| Author | Message | ||
| Russell Beam (Rcbeam)
Registered Member Username: Rcbeam Post Number: 18 Registered: 11-2009 Posted From: 74.131.50.239  Rating: N/A |
I took the bus out today for a hour run to exercise her and get fuel. Had my first experience with a truck stop pump at loves. Didn't know that you had to start the main pump in order to use the satellite pump on the right. Finally a very nice trucker showed me how it all worked. I sort of felt like booboo the fool. Anyway, after getting back home and shutting down I checked everything over and found the pressure regulator for the blowers leaking. There is a pin hole about the 10 o'clock position on the back side (toward the front of the bus) of the regulator. I can put my finger over the hole and stop the air leak. It feels like a pin hole. Is this regulator supposed to leak off through this hole? Otherwise the bus did good. No smoke, maintained 170 degrees with very good oil pressure. This was my first run down the interstate with her and I'm pleased. She is still a chore to drive with the sloppy steering, but I'm amazed how much it improved with changing all of the bad radius rod bushings. Any opinions on the regulator? Russell MC8 Lexington Ky | ||
| Patrick levenson (Zubzub)
Registered Member Username: Zubzub Post Number: 246 Registered: 5-2007 Posted From: 70.51.28.192  Rating: N/A |
Don't know the specifics of your regulator but in general the reg needs an air hole on the none pressure side , helps let you know when the diaphragm is blown and also allows the diaphragm to move. FWIW I have fixed a few of these by using silicone sheeting in place of the original rubberized canvassy stuff. | ||
| Dallas Farnworth (Dallas)
Registered Member Username: Dallas Post Number: 68 Registered: 7-2004 Posted From: 98.20.49.87 Rating: N/A |
http://busconversionstuff.com/galleryBCS/thumbnails.php?album=2 | ||
| Russell Beam (Rcbeam)
Registered Member Username: Rcbeam Post Number: 20 Registered: 11-2009 Posted From: 74.131.50.239 Rating: N/A |
so I guess that means it is leaking and needs replaced or repaired. Dallas: the link is asking me for a logon and password. | ||
| Dallas Farnworth (Dallas)
Registered Member Username: Dallas Post Number: 69 Registered: 7-2004 Posted From: 98.20.49.87 Rating: N/A |
Ah, Crap, I'll have to fix that! I think I got it fixed. Try it now. (Message edited by Dallas on August 22, 2010) | ||
| Bob MacIsaac (Wildbob24)
Registered Member Username: Wildbob24 Post Number: 109 Registered: 5-2007 Posted From: 74.176.77.159  Rating: N/A |
Russell, Another alternative is to remove all of those potential air leaks (the regulator, control valve and cylinder, along with the plumbing) and replace the cylinder with a turnbuckle-like manual adjuster. Bob | ||
| Russell Beam (Rcbeam)
Registered Member Username: Rcbeam Post Number: 21 Registered: 11-2009 Posted From: 74.131.50.239 Rating: N/A |
When I looked in my book for info on the pressure regulator didn't find much of anything. Nothing about checking pressure, etc. It did mention measuring distance the piston protrudes on the air cylinder but that was about it. I think the idea of using a turnbuckle is interesting. I never saw the logic of using air pressure on a fan belt anyway. Anyone know why MCI designed that system? | ||
| Buswarrior (Buswarrior)
Registered Member Username: Buswarrior Post Number: 1915 Registered: 12-2000 Posted From: 174.91.147.228  Rating: N/A |
Belts may be changed without tools. When working properly, the cylinder powers both ways, making belt swaps a very easy and relatively clean job. Tension on the belts (and the related abuse to the bearings/bushings of driven equipment)is not left to the variability of which strong arm tightens a fixed adjuster. The time to put thrown belts back on and be operational again is measured in seconds. happy coaching! buswarrior |