Home » Public Forums » GMCnet » Fast Onan Question
| Fast Onan Question [message #153645] |
Mon, 19 December 2011 22:36  |
RadioActiveGMC
Messages: 1020
Registered: November 2010
Location: Hot AZ desert
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Did the Original Onan genset liek the one from my year GMC (73) "pull-out" on a pull out tray? Mine does, I can pull my Onan out with its slide tray to service it. I was just wondering if all GMC generators do that?
***"Gettin There"-1973 23' Sequoia-
Michael, Onans smell, "Go solar/wind power!"
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| Re: Fast Onan Question [message #153650 is a reply to message #153645] |
Mon, 19 December 2011 22:54  |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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| Mr.RadioActive wrote on Mon, 19 December 2011 22:36 |
Did the Original Onan genset liek the one from my year GMC (73) "pull-out" on a pull out tray? Mine does, I can pull my Onan out with its slide tray to service it. I was just wondering if all GMC generators do that?
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All the GMCMH Onans are pullout. Known as "Power Drawer". Not sure about the Kohler units.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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| Re: Fast Onan Question [message #153652 is a reply to message #153645] |
Mon, 19 December 2011 22:58 |
RadioActiveGMC
Messages: 1020
Registered: November 2010
Location: Hot AZ desert
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Great, what year started to have the battery also slide out since mine is under the seat in the rear.
Also I said it was a fast question, but another quick one, when using the generator does anyone pull it out. Just figured it would allow heat to escape easier and keep the exhaust out away from the coach a little more.
***"Gettin There"-1973 23' Sequoia-
Michael, Onans smell, "Go solar/wind power!"
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| Re: Fast Onan Question [message #153685 is a reply to message #153652] |
Tue, 20 December 2011 08:31 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
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| Mr.RadioActive wrote on Mon, 19 December 2011 23:58 |
Great, what year started to have the battery also slide out since mine is under the seat in the rear.
Also I said it was a fast question, but another quick one, when using the generator does anyone pull it out. Just figured it would allow heat to escape easier and keep the exhaust out away from the coach a little more.
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Mike,
There is no room in the rear of a 23 for the house bank.
The battery-Onan arrangement is quite different in a 73-23 and almost anything else. Only 73-4 had the APU start battery in the rear and a house bank in the front. GM quit upfitting 23s for 75my, that is also when the house bank went to the rear and is also the APU start. The battery drawer is a completely after market piece and only fits in a 26. (Yes, I am a little jealous.) The space is there regardless of build year and most 26 have been refit to have the house bank in the rear.
There is volume in the APU locker aft of the Onan that is inaccessible. Other than the squirrel that used the space to store his stash of walnuts, I have not known any use to be made of it.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: Fast Onan Question [message #153688 is a reply to message #153645] |
Tue, 20 December 2011 08:44 |
Dennis S
Messages: 3046
Registered: November 2005
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| Mr.RadioActive wrote on Mon, 19 December 2011 22:36 |
Did the Original Onan genset liek the one from my year GMC (73) "pull-out" on a pull out tray? Mine does, I can pull my Onan out with its slide tray to service it. I was just wondering if all GMC generators do that?
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Michael,
Here is a poor photo showing the battery on my 73, 23 ft. Sits in a hole accessible from inside the coach -- under a gaucho cushion. I power the macerator from this battery as well.
http://www.gmcmhphotos.com/photos/showphoto.php?photo=38037&title=pertronis3-002&cat=4620
Dennis
Dennis S
73 Painted Desert 230
Memphis TN Metro
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| Re: Fast Onan Question [message #153700 is a reply to message #153652] |
Tue, 20 December 2011 09:16 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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| Mr.RadioActive wrote on Mon, 19 December 2011 21:58 |
Great, what year started to have the battery also slide out since mine is under the seat in the rear.
Also I said it was a fast question, but another quick one, when using the generator does anyone pull it out. Just figured it would allow heat to escape easier and keep the exhaust out away from the coach a little more.
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The slide out batteries were never a GM supplied arrangement. Many people have added battery slide-outs later.
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: [GMCnet] Fast Onan Question [message #153712 is a reply to message #153685] |
Tue, 20 December 2011 09:42 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
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Matt,
Does your electrical cable not store behind the APU compartment? Most
Birchavens I've seen have a cable door in the side of the rear cap into
which the cable is pushed to curl up into that blind space.
Ken H.
On Tue, Dec 20, 2011 at 9:31 AM, Matt Colie wrote:
> ...
> There is volume in the APU locker aft of the Onan that is inaccessible.
> Other than the squirrel that used the space to store his stash of walnuts,
> I have not known any use to be made of it.
>
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Fast Onan Question [message #153728 is a reply to message #153712] |
Tue, 20 December 2011 11:46 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
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IIRC: The GM upfitted 23 foot coaches had the same "electrical cable" compartment over the street side rear wheels as the 26 foot coaches.
I agree that having the cord utilize the space behind the Onan would be much better. BUT, I would not do it like Coachman did it... I find the little doors they used rather ugly. My plan (for any of the coaches) is to move the access to behind the license plate. I found some flip down plate holders at the junkyard. It is on the list... almost as far down my list as a paint job.
