| Author | Message | ||
| Gerald Norman (Gnorman46)
Registered Member Username: Gnorman46 Post Number: 11 Registered: 12-2006 Posted From: 68.241.202.117 Rating: N/A |
I just went out to my bus to prepare it to be towed home Tuesday and I aired up the system with an air compressor, the right side bags came up very well but the left was slow in response. Once all were up and level I could hear a leak in the compartment under the drivers area but could not find it, it seemed to be coming from behind the tank there and to the center of the bus. The left side air bags deflated quite a bit after about 20 minutes but the right stayed up. Any Ideas would be a great help. I am going to purchase all the manuals I can shortly but with the purchase of the bus, the tow and other misc cost,s I have to wait till next paycheck. If any can send me a soft copy of the air system diagram that would be a great help. Thanks and Merry Christmas to all the BusNuts out there.. | ||
| Gus Causbie (Gusc)
Registered Member Username: Gusc Post Number: 262 Registered: 11-2005 Posted From: 206.40.238.19 Rating: N/A |
Gerald, Could be the air windshield wiper controls. Try turning them all the way to the right (CW) and releasing them. This is the park position and the knobs should snap back and stop the air leak. The bags inflate very slowly even when used often if they are all the way down. It may just need to have more air. It obviously could be some other place but this is an easy one to check first. You cannot expect the air bag system to stay inflated very long if the bus has been sitting a long time. I'm not at home so can't send any photos. | ||
| Tim Hoskinson (Tdh37514151)
Registered Member Username: Tdh37514151 Post Number: 200 Registered: 9-2004 Posted From: 4.252.69.113 Rating: N/A |
Hi Gerald the leak in the service compartment could be lots of things mine hade a air pressure alarm switch leaking once. That can be checked out with some dish soap. As far as the leaking off on one side the most common cause is the leveling valve. I have one on my 4104 that sometimes leaks off and the very next time you air it up it dosen't leak. They are cheap and easy to change. Your bus has more than likely been up dated from the original oil filled units. Of course another cause of this is a leak in the air frame but I would look for the easy repairs first. Next time you air up go back to the rear wheels look in behind and just ahead of the wheels you shuold see the valve with the linkage going down mounting to the rear end. listen to see if you can here air from the valve. As Gus stated the bags take a good bit of air and they may not have filled completely. If this is so the valve is trying to take on more air and the supply has been shut off to soon. Now the bag has not been filled all the way so the air pressure in the bag is higher than the system tank so it begins to flow back to the tank. In this condition you can hear air moving but can't detect an outward leak. Like Gus said air it a few times and see if the problem seems to go away. If not you may need a valve Best of luck. Tim | ||
| Gerald Norman (Gnorman46)
Registered Member Username: Gnorman46 Post Number: 12 Registered: 12-2006 Posted From: 68.241.145.145 Rating: N/A |
Thanks, we did shut off the air as soon as the right side was up, I wasnt sure if the bags on the right would overfill or not. | ||
| Gus Causbie (Gusc)
Registered Member Username: Gusc Post Number: 264 Registered: 11-2005 Posted From: 206.40.238.26 Rating: N/A |
Gerals, They will self level if given enough time, one won't overfill unless something fails. | ||
| john w. roan (Chessie4905)
Registered Member Username: Chessie4905 Post Number: 368 Registered: 10-2003 Posted From: 71.58.126.56 Rating: N/A |
Buy yourself a " mechanic's stethoscope ". It works great to track down leaks. Then if you go to a refrigeration supply place, they sell a leak detector liquid that works quite well. With the two items, you can track down almost any air leak.Remove the metal end and amplifier on the stethoscope to listen for leaks. Some use a piece of hose, which will work for louder leaks, and some use a soap solution which will work, but makes stuff slippery when done. Oh, yeah... have engine off and everything quiet while you do this for best results. Send Mom inside the house as you can't hear much of anything while she is giving you hell for spending all your time and money on this coach  PS. sometime the leak at a component can be coming back the line from the real culprit. More on that after you locate the source of the leak. | ||
| stephen gaines (Kysteve)
Registered Member Username: Kysteve Post Number: 2 Registered: 12-2006 Posted From: 74.140.165.225 Rating: N/A |
Gerald, Just reading in and wanted to slip a reminder in to you about blocking up your frame for safety. I think it was Fast Fred that I read this reminder from last. If youve got your head or torso in between the fender and tire and you get a sudden loss of air (like slightly tugging on an allmost broken off copper air line fitting and having it snap off in your hand) that big gap is goin to get small pretty quick. Ive done it myself and it gets your heart pumping pretty fast. Safety first, Steve | ||
| Gerald Norman (Gnorman46)
Registered Member Username: Gnorman46 Post Number: 18 Registered: 12-2006 Posted From: 68.241.68.235 Rating: N/A |
Thanks, I am all about safety and blocking vehicles when working on them, my uncle was a mechanic and always said don't get under that car without stands. He never did except one time, the car fell on him and crushed him. Any safety tips are welcome on this end. |