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How to access air lock?
So I was exiting the coach today and it was rather quite for a change. As I was stepping down and my ear passed the air lock, I heard the tell tale sound of an air leak 🙁
Took the chrome dress plate off and sure enough, there is an air leak on the air lock. From what I can tell there is an air piston that when air is applied, pushed out the piston and locks the door. problem is I can’t seem to find out how to get in there to check if it’s the fitting or the piston?
There is a pocket door (next to the passanger seat) above the lock mechanism, but the bottom of the storage area doesnt have any screws to take the panel out.
Anyone know how to access the air piston for the lock without taking that entire surround out?
THis would again be on a 1998 Liberty Classic.
Thanks,
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6 Replies
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there will be access to it from inside beside the passenger seat there is some fittings in there plus a bimba valve with a rod that pushes the lock closed or open they can leak also ( the Bimba Valve) about 2000 dollars for the valve from Prevost
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Peter,
I was expecting an access panel (as there is wiring, HVAC and air lines back there. But nothing? There is the door with the small storage area. Pulled the carpet from that to see if the bottom panel of the storage area was removable. There are no screws to remove it?
Here is what I am looking at:
and
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If there is a lid and things in it take out screws or there maybe a little leather covered cover towards back of cabinet it will come out some how keep looking it will be screwed to wall some how it was put in by man so man can take it out , it’s like a puzzle , I need more pics to tell you how but it will come out with out force somehow!!!!!! The hole cabinet comes off the wall some how then you can get to it, the Bimba valve and fittings, I have replaced about 14 off those on different coaches
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That’s what I was thinking in terms of the bottom of the storage area lifting out. Nothing. Looking closer, it looks like the panels are all glued in. Nothing on the back where it lines up with the couch on that side either?
Am thinking the entire assembly needs to come out. Not cool when you have stuff in there that needs to be serviced.
Will give Jeff a call and see what he thinks about this and has a better way to access the area. Worst case I find the line that feeds the air lock in the steering bay and put a shut-off valve inline and shut the air to the piston off.
Ye, I replaced the grey/black pistons already. Rather expensive and those look to be longer. On thing that I questions was how the black water dump valve is setup. No option to override air like the grey has. Should have designed it so you can override the air. Especially since in order to open both these valves you need to apply air which leaves the solenoid charged and that heats up after a while. Don’t really like the amount of heat they generate while holding the valves open for a long period of time.
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quick question on the air lock…
Is this a prevost chassis item or a convertor item?
Getting to the poston is a little more complex the expected so thinking I will install a shut off valve in the steering area on the line that feeds the air lock. This way I can turn it off when I dont need it (sitting for a while) and turn it on when I like to use it (when I am driving to help create a better seal from the wind). Then I can replace the actual leaky piston when I get back to the east coast next fall and Jeff’s guy’s can take it apart properly.
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It’s a Prevost part
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