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Topic: Dash Air gauge has two indicators. one white, one red.. ??? (Read 2754 times) previous topic - next topic

Dash Air gauge has two indicators. one white, one red.. ???


I have one gauge for air pressure on my dash

One white and one red indicator ..  I assume one is for brakes? and one for suspension?

Mark
1989 Grand Villa, U300 6V92TA Detroit 40'
Mark, Houston Texas,  East Side

If you are so inclined to burn the American flag,  wrap yourself in it first please.

Re: Dash Air gauge has two indicators. one white, one red.. ???

Reply #1 –
Quote from: Mark of Houston –
I have one gauge for air pressure on my dash
One white and one red indicator .
Mark
Mark,

One needle is for the front air tank the other for the rear(not your wet air tank).

Pamela & Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: Dash Air gauge has two indicators. one white, one red.. ???

Reply #2 –
On our dash air gauge, the red needle is the "front" tank, and the white needle is the "rear" tank.  Both these tanks are located in nose of coach right behind the front "bumper".  Wet tank is mounted near the rear axel.  I installed a handy gauge in the engine compartment that reads wet tank pressure.  Tapped into one of the unused ports on the D2 with a small valve, then ran braided hose up to the gauge.
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Dash Air gauge has two indicators. one white, one red.. ???

Reply #3 –
Mark,

To fully understand your air system, you will need a schematic.  If you didn't get one with the coach, try calling FOT and asking...in some cases they can provide one.  If not, another owner of same year/model coach may be able to email one.  Same goes for electrical system...
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Dash Air gauge has two indicators. one white, one red.. ???

Reply #4 –
Thanks Guys,

I have no front tanks..  all three are side my side mounted center of the coach.... and all three
are pretty much not accessible

Yes, I wish I had the schematics for air and electrical... I did call Foretravel... they wouldn't let me talk with a tech because I'm not a member of the  wagon train
1989 Grand Villa, U300 6V92TA Detroit 40'
Mark, Houston Texas,  East Side

If you are so inclined to burn the American flag,  wrap yourself in it first please.

Re: Dash Air gauge has two indicators. one white, one red.. ???

Reply #5 –
Quote from: Mark of Houston –
I have no front tanks..  all three are side my side mounted center of the coach.... and all three
are pretty much not accessible

Front tank means the "dry air" tank that's plumbed to provide air for the front brakes, etc.  Not necessarily at the front of the coach. 
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Dash Air gauge has two indicators. one white, one red.. ???

Reply #6 –
Mark, here is the simple answer:

Many years ago, both cars (with hydraulic brakes) and trucks (with air brakes) had ONE system.  If a hydraulic (Brake) line rusted through or an air line broke, you had NO BRAKES!!! Don't ask me how I know that!!    :o  :o  :o

The Guvmint decided this was TOO dangerous (I agree!!!) so, they mandated all vehicles have two systems separated by safety interlocks so that if you lose a line in one system, the other one will still work well enough for you to stop (mostly).  :)  :o    :)  :o  :)  :o

There have been a number of additions and revisions to the basic systems since then but on vehicles with air brakes the tank(s) with the white needle gauge usually have the air suspension and other air operated devices and front brakes, the tank(s) with the red needle gauge usually operate the rear brakes only. There are lots of check valves & other features to keep the tank(s) separate in case of emergency.

This is ONLY a very simple explanation. In order to understand or service the air system you REALLY need a schematic of YOUR system, as has already been noted.

Bendix has a number of very good tutorials on their site.

TOM
SOB (Some Other Brand) division
1995 Wanderlodge WB40
8V92 :D

Re: Dash Air gauge has two indicators. one white, one red.. ???

Reply #7 –
If you call FOT parts, they will sell you a complete copy of your owner's manual with schematics.  I was just there last week and they have the offer posted on the parts window.  Prices vary depending on the year of your coach and wether you take it electronically or paper.

Rich
Rich and Peggy Bowman
2002 U270 3610 WTFS, build #5939--"Freedom"
2022 Jeep Grand Cherokee Summit 4xe
SMI AirForceOne brake system
PakCanoe 15

Re: Dash Air gauge has two indicators. one white, one red.. ???

Reply #8 –
"If you call FOT parts, they will sell you a complete copy of your owner's manual with schematics.  I was just there last week and they have the offer posted on the parts window.  Prices vary depending on the year of your coach and wether you take it electronically or paper"

Several years of data were consumed by the fire several years ago.

The '93 U300 for one that I know of.

They made me a "similar"  copy

same price though





1993 U300, 6v92
build 4366
USAF retired, Flight Engineer, C124, C130
 ATP, A & E.  & ex AI

Re: Dash Air gauge has two indicators. one white, one red.. ???

Reply #9 –
Quote from: Rich Bowman –
If you call FOT parts, they will sell you a complete copy of your owner's manual with schematics.  I was just there last week and they have the offer posted on the parts window.  Prices vary depending on the year of your coach and wether you take it electronically or paper.
Rich
This is posted in the FOT RV park Washer/Dryer room.
Good Luck, Dave A
Dave and Nancy Abel
'00 U320 36' WTFE  Build #5669
'10 Jeep Wrangler Unlimited Rubicon
Livingston, TX  SKP's Fulltiming

Re: Dash Air gauge has two indicators. one white, one red.. ???

Reply #10 –
Quote from: Mark of Houston –
Yes, I wish I had the schematics for air and electrical... I did call Foretravel... they wouldn't let me talk with a tech because I'm not a member of the  wagon train

Guess the "your first year of Motorcade Club membership is free" benefit has been eliminated  :thumbsdown:
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Dash Air gauge has two indicators. one white, one red.. ???

Reply #11 –
I don't think membership is automatic; Mark would have to ask for it.
 
Trent
Trent and Jean Eyler
2000  U295  4003  WTFE  ISC  350
Build#5603 MC#17385

Re: Dash Air gauge has two indicators. one white, one red.. ???

Reply #12 –
Quote from: Michelle –
Guess the "your first year of Motorcade Club membership is free" benefit has been eliminated  :thumbsdown:


Motorcade.. yes..  I asked for it and was told the first year is still free..  a 75 dollar value if I remember correctly..  but then she added, sorry cant let you speak to a tech..  you have to pay 25 dollars a year to do that..  they put this rule into effect the first of the year she said...  I didn't have a credit card with me at the time... and I just never called back.. she was very nice though.
1989 Grand Villa, U300 6V92TA Detroit 40'
Mark, Houston Texas,  East Side

If you are so inclined to burn the American flag,  wrap yourself in it first please.
 

Re: Dash Air gauge has two indicators. one white, one red.. ???

Reply #13 –
The two air gauges indicate the Primary and Secondary air pressure. not dry air and wet tank etc, etc. just Pri & Sec pressure.