My thought on the compartment that GM put the cord in? It looks like a good location for an outside shower.
| Ken Henderson wrote on Tue, 20 December 2011 07:42 |
Does your electrical cable not store behind the APU compartment? Most
Birchavens I've seen have a cable door in the side of the rear cap into
which the cable is pushed to curl up into that blind space.
On Tue, Dec 20, 2011 at 9:31 AM, Matt Colie wrote:
> ...
> There is volume in the APU locker aft of the Onan that is inaccessible.
> Other than the squirrel that used the space to store his stash of walnuts,
> I have not known any use to be made of it.
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Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: [GMCnet] Fast Onan Question [message #153735 is a reply to message #153728] |
Tue, 20 December 2011 12:03 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Mike,
I agree with you that the Coachmen wiring plug cover is chintzy --
especially now that I've replaced the always-breaking bakelite plug
with a more substantial one -- which won't let the door close. :-(
When I installed the flip-down license plate I was more concerned
about getting rear control of the air suspension than hiding the
utilities, so I filled that area with switches. No turning back now,
that I can see.
An interesting side note: When I gutted the GMC I found that there
was structure at the rear, above the Onan, for a standard GMC utility
door casing. So I got a door from Zeb Frady and made a jig to guide a
router around the outer contour. When I cut the plug out, lo &
behold, there was a welded-on striker lug for the latch! Behind that
door is now a fairly good sized fiberglassed storage compartment,
beneath the floor of the bathroom closet. Water hoses, extension
cables, adapters, etc., all reside there.
Some years ago I bought a purpose-designed external shower compartment
with door. I've never installed it because I can't figure out how to
duplicate the setup I had on the 40' SOB: I had a U-shaped 3/4"
aluminum tube "curtain rod" which swung up against the side of the
coach, surprisingly innocuously. A plastic curtain around that gave
me a private outdoor shower for use in relatively private parking
locations. I seldom used the inside shower upon return from the gym
and beach, even though it was home-sized.
Ken H.
On Tue, Dec 20, 2011 at 12:46 PM, Mike Miller wrote:
>
>
> IIRC: The GM upfitted 23 foot coaches had the same "electrical cable" compartment over the street side rear wheels as the 26 foot coaches.
>
> I agree that having the cord utilize the space behind the Onan would be much better. Â BUT, I would not do it like Coachman did it... I find the little doors they used rather ugly. Â My plan (for any of the coaches) is to move the access to behind the license plate. Â I found some flip down plate holders at the junkyard. Â It is on the list... almost as far down my list as a paint job.
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Fast Onan Question [message #153784 is a reply to message #153735] |
Tue, 20 December 2011 17:43 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
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| Ken Henderson wrote on Tue, 20 December 2011 10:03 |
...
An interesting side note: When I gutted the GMC I found that there
was structure at the rear, above the Onan, for a standard GMC utility
door casing. So I got a door from Zeb Frady and made a jig to guide a
router around the outer contour. When I cut the plug out, lo &
behold, there was a welded-on striker lug for the latch! Behind that
door is now a fairly good sized fiberglassed storage compartment,
beneath the floor of the bathroom closet. Water hoses, extension
cables, adapters, etc., all reside there. ...
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The only coach I have ever "seen" with a door where you seem to be saying was the 23 foot Avion:
<https://picasaweb.google.com/116133311780080773161/Avion23#5495658931941565906>
As this is the only 23 foot Avion I have even seen pictures of, I do not know if it is "standard" or not.... I expect "standard" as the circuit breaker panel is just inside... behind the street side dinette seat back.
I also use the space above the Onan for storage, just access it from inside the coach. (The closet floor lifts out in sections.)
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: Fast Onan Question [message #153836 is a reply to message #153645] |
Tue, 20 December 2011 22:10 |
RadioActiveGMC
Messages: 1020
Registered: November 2010
Location: Hot AZ desert
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Vibration is a major concern for sure. Didn't know about the cooling however very interesting.
***"Gettin There"-1973 23' Sequoia-
Michael, Onans smell, "Go solar/wind power!"
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| Re: [GMCnet] Fast Onan Question [message #153862 is a reply to message #153803] |
Wed, 21 December 2011 06:10 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
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My 23' Norris upfit is done that way. The door is about 8x20, and the compartment is such that it's easy to just push the cable into a roll on the walls of the (shallow) compartment. There's no genset plughole in there, Norris used a switch inside under teh vanity to select genset or shore power. The switch back is in the genst bay where the shore power cable also runs, not in the cabionet with the rest of the electrics.
--johnny
'76 23' transmode Norris
'76 paslm beach
________________________________
From: Ken Henderson <hend4800@bellsouth.net>
To: gmclist@temp.gmcnet.org
Sent: Tuesday, December 20, 2011 8:36 PM
Subject: Re: [GMCnet] Fast Onan Question
If you blow this photo up and look very carefully directly above the
generator door just above the beltline, you can see the door. I've
seen one other coach with it.
http://www.gmcmhphotos.com/photos/showphoto.php?photo=440&cat=3055
Sorry I can't offer a blow up of that area, but I seem to have lost my
copy of the photos in that album. Thank goodness for bdub & his
GMCMHPhotos!
Ken H.
On Tue, Dec 20, 2011 at 6:43 PM, Mike Miller wrote:
> The only coach I have ever "seen" with a door where you seem to be saying was the 23 foot Avion:
> <https://picasaweb.google.com/116133311780080773161/Avion23#5495658931941565906>
>
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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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