Travel Height Norgren Coil - 5 Port - Steering Bay

[truk4u]

Jon has covered this a gazzilion times, but when it happens to you, the more information the better.

Got home from OKC and the bus would not come back up to ride height after lowering to unload. I had to use the manual position and level up the bus to get it in the garage.

This is a simple fix, if you have the parts and can be easily diagnosed by just swapping out the center position valve (right height) with one of the other valves to determine if the coil is the problem. Another easy way is to put 24 volts to the coil and see if it magnetizes. This is a 30.00 part and I now carry a spare coil and valve with "O" rings.

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Coil Part #641929 - 30.89

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Valve and Coil

[JIM KELLER]

Good post, Tom.

[Jon Wehrenberg]

This is not a common problem considering the number of coaches in POG and the number of miles driven, but a solenoid valve and coil failure is not an unheard of problem.

AJ had a similar problem and fortunately he was where he could get a replacement part.

If you should experience an inability to restore the coach to ride height there is an easy fix so do not be tempted to drive with the coach raised up or dropped down.

All the solenoid valves that control the suspension system are stacked on a manifold located on the rear bulkhead in the lower compartment beneath the driver's seat. On coaches with five solenoids the center solenoid is the ride height control valve. It is continuously open (and the coil powered ) any time the ignition key is on and the coach suspension control in the drive or road position. Should it fail to function as Tom's did, to make a temporary repair to get you moving swap coils with any other coil, or swap the entire solenoid valve.

On older coaches with the 4 valve manifold I do not know which solenoid valve and coil is for the ride or drive position, but it can be easily determined by seeing which one has 24V power coming into it when the key is on and the ride or drive position has been selected.

[JIM CHALOUPKA]

Jon, does this tip pertain to Country Coach?

JIM

[Jon Wehrenberg]

Jim, you are not making friends with posts like that. Yes, it pertains to all coaches with our type level low suspension.

Some coaches have the HWH system (and I am shooting from the lip), but I think the HWH sends its ride position electrical commands through the same solenoid array.

[JIM CHALOUPKA]

Whoops, I didn't mean it that way.

JIM

[dale farley]

Based on comments in this thread, I am wondering if my bus goes to ride height when I start it and let it run a few minutes without putting it in "Drive"? I notice mine always exhausts after running for a couple minutes whether I place it in gear or not. I always assumed when it exhausted, it was "road ready". Am I right or wrong in that assumption?

Yesterday, when I started to back out of the garage (before I placed it in gear), when it exhaused it had raised to a little over 12" just in front of my front wheels. Measuring from the bottom of the stainless to the concrete.

[MangoMike]

More info over at www.Prevoman.com

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http://www.prevoman.com/Pages/Manifold/Manifoldpg1.html

Mike

[Willis Michell]

I have a new coach (new to me) 1999 Vantara. I dont think it was used much before I bought it and I am having the same trouble. Could it be their is to much condensation in the air lines? I understand you should bleed condensation out once a month or so? W

[Jon Wehrenberg]

Willis........

As a newbie the first thing you need to do is try to learn the controls of your leveling system. I am not being a smart ass, but I am trying to get you to be able to define how your system is set up. As you may surmise by reading this thread the system controls are different depending not only on who the converter was, but how the cocah was equipped. What is reasonably constant is the underlying valve operation although some converters varied that as well.

To answer your question first tell us about your leveling system, or better yet attach photos of the leveling system controls.

Then it is probable that someone on this forum can walk you through the operation of the system, and from that you can report back and tell us what happens or does not happen, compared to what was expected to happen.

Condensation in the system is not unreasonable especially if the air system on the coach was poorly maintained, but apart from hydraulic lock it should not prevent the system from functioning.

Help us help you by posting pictures of your controls, or at the very least describing them.

You may find that on occasion we sometimes actually answer questions correctly.