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AC Mel 
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Joined: 23 Jan 2010
Location: N.Ca.
Points: 1186
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 Topic: 685T RESCUE
Posted: 23 Jun 2022 at 12:02pm |
Ok...thought I should share this with you guys. We of course monitor the Ritchie Bros. auction site in Sacramento, Ca...it's about 2 hours away. We sell and buy (yes...usually more buying). This AC 685T (AKA to us) as an 11000...showed up....and that's how the story started. So as DAVE...and I hear JOEL say it too....most of the internal parts of these engines are made of UNABTAINIUM. We know that...so we very seldom miss a chance to grab them when we can.So after a short pissing match with another bidder on line....it was ours (and I apologize if it was another Forum member).David picked it up after a septic tank delivery...3hours to the Vacaville area...down I-5 and back..right by RB auction yard. So we know no history on it.....absolutely nothing...it may or may not run
I was always attracted to the spin on oil fiter base that was available on this version....but by the time we figured it out they weren't available anymore. Our speculation is this was probably a generator application.
This engine does not use the accessory drive for the belts as in the dozer application. So we have one of these engines in a farm dozer we bought for parts some years ago. It's a pretty late HD11E model direct drive. All of those changes were made to the dozer application....probably done by a dealer. We bought this for the engine and undercarriage to use on our B series...of course it's to good to take apart. It has of course a oil clutch...and steering clutches. It has a farmer blade on it run by a BEGEE unit on the back. We have not even used it in the yard because the hydraulic cylinders leak so bad...didn't want to fix them. So another thought for this tractor would be to harvest the the hardnose..hydraulics..canopy and rippers from this earlier 11s version that we acquired years ago. This tractor did not run when we got it...it has ..what I would guess would be the 1000 engine...no turbo. We think it was dusted...the previous owner said he could get it started on either...I couldn't...not even as he towed me 3 miles down the road where we could load it. That will happen in our spare time....So back to the 685T...I think they were used in the Gleaner harvesters and other farm equipment after AC construction equipment went away.
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 33617
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Posted: 23 Jun 2022 at 12:36pm |
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VERY Very Cool Mel!!! Thanks!!
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tadams(OH)
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Joined: 17 Sep 2009
Location: Jeromesville, O
Points: 10759
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Posted: 23 Jun 2022 at 12:55pm |
Yes, intesting information a pictures. Thanks.
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CAL(KS)
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Joined: 18 Sep 2009
Location: Chapman, KS
Points: 3800
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Posted: 23 Jun 2022 at 1:06pm |
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Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20
Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15
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HD6 Merv
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Joined: 03 Aug 2010
Location: New Zealand
Points: 495
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Posted: 23 Jun 2022 at 4:07pm |
Great story and pics, as always; thanks Mel and Dave. That late HD11E; i see it has the robert bosch fuel pump; which i understood only came out on the first 11 series B tractors. Do you think it was standard, or a dealer mod ?? There must have been alot of HD11 and HD16 sold into agriculture work in the USA. Cheers boys, and take care, Merv from kiwiland
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tits tyres and tracks
they all cost you money
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AC Mel
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Joined: 23 Jan 2010
Location: N.Ca.
Points: 1186
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Posted: 23 Jun 2022 at 7:48pm |
Merv....That's kind of what I was hoping to explain in my story.....that engine in the 11E tractor is one of the latest model 11000s...being the metric line and being a 685T and I think with an I also...for intercooler maybe 685TI. That engine was tweaked probably by a dealer to put in that tractor...it has the accessory drive pulley...and things like that.I'm sure it was done by one of the 2 or 3 AC dealers here in N.Ca. And yes there were a lot of HD11s and 16s sold here to the farmers in the 1960s and 70s
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orangeman
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Joined: 12 Sep 2009
Points: 1847
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Posted: 26 Jun 2022 at 2:37pm |
AC Mel: Very Nice Engine and story. AC made some great Construction Equipment - if only AC was still around, economically strong and had market share and had a management team that wasn't interested in their own motives.
