[Jon]

Ok, got it. We have new regulator but mini bags still leaks down. So, the air leak hunt continues.

[Fred F.]

That’s the problem with that system because there are so many potential leakage points you need a large bottle of soapy water to check them all, including the air bags themselves.

[Jim/Chris]

Jim, it is a very good chance it is your check valve. BoaterAl used to have the part. numbers and source info. I changed my check valve just after I got my coach, but didn’t put that info in my logs. The check valve looks like an elongated fitting screwed in the inlet to the regulator.

[Paul]

I copied Al’s post years ago. This is what he posted:

Engine air bag check valve:
Order from:
Valve Check Inc. Maplewood MN. 651-330-3437

Part # 6203-2-1MM-1 (6200 series, 1/8 Male NPT x 1/8″ Male NPT check, brass., Viton seal, 1psi cracking)

$130 plus shipping
AL

[Paul]

Fred, thanks. Found that pesky valve. JohnB. Thanks for copying BA’s info. On it, Monday!

[Jon]

I adopted Jon’s jack screw idea several years ago as I did not like the belts being loose when the engine started and also got tired of the air leaks. It has been a great improvement. Last weekend I was changing belts and the bolt broke in half when taking the nuts off. I always carry spare belts and now carry a spare bolt as well.

[Jerry]

I purchased mine from Prevost. Price was reasonable, shipping fast and it fit properly. No need to waste time trying to save a small amount. My take, anyway.

jerry

[DON]

FulltimeBill, 7 yrs ago we replaced the original leaky regulator with a unit from Tractor Supply for $35. It’s still working perfectly but we did have to make a new mount.

[Mark]

Thanks to you both. I was looking for the easy option so I ordered that part from Prevost. The regulator was available for $60 or a kit with all the associated parts for $600. I said “WTF” and she said the 4 way valve was $400. Does that make any sense to anyone? That can’t be right.

[Art]

Yes that valve with the red knob 4 or 5 years ago was over $350 bucks, mine was leaking bad, It’s for a bus driver to change belts without tools, I replaced it with a brass 1/4 inch ball valve and a new check valve, to loosen belts close ball valve push schreder valve. My belts are always tight.