-
Three Port Norgrens
Can anyone tell me if there would be a reason for this configuration of fittings for these 3 Port Norgrens in my driver bay? Just because that is what they had to work with at the time or another reason for using the copper pipe? The left Norgren has failed and I have a left rear lean. Thinking of replacing both and keeping the working one for a spare.
-
14 Replies
-
Liberty auto level.
-
Raise the rear of your coach manually. Stand outside next to the driver’s seat and with the engine off, key on and the leveling system switches set to manual, left and right rear raise, change the rear switches to down.
You should hear the air escape from those Norgrens. If you alternate which switch you select, left or right you will hear air escape from one or the other. Remember which is for the left or right rear because if you have to trouble shoot leans in the rear that may be a part of the process.
-
Sorry guys, I guess I wasn’t clear in my question. The problem is definitely in the left level low valve as it leaks profusely out the exhaust port after the key is off. I have the bus down on the stops just to be reasonably level.
My real question was about the compression fittings used and their configuration. Is there some need for the short sections of copper/brass pipe and the brass blocks that are used or were they just what was available when these valves may have been replaced by someone before I bought the coach?
Thanks for the replies!
1999 XLV X-6872, liberty #440 -
Looks like a totally normal auto level Liberty setup to me.
Mine are 12v coils. Your results may vary. -
Thanks Don.
I guess mine is the original setup. Looks pretty much the same other than my coils being 24v.
Any idea why Liberty would have used the short length of brass tube and solid brass Ts and elbows? I guess it may have been SOP in 2001.
-
AHA! I never use my auto-level…not sure if it works. I’ve been fighting a right rear leak for about a year. Sometimes it’s fast (8-12 hours), sometimes slow (1-2 days).
What would be involved in simply eliminating auto level?
-
Don’t put the switch in the auto position.
If you use the road and manual position your system is being used like a stock level low system, but unfortunately you have extra valves and associated changes that have allowed Liberty to add the automatic feature.
Other converters that wanted auto leveling often used an HWH system on top of the Prevost Level Low.
-
Jim,
FWIW , I chased a leak just like you have on my liberty. It ended up being a bad norgren on the rear bulkhead that leaked internal and was coming out the 3 port in the drivers bay that liberty placed. I changed that valve out twice in the drivers bay thinking I had a bad valve.
-
I think what Rocky is talking about is in the rear on the bulkhead just fwd of the drive axle, there are two, a left and a right, Norgren 5 port/3 way spool valves, Prevost # K910058 = Norgren# K81EA00KACKAC
Jeff and Lindsay
91 Marathon XL -
I think the pipe extensions are just to have room to connect up the air lines. The air coming out of the exhaust port could be caused by one of the other valves being bad.
Jack
-
I don’t like auto level, I had HWH air leveling on a Foretravel U320 I use to own and they always go to high, When we bought the Prevost with the Prevost level, I thought it was a down grade from the HWH, I was wrong! I really like the stock Prevost leveling system, It’s simple, works well Less to go wrong.
-
JON: I think you misunderstood…or you’re making fun of me! I can take it!
I don’t use the auto level and I don’t put the switch in the auto position. My concern is the possibility that air from the right rear suspension could be escaping from something in the liberty auto level system when the switch is in the locked position and the coach is stationary. I’m sure that’s not supposed to happen, but I’m wondering if it could be possible with a malfunction and, if so, it might be easier for me to remove the entire system since I don’t use anyway.
-
Not making fun at all. The only thing the Liberty auto level system does for you is actuate the same valves you would manually. As soon as the key is off the Norgrens that direct the air flow through the ride height valves or the valves that function manually or automatically go to their neutral position and lock air in the air bags.
The automatic system is just an electronic way of doing what you do manually, and Liberty just slightly modified the level low system and added two valves to make that happen.
If the key is off and you get the leans the problem is exclusively associated with air bags, the Norgrens, the fittings or the hoses, from the air bag back to the Norgren 5 port valves in the case of the rear. If the 5 port Norgen valve in the rear leaks, the leak on a Liberty may possibly be detected at the solenoid operated 3 port valves in the steer comparment. The 5 ports can leak in other ways, such as out past the spool on the ends so it sometimes takes a little detective work to isolate the leak.
-
Rocky & Jack,
As they say in the State Farm commercial, “that’s wonderful news”. Thanks for the info. I have the front valve, so I’ll try it and hope that’s it for now.
Being a full timer makes it difficult to get the bus up and supported enough to go crawling around underneath. If the front valve is OK, I guess Jeff will get an opportunity to fix it next stop. Which will be soon.
Jim
Log in to reply.