Reply
 
Thread Tools Display Modes
 
Old 05-04-2019, 09:11 AM   #1
Skoolie
 
Join Date: Dec 2018
Location: Colebrook CT
Posts: 145
Year: 1989
Coachwork: MCI
Chassis: 96A3
Engine: 6V92
Air tanks

Hi! I just got a BB all american and I love it! My question is, since it has air brakes do I need to drain the water out of the air tanks occasionally? Does the air system need any other maintenance?

Thanks!
Andy
Mtrdrms is offline   Reply With Quote
Old 05-04-2019, 12:20 PM   #2
Bus Geek
 
o1marc's Avatar
 
Join Date: Dec 2017
Location: Dawsonville, Ga.
Posts: 8,306
Year: 1999
Coachwork: Genesis
Chassis: International
Engine: DT466/3060
Rated Cap: 77
Drain the water from the tanks every single day.
o1marc is offline   Reply With Quote
Old 05-04-2019, 12:32 PM   #3
Bus Crazy
 
david.dgeorge07's Avatar
 
Join Date: May 2017
Location: Chattanooga, TN
Posts: 1,404
Year: 2001
Coachwork: Thomas
Chassis: Thomas
Engine: CAT 3126
If it has an air dryer you only need to before freezing weather.

Just make sure your air dryer is working and has a fresh element.
__________________
My Build Thread:

http://www.skoolie.net/forums/f11/4-...ner-18205.html
david.dgeorge07 is offline   Reply With Quote
Old 05-04-2019, 04:39 PM   #4
Skoolie
 
Join Date: Dec 2018
Location: Colebrook CT
Posts: 145
Year: 1989
Coachwork: MCI
Chassis: 96A3
Engine: 6V92
Ok, so the tanks that I found are under the front of the bus. Do i have to climb under there everyday? How do i know if there is a dryer?
__________________
Double-clutching my way to the bank...
Mtrdrms is offline   Reply With Quote
Old 05-04-2019, 04:54 PM   #5
Bus Geek
 
o1marc's Avatar
 
Join Date: Dec 2017
Location: Dawsonville, Ga.
Posts: 8,306
Year: 1999
Coachwork: Genesis
Chassis: International
Engine: DT466/3060
Rated Cap: 77
There should be a pull cable coming off the tank attached to the outer skin of the bus. Just pull the cable a few seconds every time you get in to drive
Attached Images
File Type: jpg 20190504_165034.jpg (56.3 KB, 10 views)
o1marc is offline   Reply With Quote
Old 05-04-2019, 07:28 PM   #6
Bus Crazy
 
david.dgeorge07's Avatar
 
Join Date: May 2017
Location: Chattanooga, TN
Posts: 1,404
Year: 2001
Coachwork: Thomas
Chassis: Thomas
Engine: CAT 3126
Depends on your bus. Mine has no pull cable. You have to climb under and there are 4 tanks with brass valves that twist 1/4 turn, but like I said I do this only once in a while since I have an air dryer.

Mine are roughly mid-ship close to the fuel tank. They look a little like scuba tanks.

My air dryer is just in front of my rear axle, but my bus is a pusher. Iím sure it varies by make and model.

Crawl around following the air lines for a while and everything will start to make sense.
__________________
My Build Thread:

http://www.skoolie.net/forums/f11/4-...ner-18205.html
david.dgeorge07 is offline   Reply With Quote
Old 05-04-2019, 07:36 PM   #7
Bus Geek
 
o1marc's Avatar
 
Join Date: Dec 2017
Location: Dawsonville, Ga.
Posts: 8,306
Year: 1999
Coachwork: Genesis
Chassis: International
Engine: DT466/3060
Rated Cap: 77
Quote:
Originally Posted by david.dgeorge07 View Post
Depends on your bus. Mine has no pull cable. You have to climb under and there are 4 tanks with brass valves that twist 1/4 turn, but like I said I do this only once in a while since I have an air dryer.

Mine are roughly mid-ship close to the fuel tank. They look a little like scuba tanks.

My air dryer is just in front of my rear axle, but my bus is a pusher. Iím sure it varies by make and model.