Respectfully ~ Orangeman
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Steve allis dozer
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Joined: 10 Apr 2011
Location: Australia
Points: 232
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Posted: 01 Jul 2022 at 8:37am |
Hey Mel is that a bull blade made from an angle blade on the yellow tractor ?
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
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Posted: 01 Jul 2022 at 8:42am |
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Mel, stupid question: Purpose? of Holes in AG 11 hood sides??
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wjohn
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Joined: 19 Jan 2010
Location: KS
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Posted: 02 Jul 2022 at 9:09am |
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I can't wait to see that in a crawler.
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1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45
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DiyDave
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Joined: 11 Sep 2009
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Posted: 02 Jul 2022 at 5:53pm |
 DMiller wrote:
Mel, stupid question: Purpose? of Holes in AG 11 hood sides?? |
Just a wild guess, heat houser hardware that is now missing? 
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Source: Babylon Bee. Sponsored by BRAWNDO, its got what you need!
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AC Mel
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Joined: 23 Jan 2010
Location: N.Ca.
Points: 1186
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Posted: 05 Jul 2022 at 3:42pm |
Steve.....YES!......I was hoping someone would notice....but I wasn't going to try to explain it without some interest. We've probably had this tractor for over 10 years. We did notice the blade configuration a day or so after we got it back in our yard. It looks like some one used an 11 angle blade moldboard and the C frame.....and then totally fabricated the rest of it into a straight tilt blade
So it looks like they cut the C frame off where it was still straight....maybe added some more straight tube...then welded the moldboard hinge brackets....one to the moldboard and one to the push beam....they also added a piece at the corner for the bracket to be welded to. They had to weld the diagonal brace brackets on They welded other pieces and spacers for the lift cylinder brackets They did find a straight blade tilt cylinder. I have no idea where they found all the parts....must have come of a dealers shelf. Defiantly professional grade welding....and lots of it! It appears they started with an angle blade mold board....they cut it down so the final width would be 9'6'' like a 11 straight blade So it has a 2 spool valve....with a diverter valve...it has rippers too. So.....somebody went to a hell of a lot of work to build this!! If we do get the hydraulics switched over to the other tractor...we have a extra regular 11 straight blade we would use.
Dave the holes in the hood are for brush guards....even though this was a farm tractor. It seems like those showed up in some of the later model E 11s. EPs seem to have them for logging. They were hard to find....we couldn't find any that were original for this hood. We had original ones from the 1956 HD11s which were very similar...but did not attach to the hood  By the time you got to the 11B series you were totally on your own...we've built several different versions.
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
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Posted: 05 Jul 2022 at 4:49pm |
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Very cool Mel!!
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HD6 Merv
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Joined: 03 Aug 2010
Location: New Zealand
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Posted: 06 Jul 2022 at 2:36pm |
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Cheers for all that explaining Mel. I had missed that about the blade. Was a very keen man who did all that work converting that blade, and profesionally done.
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tits tyres and tracks
they all cost you money
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Steve allis dozer
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Joined: 10 Apr 2011
Location: Australia
Points: 232
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Posted: 07 Jul 2022 at 9:12am |
Thanks Mel for the Blade pics , sure is a lot of welding on that blade set-up , nice job
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Steve allis dozer
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Posted: 07 Jul 2022 at 9:21am |
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Looks like they used a lot of brackets and fittings off an original straight blade
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shameless dude
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Posted: 11 Jul 2022 at 7:32am |
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Mel....you spose that engine would fit my "pretty machine"? thanks for posting again, i always enjoy your endevers and pics!
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shameless dude
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Posted: 12 Jul 2022 at 3:32pm |
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WOW!!! i just thoughts of something....you can use that new to you dozer to pile up firewood to cut!
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Calvin Schmidt
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Joined: 11 Sep 2009
Location: Ontario Can.
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Posted: 17 Jul 2022 at 11:29am |
The 685 engine was used in the Gleaner N7 combine
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Nothing is impossible if it is properly financed
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