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Burkert valve & Stepslide
I have a Burkert valve in the aux air system that started leaking. I removed the valve, opened it up, did as bit of cleaning & reinstalled just to see. It did good for 1 cycle session but I let the air out of the aux system to work on driver seat. Upon refilling the system the Burkert valve began leaking again out of the discharge screen. Is there a source for the Burkert valve?
As to the floor slide you can hear the electrical switches engaging but no movement. I am replacing the carpet in the front of the salon & the floor section above the slide is exposed currently. Should I access the slide from the top or from below? Also the slide is not movable by hand pulling.
By the way is there a aux air tank & if so where might I find it?
Thanks in advance.
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11 Replies
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Piston seal/ring on the air cylinder could be leaking past, this will also cause air to leak from discharg, can check this by opening the floor slide then removing line to open side of cylinder, if piston seal is leaking there will be air coming out of line.
Glenn
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Glenn,
Do you open the floor slide from the top by removing the floor?
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John
I was wrong in my saying of how to determine if piston seal/ring is bad and letting air leak by/across piston. try again have the floor slide open and at the control valve for floor slide remove/open the line that goes to the close side of cylinder and if air is returning from this line then it is leaking past the piston.
I took the easy way out. read didn’t want to expend the work and time to get to the cylinder. and installed an electric controlled valve that is normally closed ahead of the slide control valve with power to the valve at key on. this shuts off air to slide valve when key is off. and I don’t remember where I bought the valve any place that sells pnuematic controls will have one. be sure if you go this way to match valve voltage to source voltage
If I am not making this understandable please feel free to call me and maybe I can explain better, being an old hydraulic/air repairman helped me, and motor coach services told me what to do
cheers
Glenn 806-828-4138
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Did you happen to see the posting about replacing a Burkert valve replaced with a Norgren valve? It might be of some interest if a replacement Burkert valve is difficult to source.
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Yes I replaced that Burkett valve with Norgren, Found out the Norgren valve #K910026 has 4 ports It can be (NO normally open) or (NC normally closed) just by connecting ports differently. The same Norgren #K910026 is used inside frame above tag to do 2 different things 1 is NO & other is NC so that valve could be used in different applications.
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Thanx guys. I do have an extra Norgren valve. I will check it. Maybe I’ll get lucky with it being the right one.
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Update:
Stepslide is now operational. Don’t always believe the regulator gage reading. Had a little fun with my wife. Got her to stand at the door listening for any leaks in air. Popped that slide & enjoyed the reaction…
Pulled the house batteries on the side of the coach to get to the valve. Unhooked all lines to valve. Started the aux compressor to check air flow. Hooked that line back to valve. Air discharging from dump screen. Shut down aux air. Started bus to see how the bus air does with the valve. Much higher volume & pressure. Shut down engine. Hooked all lines back up to Burkhert valve. Started engine again to build pressure & no discharge of air from valve this time. Shut down engine. Started aux air compressor & no discharge of air from valve. All is working good. Ran this procedure several times with no failures.
Hopefully final notes for now:
The aux air compressor does not produce enough volume to actuate the valve properly but will hold after valve has been actuated with main air. Been holding with an occasional aux compressor cycle on for over 6 hours.
1999 XLV X-6872, liberty #440 -
John , Crazy how 2 Vantares seem to share a step slide issue . Mine differs in that I can close the slide with air but can not open it no mater how many times I tap the button. Any thoughts you might share ” Now that your our Vantare Step slide Master ” Well at least to me you are John 🙂
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Al,
It was interesting how the slide just started working. I cranked up the regulator & all of a sudden the slide popped open. I heard it from the outside so was surprised when I checked to see what happened. Previous to that I could not open it by hand pull but now I can. All this to say that I’m wondering if your air pressure is high enough. Once I worked it a few times it slid easier. Just a thought. Here’s to safe travels for You Al.
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This is just a general observation about pneumatics relating to unexplained issues.
Often the best thing we can do is exercise the various systems. If we have the slightest amount of moisture for example it has the ability to create a drag on valves or other moving parts. Our systems may be bone dry now, but if at some point there was moisture it can corrode sensitive materials like aluminum, and that slight surface corrosion can slow or prevent valve operation.
Exercising the systems keeps them functional and if the air dryers have been maintained moisture eventually is purged but the slight tendency for things to drag or not move still exists. This is especially true of the level low system if the coach has been sitting for a long time.
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al is there any kind of regulator on the two line going to the step pistion. I know mine a small knobs that I can adjust to regulate how fast the slide opens or closes. I you do might adjust the open knob so you get a little more air.
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