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Topic: Max governor PSI (Read 799 times) previous topic - next topic

Re: Max governor PSI

Reply #25 –
Quote from: Elliott –
Once I hit raise, they almost immediately drop to the cutoff around 75psi. Not sure if the front gauge ever gets back up to 120psi as I'm hitting "raise'.
If your D2 governor is set to cut out the air compressor at 120-130psi, then the compressor should cut in at about 90-100psi.  Your dash gauges should never get down to 75psi during the RAISE operation.

Your HWH low air pressure alarm (light or beeper) should go off when system pressure drops below about 80psi.

However, even 75psi in the front brake tank should be sufficient to raise the front end of the coach (as long as your front brake tank protection valve does not close).

You just need to make sure that pressure is getting through the front pressure regulator, through the 6-pack manifold, and on to all 4 air bags.


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: Max governor PSI

Reply #26 –
Quote from: Elliott –
Rear brake tank.

Pressure in both gauges reads at 120psi before I hit raise. Once I hit raise, they almost immediately drop to the cutoff around 75psi. Not sure if the front gauge ever gets back up to 120psi as I'm hitting "raise'.  That's something I'll check tonight.

Hold in the raise and see if pressure on  gauges builds.  If it holds and does not build, then let off raise until pressure is up again. Once pressure is up hit raise again, then repeat until air bags are full.
2014 ih45  (4th Foretravel owned)
 1997 36' U295 Sold in 2020, owned for 19 years
  U240 36' Sold to insurance company after melting in garage fire
    33' Foretravel on Dodge Chassis  Sold very long time ago

Re: Max governor PSI

Reply #27 –
Quote from: turbojack –
Hold in the raise and see if pressure on  gauges builds.  If it holds and does not build, then let off raise until pressure is up again. Once pressure is up hit raise again, then repeat until air bags are full.
My "raise" button is latching. I just click it once and it stays in the raise mode until I click a different button.
1987 Grand Villa ORED
2001 U320 4010

Not all that wander are lost... but I often am.

Re: Max governor PSI

Reply #28 –
So here's what I know:
1) I put coach in high idle and get tanks completely filled. Wait until I hear the purge.
2) I put it in raise mode and let it run. At this point pressure in the front gauge drops by about 25 psi almost immediately. Coach begins to raise.
3) let coach raise until I hear purge again. Both tanks back at "full" (I tried it with a few different governor settings from 120-150psi)
4) all corners but the one in question extend fully like I would expect, front right corner continues to not fully extend.

It does not matter how long I wait, that one corner just won't go up all the way like it used to. No change in behavior if I adjust the governor to 150psi like you guys suggested.
1987 Grand Villa ORED
2001 U320 4010

Not all that wander are lost... but I often am.

Re: Max governor PSI

Reply #29 –
AFAIK nobody (in this thread) suggested you raise your D2 governor setting to 150psi.  One member did say he runs his coach at that pressure.  That was a comment - not a suggestion.

Take a look at the air pressure regulator for the front 6-pack.  If it is set on 60psi try raising it to 70 or 80 or 90 and see if that helps.

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: Max governor PSI

Reply #30 –
Quote from: Chuck & Jeannie –
AFAIK nobody (in this thread) suggested you raise your D2 governor setting to 150psi.  One member did say he runs his at that pressure.  That was a comment - not a suggestion.

Take a look at the air pressure regulator for the front 6-pack.  If it is set on 60psi try raising it to 70 or 80 or 90 and see if that helps.
You misunderstand my comment. Changing it to 150 psi had no affect. That is exactly the results you guys predicted.

I can't get to the regulator for the front six pack because it's under the coach, and I can't get my safety stands in.

I'm going to play around with positioning of the coach and see if I can get it a little more level. If not I'll just bite the bullet and go have a couple more safety stands made at a shorter length
1987 Grand Villa ORED
2001 U320 4010

Not all that wander are lost... but I often am.

Re: Max governor PSI

Reply #31 –
Do you have some blocks that you can drive the front up on to get some working clearance?
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Max governor PSI

Reply #32 –
Quote from: craneman –
Do you have some blocks that you can drive the front up on to get some working clearance?
Yea I do. It's probably enough to get me to the regulator, just not to do much other work. Good idea

On a side note, other one of my %#*@ing good year bags failed internally after six months.

1987 Grand Villa ORED
2001 U320 4010

Not all that wander are lost... but I often am.

Re: Max governor PSI

Reply #33 –
Use a bottle jack to finish raising the right front then put in the safety stand then adjust the regulator for the front 6 pack. If after adjusting the regulator it still won't raise it could be caused by the raise solenoid valve or maybe the check valve in the 6 pack.
previous 1984 35 ft ORED 250 HP 3208 Cat       
previous 1998 40 ft U295 CAI 325 hp Cummins
previous 2003 40 Ft u320 build #6140 450 Cummins M11.                                                         
1999 Mazda Miata
Ron, Nancy, Tipper the cat, Max The dog
1997 U 270 36 ft build number 5174 8.3 Cummins
 

Re: Max governor PSI

Reply #34 –
Got it up on ramps and slid under. I can't even read the regulator's gauge, too much gunk on the inside of the class. I've got enough room to work on my back though so I'm just going to start replacing everything including the regulator. Somebody put one of those damn plastic shark fittings on one of the big airlines and it leaks tremendously, the tanks bleed out in a matter of minutes.
1987 Grand Villa ORED
2001 U320 4010

Not all that wander are lost... but I often am.