Problem with Ryko Soft Gloss

[slash007]

On my Soft Gloss, the rear arms are not closing to wash the back of the vehicle like they are supposed to. I had that problem before and replaced a mac valve to fix the issue, but I can't remember which one it was. Anyone know which mac valve I need to replace? One arm goes in about half way towards the car and the other barely moves in. When working properly, both arms close all the way and scrub the rear of the vehicle.

Thanks.

 

[DiamondWash]

Here's a picture of what you need also it is the rear air in valve.

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[slash007]

I appreciate the picture. I am having a heck of a time with it. I first replaced rear trail in before finding out that rear air in was the mac valve that controlled the arms, so I then replaced the rear air in valve and the arms started closing but are not closing tight like they should. They barely touch. I spoke to Ryko and was told that rear high air gives them the extra push so that they close tighter, so I replaced that valve but it didn't make a difference. I did verify that my air pressure is where it should be, so I have no idea what the issue is. Anything else that I can try or check? Thanks.

 

[slash007]

I just realized that I keep getting error code 17 on the display which has to do with the prox for the arms it seems. What would cause that error?

 

[Ryko CS]

Each arm has a prox. When an arm is in the full "out" position, the proxes should be off. As the arm sweeps inward, the prox should turn "ON", and as they close to center, the prox should again go "OFF". Code 17 indicates that an arm prox isn't turning on when expected. best way to determine which one would be to look at the 4 digit diagnostics if you have them available. 8813 is Rt Front, 8814 is right rear, 8815 is left front and 8816 is left rear. If the arms can't move in, that would cause this code.

For the arms not coming in, trailing air refers to the direction of travel when those arms are not leading. In other words, when machine is travelling rear to front, rear trailing air is what controls them. When the machine is travelling front to rear, it is "rear air" that controls them. Depending on how the machine is setup, high rear air can also come into play, but usually "rear air" should be enough to bring them in. If you believe that valve is functioning properly, try dropping the air off the machine, and move the arms in/out. Is there any binding? Are the arms level? Are the pivot pins in the air cylinder loose? Are any of the air lines going to the rear arms pinched? Anything that could mechanically restrict the movement can be contributing.

 

[slash007]

Thanks for the reply and for explaining error 17. I had been switching mac valves back and forth as I started doubting whether I had put in a new one, so I ended up putting new valves for both rear air and rear high air. Most times after switching a mac valve the rear arms will close for a few cars and then quit. They seem to swing freely with no air. I will check the other items you mentioned.

 

[Ryko CS]

If they are working for a few cars and quit, please also verify that you are getting 24V to the coil of the valves. I'd also recommend you drain the moisture from the compressor as that can also cause issues.

 

[slash007]

I will check that out. Sometimes I would change a mac valve and they wouldn't work, other times I would put in a valve that I thought was bad and they would. That made me doubt the mac valves and whether I had confused a new valve with and old one, so I purchased two valves and labeled them to make sure they were new. I will double check all of the connections and drain the tank. Thanks again.