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New to me HD11B

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farmerdev View Drop Down
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Joined: 31 Jul 2022
Location: Utah
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Post Options Post Options   Thanks (0) Thanks(0)   Quote farmerdev Quote  Post ReplyReply Direct Link To This Post Topic: New to me HD11B
    Posted: 26 Aug 2022 at 10:58am
Thanks for all the good points I need to get back out there and work on getting into the brake bands area. I will update when I have it loaded on what the issue was.
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Ray54 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ray54 Quote  Post ReplyReply Direct Link To This Post Posted: 24 Aug 2022 at 12:13pm
I think Mel and other are pointing you in the right direction. If the brake band rusts to the drum it will never roll. 

A old Cat D6 stopped pulling on the one side.  Everything going good, started discing a different field pulling up hill, pulled steering clutch for miner correction, IT STOPPED. Let go of the steering clutch and away it goes. Got it home and parked it, I HAVE TO MANY old tractors I used another one. It sat 6 months moved it to clean up weeds. Six months latter wanted to move it again and it would not roll. I got another D6 hooked up, track would drag but no roll.

Finally got around to opening it up. Band rusted to drum. Got it free. The 40 HP wheel tractor could roll it around the yard just fine.

The original problem was the springs pushing steering clutch plate together to pull where way wore out. Had way less tension than the repair book said.  They should of been pitch the last time the clutch was rebuilt. But it worked for the guy that did it, I had only bought it that way.
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AC Mel View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AC Mel Quote  Post ReplyReply Direct Link To This Post Posted: 22 Aug 2022 at 8:58pm
Ok...I concur with Rob...Hector ..and Dave...all of those are good possibilities. Since I am a betting man...that would be...money...marbles..or chalk..my first choice is the brake bands stuck to the steering clutch drum.  Get under the seat...take the covers off...get out a new dictionary....cause the words you need aren't in the old one...or just make them up as you go. A big hammer and a bar...maybe a cutting torch...will break everything loose. Don't even worry about saving those parts.  "Been there done that" on one of our collection tractors the same year model.  I'll also bet that Hector will have those parts. The next choice...might be the track links rusted up.,,maybeee..   The clutch could be stuck to the flywheel and the engine could be froze up. But you have 2 choices to put it in neutral...the main transmission and the Hi/Low selector.  Dave's wary eye noticed the right brake pedal down...I'd start there...if that's in the locked position....it's not going to come loose very easy.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DMiller Quote  Post ReplyReply Direct Link To This Post Posted: 22 Aug 2022 at 3:25pm
In the photo the Right Brake was ALL the way depressed as if the Parking Brake was applied, did you release that?  And lock back BOTH Steering clutches???
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Post Options Post Options   Thanks (0) Thanks(0)   Quote gemdozer Quote  Post ReplyReply Direct Link To This Post Posted: 22 Aug 2022 at 3:01pm
You could remove the startor and try to turning the motor by the flywell ring gear with a big screw driver and make sure the transmission and hydrolic lever are in neutral fonction and you could desajusted the brake band these could be freeze on drum,
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Codger Quote  Post ReplyReply Direct Link To This Post Posted: 22 Aug 2022 at 2:24pm
are you sure it is the final drives stuck and not either the tracks locked up, or the engine stuck with the transmission in a gear?
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farmerdev View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote farmerdev Quote  Post ReplyReply Direct Link To This Post Posted: 22 Aug 2022 at 1:30pm
Update on this dozer project. I was unable to load it do to the final drives being stuck. Anyone have any ideas on what to do to free them up? If not I will need to get a wrecker out to pick it up. I was able remove the blade and load it on my trailer. Here is a picture of a buddy of mine next to the blade for scale he is 5'10" 

And don't worry there are 4 chains attached to the back of that holding it in place. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CAL(KS) Quote  Post ReplyReply Direct Link To This Post Posted: 15 Aug 2022 at 12:58pm
take measurements on the yokes.  measure bore for joint caps and width across to match it up.  

