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Topic: D2 governor identification (Read 897 times) previous topic - next topic

D2 governor identification

I am trying to find my D2 governor so that I can adjust it. Is this it?
Royce & Denise, MC #17410
'01 U320 4220 ISM450 Build #5895 SOLD
Toad: '10 Honda CR-V

Travel makes one modest. You see what a tiny place you occupy in the world. - Gustave Flaubert

Re: D2 governor identification

Reply #1 –
Royce,

That looks like the 120vac engine heating element. Check to see if the cord runs up to the plug at the front of the engine compartment.  Your D2 should be on the other side of the engine closer to your air compressor.

Pamela & Mike
Pamela & Mike 97 U 320

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

Re: D2 governor identification

Reply #2 –
Here's a picture of mine on a 6/92 should look just like it on the engine compressor
Andy & Eileen
MONTROSE COLORADO
1992 U300  40' 6V92 TA
2016 4 Runner
1998 Jeep Grand cherokee

1998 Jeep Grand Cherokee) Build # 4135 Skp# 122921

Re: D2 governor identification

Reply #3 –
Ours is mounted on the frame, curb side, engine compartment, hidden behind the power steering hydraulic reservoir.
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: D2 governor identification

Reply #4 –
Both my coaches had the D2 located on the side frame rails, near the compressor and dryer.  On the 1998, U295, it is in plain view, curb side.

They are preset at some number and can be adjusted by removing the top black plastic cap and turning the screw found under in the center.  Many threads about how high one should set the limits.
Dave Cobb
Buckhorn Lake Resort The Club, #6202, Kerrville TX
check the map.  I do rent it out when I am traveling!
2001, U320, 36' #5887, in Kerrville, FT Club #17006, (7/23 to present)
2024 Jeep Grand Cherokee L, Summit, white
EX: 98 U295, 36' #5219, (mid door), (4/13-10/23)
EX: 93 U225, 36' (4/11 to 4/13)

Re: D2 governor identification

Reply #5 –
Quote from: Chuck & Jeannie –
Ours is mounted on the frame, curb side, engine compartment, hidden behind the power steering hydraulic reservoir.
What is the purpose of the valve?
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: D2 governor identification

Reply #6 –
They are very affordable through NAPA. And very straight forward to replace. Most likely preset wouldn't go out of adjustment.
Tom
1998 U320 40'

Re: D2 governor identification

Reply #7 –
Royce,

All you want (need) to know about the D2.  Adjustment procedure on page 2, upper right corner.

BENDIX D-2 GOVERNOR MANUAL Pdf Download.
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: D2 governor identification

Reply #8 –
Quote from: Chuck & Jeannie –
All you want (need) to know about the D2.  Adjustment procedure on page 2, upper right corner.

BENDIX D-2 GOVERNOR MANUAL Pdf Download.
I am talking about the valve you put in the port of the governor.
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: D2 governor identification

Reply #9 –
Quote from: craneman –
What is the purpose of the valve?
That is the supply line for my "wet tank" pressure gauge, mounted in engine compartment.
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: D2 governor identification

Reply #10 –
I think I have found my governor but I don't think it is a Bendix. It doesn't look much like the one in the service document at the link posted by Chuck above. I can see stamped labels for the unload, reservoir (supply tank), and exhaust ports. However, what is throwing me is the adjustment cap, if that is what the black end piece is. It does unscrew, but that doesn't fit the description that I have read in the service document. Anyone else have one like this?

Royce & Denise, MC #17410
'01 U320 4220 ISM450 Build #5895 SOLD
Toad: '10 Honda CR-V

Travel makes one modest. You see what a tiny place you occupy in the world. - Gustave Flaubert

Re: D2 governor identification

Reply #11 –
That does not look like a air governor.
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: D2 governor identification

Reply #12 –
I have to disagree with craneman - that is a D-2 governor, exactly the same as in my photos above.  Royce's photos are just taken at a "lower" angle, and the 3rd one needs to be rotated 90 degrees to the right.  I can't see enough of the cap on the top to tell which kind it is.  In the tech document I linked above, it mentions there are 3 different styles of cap.  I think this one may be the "black rubber" model.

Royce, if you can unscrew the cap, go ahead and do so.  If you have the threaded screw and lock nut under the cap, it is a adjustable D-2.

Also, if I were you, I would pick up a spare D-2 the next time you visit a NAPA store.  They are not expensive, and it is good insurance to carry one in your coach.  The one in your photos looks like it has been in place for quite a while, so it may be nearing the end of it's service life.  Or, it may last another million miles...who knows?  Like Ken(hat) says, "Carry a spare, and the old one will never fail".
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: D2 governor identification

Reply #13 –
You are right Chuck, I didn't look at the third picture good enough.
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: D2 governor identification

Reply #14 –
Thanks, appreciate the help.
Royce & Denise, MC #17410
'01 U320 4220 ISM450 Build #5895 SOLD
Toad: '10 Honda CR-V

Travel makes one modest. You see what a tiny place you occupy in the world. - Gustave Flaubert

Re: D2 governor identification

Reply #15 –
If your D2 is out of adjustment I would replace it.  It is an important part that is directly related to your brake system and all other air systems on your coach.  If it has lost adjustment from preset, it is starting to fail.  The part cost approximately $18.00 and will take less than a half hour to replace.  It can be purchased at any Bendix dealer / large truck parts place.
This advice is from my son who is a diesel master tech.  He says their business never adjust and always replace the D2 as a policy if they loose adjustment.
I replaced mine last week while on the road when the "unload" pressure started to climb.  I carry a spare on the coach--- cheap insurance.
Current coach 1996 U320 40'
Previous coach, 1990 36' U280