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Topic: Step won’t shut till 10 minutes down the road (Read 2050 times) previous topic - next topic

Re: Step won’t shut till 10 minutes down the road

Reply #40 –
Do have 12v valve and checked and do have 12v at the plug in to the coil on the valve.

My job is getting in the way this morning so will look for ground later

Re: Step won’t shut till 10 minutes down the road

Reply #41 –
For lubricating WD40 is NOT good for that, people think that it is for some reason.. the WD stands fro Water Displacer. Use what Rudy mentioned above or if you want the convenience of having it in a can ready to go Aerokroil and CorrosionX along with PB Blaster are good choices to help free stuck parts.


Keith

Re: Step won’t shut till 10 minutes down the road

Reply #42 –
Quote from: Tommy D –
I did follow the air line position # for #.

What do you mean by "do you have the 12v DC coil"?
If you mean the plug they supplied I will check that out. Sorry not too fluent in electrical or mechanical lingo.

You will be fluent, you will be.

Two things about the coil that makes the valve work.
The most important is never apply power to the coil when it is off the solenoid.  If you do the coil will burn out.  The solenoid is the piece of metal that moves inside the coil.  In this case the stem on the end of the valve.

The other one is that coils are meant to be exchanged so the valve can be operated with several voltages and AC or DC electricity.

Re: Step won’t shut till 10 minutes down the road

Reply #43 –
If it's a new valve I would suggest not putting any lubricant in it.
If you must, the best is a oil approved for pneumatic tools.

Re: Step won’t shut till 10 minutes down the road

Reply #44 –
Quote from: FourTravelers –
If it's a new valve I would suggest not putting any lubricant in it.
If you must, the best is a oil approved for pneumatic tools.
Adding a lubricant is counter productive.  If a lubricant is necessary it would have been added at the time of manufacture.  Adding oil now only washes out the lubricant.  These valves are meant to be used with dry clean air.

Re: Step won’t shut till 10 minutes down the road

Reply #45 –
Haven't seen one post about verifying the air pressure with another gauge.

Re: Step won’t shut till 10 minutes down the road

Reply #46 –
Quote from: John44 –
Haven't seen one post about verifying the air pressure with another gauge.
Haven't tried verifying. But if I switch airlines on the output side the step does close. Problem is  cant get the solenoid to change Air to the other output line through the solenoid. At least the way I understand that it is supposed to work.

Re: Step won’t shut till 10 minutes down the road

Reply #47 –
Quote from: hdff –
For lubricating WD40 is NOT good for that, people think that it is for some reason.. the WD stands fro Water Displacer. Use what Rudy mentioned above or if you want the convenience of having it in a can ready to go Aerokroil and CorrosionX along with PB Blaster are good choices to help free stuck parts.


Keith

Thanks for the heads up, I haven't applied any wd40 to the new valve.

Re: Step won’t shut till 10 minutes down the road

Reply #48 –
Quote from: FourTravelers –
how much pressure is showing on the regulator?

If you have about 60 psi then turn the regulator down to "0"  and remove the air lines from the valve to the cylinders, turn regulator back up to about 60 psi and you should have air escaping on the N.C. port. Try actuating the valve again with your door or magnet and see if the air switches from the N.C. port to the N.O. port. If not then the valve is stuck or has an obstruction. If it does and you have plenty of air flow on the N.O. port, try connecting just the N.O. port back up (this port should retract the step) and check for "blow by" through the cylinders.

Disclaimer........... I have a U280 GV and this worked on mine......... yours may be different.

Good Luck!

I have been doing the testing as described above at low psi. Do I need to turn it up to 60psi to get the solenoid to work?  Have only been turning it up until I hear air coming out of the bottom port.  So in other word does the air regular  need to be at or close to 60psi to make the valve switch from bottom port to top port?? Or does the valve switch with the 12v applied by closing the door?

Re: Step won’t shut till 10 minutes down the road

Reply #49 –
I have one in the shop, will test it shortly.

without air the valve doesn't move on mine

Re: Step won’t shut till 10 minutes down the road

Reply #50 –
Quote from: Tommy D –
Haven't tried verifying. But if I switch airlines on the output side the step does close. Problem is  cant get the solenoid to change Air to the other output line through the solenoid. At least the way I understand that it is supposed to work.
Maybe they are connected to the wrong ports? I think I had some old pics of mine in the forum with the connections shown. Not sure.. Hate Gremlins

Get the pressure set at 60psi so that will be off the list

Re: Step won’t shut till 10 minutes down the road

Reply #51 –
Quote from: Tommy D –
I have been doing the testing as described above at low psi. Do I need to turn it up to 60psi to get the solenoid to work? 

Yes.  The valve is a pilot operated device so the solenoid valve switches a small valve the provides the air to operate the large valve.

If you're going to shoot yourself in the foot, film it and put it on you tube.

Grins.

Re: Step won’t shut till 10 minutes down the road

Reply #52 –
maybe your gauge is stuck at 60 psi but you are not getting 60 psi? maybe after you bounce around it opens to allow the pressure to move the step? .. maybe a one way valve (if any) from the tank or manifold (not sure where the air line originates) is Wonky?

Re: Step won’t shut till 10 minutes down the road

Reply #53 –
If it is an "air piloted valve" it my need over 25 psi to activate. We have some
MAC valves here at work that are that way.
I would hook up the lines to the new valve and turn the pressure up to 60 and see if it works.
 

Re: Step won’t shut till 10 minutes down the road

Reply #55 –
Quote from: FourTravelers –
If it is an "air piloted valve" it my need over 25 psi to activate. We have some
MAC valves here at work that are that way.
I would hook up the lines to the new valve and turn the pressure up to 60 and see if it works.

As usual with me it is operator error. Not sure what PSI triggers the valve/solenoid but when I got the air pressure up to 60psi the step worked like a charm. Thanks for all your help!  Be patient, I'm getting there. I'm certainly not as green as I was yesterday 😳😳😳

Thanks for all who contributed!  I certainly couldn't do it with out you guys!