time to depart, refused again to attain travel mode properly, this time going to low in rear, high in front, and leaning starboard....all the time telling me it was in travel mode.

The leveling valves haven't been messed with, six pack valves operate ok manually, just don't want to go even close to proper ride height....what's going on here??

Unplugged the wiring from back of the control pad a couple of times to no avail...manually set it up, drove home, and now sitting here scratching my head.

Re: Travel Mode / Ride Height Problem

Reply #1 – June 19, 2020, 05:33:05 pm

With Coach running and in travel mode I would manually check to see if the right rear ride height valve is working properly.

Re: Travel Mode / Ride Height Problem

Reply #2 – June 19, 2020, 05:38:23 pm

Ralf,

First off the travel light on your year coach only tells you that you have air pressure up.

Pull the cover off you HWH control box (located in the basement) and see if you have a bad fuse that controls the rear travel solenoids. You will also need to check the fuse that feeds the front travel solenoids. If both are good then look at the coils on the on the travel solenoids located on the 6 packs to see if you have a couple of bad coils. This is what sends air to the ride height valves. As above double check the setting on your ride height valves.

Mike

Re: Travel Mode / Ride Height Problem

Reply #3 – June 19, 2020, 06:42:58 pm

I have had instances where, after our coach sat for a extended period, it would not go to proper ride height on one corner or another. I found by "exercising" the system, the recalcitrant solenoids would start working properly, and everything went back to normal.

By "exercising" I mean I would use the RAISE button to raise the coach fully up to the stops, then with the DUMP button drop the coach fully down on the stops. Do this 2 or 3 times so all the solenoids have been multi-cycled, then see if system will come back to ride height.

Additional benefits of running through the exercise I describe:
1. Cycles the ride height valves through their full range of motion (beneficial if they are getting sticky).
2. Checks for good communication between the control panel and both 6-packs.

You might give it a try and see what happens.

Re: Travel Mode / Ride Height Problem

Reply #4 – June 19, 2020, 06:50:42 pm

Last time I took the coach out for a ride I had to manually lower it and then later on the drive I stopped to check and it was low.
So I manually lifted it a bit. I haven't had time to check anything out so I hope you find out what it is. Chuck I will try what you said.

Re: Travel Mode / Ride Height Problem

Reply #5 – June 19, 2020, 07:14:24 pm

Check the ride heights valve adjustable arm. May have slipped in its setting

Re: Travel Mode / Ride Height Problem

Reply #6 – June 19, 2020, 07:48:28 pm

Check voltage.. Maybe a reset (batteries) and it will quit thinking on its own?

Re: Travel Mode / Ride Height Problem

Reply #7 – June 19, 2020, 08:03:27 pm

It seems to me that if you can manually adjust air bags and they hold in that position while your drive, maybe HWH may not know ignition is on.

HWH has great diagnostic documents, that may help figure it out.

Re: Travel Mode / Ride Height Problem

Reply #8 – June 19, 2020, 08:25:24 pm

Remove / replace cable on back of HWH dash panel.

Re: Travel Mode / Ride Height Problem

Reply #9 – June 20, 2020, 08:21:54 am

Good suggestions....I'm thinking it's got to be either a travel coil / solenoid or a leveling valve. Seems with the travel light on, power should be being sent to the travel solenoids, and if they are opening the air should then be controlled by the leveling valves. Won't have a chance to check all this out until next week. Of course I'll check the travel fuse and a possible slipped linkage rod...check the easy stuff first, huh?

Re: Travel Mode / Ride Height Problem

Reply #10 – June 20, 2020, 02:21:38 pm

Ralph,
Try going into travel mode and use a broomstick like a pool cue to tap the travel solenoid on the low side. See if anything happens.
JD

Re: Travel Mode / Ride Height Problem

Reply #11 – June 20, 2020, 04:36:00 pm

Quote from: Ralph – June 20, 2020, 08:21:54 am

Good suggestions....I'm thinking it's got to be either a travel coil / solenoid or a leveling valve. Seems with the travel light on, power should be being sent to the travel solenoids, and if they are opening the air should then be controlled by the leveling valves. Won't have a chance to check all this out until next week. Of course I'll check the travel fuse and a possible slipped linkage rod...check the easy stuff first, huh?