Crawl around following the air lines for a while and everything will start to make sense.
I'd definitely replace the valves with pull valves ($7) if I had to climb under every time they needed draining.

https://compressor-source.com/collec...-style-drain-1
Attached Images
File Type: jpg drain.jpg (43.1 KB, 3 views)
o1marc is offline   Reply With Quote
Old 05-04-2019, 09:17 PM   #8
Bus Crazy
 
ol trunt's Avatar
 
Join Date: Apr 2012
Location: So Cal
Posts: 2,456
Year: 1935
Coachwork: Superior
Chassis: Chevy
Engine: 317 ci/tid / Isuzu
My MCI had one and it worked just fine. However, if the pull is at much of an angle the release valve can be bent which will cause the tank to leak down quickly.
Jack
ol trunt is offline   Reply With Quote
Old 05-04-2019, 09:24 PM   #9
Bus Geek
 
o1marc's Avatar
 
Join Date: Dec 2017
Location: Dawsonville, Ga.
Posts: 8,306
Year: 1999
Coachwork: Genesis
Chassis: International
Engine: DT466/3060
Rated Cap: 77
Quote:
Originally Posted by ol trunt View Post
My MCI had one and it worked just fine. However, if the pull is at much of an angle the release valve can be bent which will cause the tank to leak down quickly.
Jack
I thought of that and noticed on this one it actually pulls to the side and not straight out.

This valve drains when the connected cable pulls the pin in the center of the valve to the side.
o1marc is offline   Reply With Quote
Old 05-05-2019, 01:17 AM   #10
Bus Nut
 
Mountain Gnome's Avatar
 
Join Date: Oct 2017
Posts: 382
Year: 1999
Coachwork: BlueBird
Chassis: TC1000 HandyBus
Engine: 5.9L 24V-L6 Cummins ISB
Rated Cap: 26 foot
My BlueBird TC1000 has a door just in front of the front tire, under the driver's side window and the electrical panel, behind which are three air-tank drain valves. Each tank has a tube feeding to a valve. Super nice.


One leaks a bit when it is really cold outside. I bought a new valve from a Peterson dealer in Eugene like the one on the far left in the pic, but the old is installed with what looks like that white liquid/gel Teflon stuff that comes in a tube like RTF silicone for your water pump. It hardens solid. I tried to torque it off, but it was straining the valve's mount! I decided it might be best not to deal with it on the road, as an air-tank is behind the panel of valves, and would likely need to be removed to fix the valve if things break trying to unscrew the stuck fitting. Maybe if I heat it just a bit with a mini-torch?

I've used that stuff before. No more! Stick with Teflon tape.
Attached Images
File Type: jpg 0505190103a[1].jpg (125.6 KB, 15 views)
File Type: jpg 0505190104a[1].jpg (98.6 KB, 5 views)
Mountain Gnome is offline   Reply With Quote
Old 05-05-2019, 08:17 AM   #11
Skoolie
 
Join Date: Dec 2018
Location: Colebrook CT
Posts: 145
Year: 1989
Coachwork: MCI
Chassis: 96A3
Engine: 6V92
Thank you guys for the helpful info and pictures. Its raining but I'm going out in a few to check it out. I didn't see any access panel for manual valve release but I'll look again.
Also, the front air bags will go down overnight so when I start it up in the morning it takes a minite for the tanks to fill. Is that normal?

Thanks again - I'm learning and I love it!
__________________
Double-clutching my way to the bank...
Mtrdrms is offline   Reply With Quote
Old 05-05-2019, 11:15 AM   #12
Bus Nut
 
Mountain Gnome's Avatar
 
Join Date: Oct 2017
Posts: 382
Year: 1999
Coachwork: BlueBird
Chassis: TC1000 HandyBus
Engine: 5.9L 24V-L6 Cummins ISB
Rated Cap: 26 foot
Most of us here it seems have to wait a few minutes for the air-brakes to pump up in the morning. In the winter, the pressure may drop to near 0 (as shown on my dash gauge) overnight. Lately, it has held at just below 60psi for several days.
60psi is minimum; I wait till it reaches the top (about 120psi) before driving. Gives the motor time to warm up a bit also.
Mountain Gnome is offline   Reply With Quote
Old 05-05-2019, 11:51 AM   #13
Bus Crazy
 
Join Date: May 2016
Location: Georgia
Posts: 1,655
Year: 2001
Coachwork: Blue Bird
Chassis: IH
Engine: T444E
Rated Cap: 14
Quote:
Originally Posted by Mtrdrms View Post
Also, the front air bags will go down overnight so when I start it up in the morning it takes a minute for the tanks to fill. Is that normal?

Yes. Very common.
Brad_SwiftFur is offline   Reply With Quote
Old 05-19-2019, 12:40 PM   #14
Mini-Skoolie
 
Join Date: Apr 2019
Location: Dallas
Posts: 20
Year: 2001
Coachwork: GILLIG
Chassis: G18E102R2
Engine: Cummins ISC 8.3
Rated Cap: 23 sits 33 stand
Air tank drains

Tech sheet says to drain air brake tanks daily. On our low floor transit bus the tanks are in the bus overhead?? but lines go to the battery compartment where there is a tank-drain-door to allow the tanks to be drained easily. Drain valves are 90 degree cocks,
oleman is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 09:15 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×