I would be extremely careful, both Bruce Bean and I cracked windshields over this happening.

Mine bottomed out on ruff road. Instant crack from top to bottom RF windshield at curve." POP" is all I heard

I believe Bruce's happened when it went up lopsided on RF over a bad solenoid.

Just my 2 cents
Chris

Re: Travel Mode / Ride Height Problem

Reply #12 – June 21, 2020, 08:30:42 pm

I started the rig today and it won't go down on it's own. I have had the bags fully extended for a few weeks and it is still off the blocks.
All the lights were lit up on the panel. I will start to look at it tomorrow.

Re: Travel Mode / Ride Height Problem

Reply #13 – June 21, 2020, 08:48:07 pm

Key on, parking brake on, HWH system off, check that fuse #11 is good in the control box in basement...it should then energize the travel solenoids and dump the air through the leveling valves

Re: Travel Mode / Ride Height Problem

Reply #14 – June 22, 2020, 12:40:10 pm

When I was at foreravel of Texas for the ladies drivers class our travel solenoid went out. They had to replace two of them. So it might just be a bad solenoid. But all the other suggestions as far as checking fuses and cycling through the ups and down sounds like a good plan as well.

Re: Travel Mode / Ride Height Problem

Reply #15 – June 22, 2020, 03:00:58 pm

Try the pool cue tap. If it's stuck it might get you going.

Re: Travel Mode / Ride Height Problem

Reply #16 – June 22, 2020, 04:28:22 pm

That happened to me a while back. The back would not come up to clear the Travel Mode. I had a stuck Pressure Protection Valve. It should be on the tank in front between the tank and the air line. Sometimes you can break them loose by tapping on it. You can pick up a new one at NAPA pretty cheap.
John M.

Re: Travel Mode / Ride Height Problem

Reply #17 – June 22, 2020, 10:15:11 pm

I look at it again this afternoon. If I push the dump valve it will go down and if I push the raise button it will go up. but it will not
go down into travel height. I banged on solenoids. In the basement I found a reset able braker but no fuse. The whole coach is
not going up or down in travel mode.

Re: Travel Mode / Ride Height Problem

Reply #18 – June 22, 2020, 11:00:56 pm

Quote from: oldguy – June 22, 2020, 10:15:11 pm

In the basement I found a reset able braker but no fuse. The whole coach is not going up or down in travel mode.

See HWH 600 Series Service Manual. Pg.14, Repair Steps, Part 7 (link below)

https://www.hwhcorp.com/ml19048.pdf

Re: Travel Mode / Ride Height Problem

Reply #19 – June 23, 2020, 07:05:05 am

Quote from: oldguy – June 21, 2020, 08:30:42 pm

All the lights were lit up on the panel.

Sometimes this indicates there is a problem with the microprocessor or a failed solder joint in the same area.

Mike

Re: Travel Mode / Ride Height Problem

Reply #20 – June 23, 2020, 10:35:15 am

Were is the control box.

Re: Travel Mode / Ride Height Problem

Reply #21 – June 23, 2020, 10:38:23 am

Should be mounted on the ceiling of the basement behind the HWH compressor if you don't have a slide. It is a 10" square aluminum box about 3" thick.

Mike

Re: Travel Mode / Ride Height Problem

Reply #22 – June 23, 2020, 10:43:06 am

I saw it but didn't know what it was. It's right beside my ABS box.

Re: Travel Mode / Ride Height Problem

Reply #23 – June 23, 2020, 10:48:05 am

Quote from: oldguy – June 23, 2020, 10:43:06 am

It's right beside my ABS box.

That is it. There should be 4 Philips head screws that you can take off and the cover will come off to revel the fuses and PC board.

Mike

Re: Travel Mode / Ride Height Problem

Reply #24 – June 23, 2020, 10:52:55 am

That is correct. I helped a friend with a similar problem to yours. We had to send the control board in for repairs. The repair was cheap, the problem was getting a return call and if I am not mistaken you have to have a number from them to send it in.
They are very hopeful, just under staffed in my opinion.

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