not likely in parts book as a usable number now


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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Post Options Post Options   Thanks (0) Thanks(0)   Quote danny1954 Quote  Post ReplyReply Direct Link To This Post Posted: 15 Aug 2022 at 12:43pm
HELP PLEASE!! i have a allis chalmers hd9b dozer that broke the u joint for the hydraulic pump at the crank shaft pulley. Cant find any information on hd9b with front mounted hydraulic pump. Need help finding manual and parts. Part # on tag HD-9B-3443 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote R.KYLE Quote  Post ReplyReply Direct Link To This Post Posted: 09 Aug 2022 at 6:37pm
YES THE 471 IS BEST CHOICE I ONLY USED THE 671 BECAUSE I HAD IT AND NEW IT WAS A GOOD ENGINE. ALSO MORE WORK GETTING THE 671 IN THERE.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AC Mel Quote  Post ReplyReply Direct Link To This Post Posted: 08 Aug 2022 at 10:32am
I concur with Cal....keep in mind the year before this tractor was made it was the model HD9...which had the 471.  There are very few changes in the running gear of this HD11 from the HD9. In the early years it was common for the farmers out here in the Sacramento valley to convert back to the 471 when they had engine problems. The 471 would be the easiest swap....if you found one with a turbo..that would make it sweeter.
  Be careful about trying to turn the engine over. Out of all the things that could be stuck...the PSB fuel pump could be one of the things that's holding it back. You don't want to break that....it is made of unabtainium...yes...been there done that.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CAL(KS) Quote  Post ReplyReply Direct Link To This Post Posted: 08 Aug 2022 at 7:10am
would 11B have the early 1/2 bolts on the intermediate pinion cap?  they were a weak point and eventually upgraded to 5/8, so power level considered here.    keep in mind the v series will be more expensive than a 4-71 .  they only ran about 1700 rpm, and a 4-71 will fit easier and definately be cheaper.  I mean you can do whatever you want, i just feel the less complicated the swap is, the more likely it is to be a finished success, and thats what we want is another machine to keep on living.



Edited by CAL(KS) - 08 Aug 2022 at 7:19am
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote R.KYLE Quote  Post ReplyReply Direct Link To This Post Posted: 07 Aug 2022 at 9:08pm
I PUT A DETROIT 671 IN LINE IN A HD11 LIKE YOURS. IT IS A TIGHT FIT AND REQUIRED SOME MODIFACTIONS. TRACTOR IS OVER POWERED BUT USED WITH CARE WORKS WELL.  I USED THE 671 BECAUSE I HAD A HD14 WITH GOOD ENGINE AND POOR UNDERCARRIAGE.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote farmerdev Quote  Post ReplyReply Direct Link To This Post Posted: 06 Aug 2022 at 8:15pm
Thanks for all the information. The pictures of the Dozer are at the property I bought it from. I don't have it picked up yet going out in 2 weeks to get it. If I am unable to get parts for the motor I will probably get a 4-71 Detroit though the 6v-71 is tempting.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mikez Quote  Post ReplyReply Direct Link To This Post Posted: 06 Aug 2022 at 8:00pm
Tim welcome to the forum. Is the pictures of the dozer at your property. See other orange in the background 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Codger Quote  Post ReplyReply Direct Link To This Post Posted: 06 Aug 2022 at 7:32pm
My 11B tractor was rated at 140hp but according to my buddy at the fuel shop, fuel delivery is increased by 15% over stock settings. Mine is power shift however.

A complete AC 10000 series engine is about 2050 pounds complete. A Detroit Diesel 3-71 is 1521 pounds complete. A Detroit Diesel 4-71 is 1780 pounds complete. Power ratings are easily set where needed with most any of them. A 3-71, or a 4-71 would be a good choice for a repower I'd think. A 3-71 did a fine job in an HD7 tractor so a 4-71 should be a good match for the larger tractor. All would be just a bit more power than the original engine. 

If me I'd work with the original ascertaining what is wrong with it before going further. As mentioned, u/c and other major mechanicals need evaluated before going far.  
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Codger Quote  Post ReplyReply Direct Link To This Post Posted: 06 Aug 2022 at 5:47pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Lee Bradley Quote  Post ReplyReply Direct Link To This Post Posted: 06 Aug 2022 at 3:48pm
Probably not as much power as AC put through them later with the turbo'd engines.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ray54 Quote  Post ReplyReply Direct Link To This Post Posted: 06 Aug 2022 at 2:20pm
The tractor in the you tube is still running as far as I know, about 50 miles from me. The video  has comment 13 year old and he only had 160 acres, so not run everyday. Farming is easier than dozer work because you use more higher gears.

So if you realize what the tractor was made to do and treat it with care, most anything that fits size wise. But remember if you break some parts there are no more at the dealership.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote farmerdev Quote  Post ReplyReply Direct Link To This Post Posted: 06 Aug 2022 at 12:19pm
That sounds nice. How much HP can I throw at the transmission and clutches before I break stuff?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Lee Bradley Quote  Post ReplyReply Direct Link To This Post Posted: 05 Aug 2022 at 3:54pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote farmerdev Quote  Post ReplyReply Direct Link To This Post Posted: 05 Aug 2022 at 2:27pm
I am up for anything really I do like the idea of a Detroit in there I have a 2-53 I believe in another JD crawler loader and that thing runs great. Just will have to find one I guess I may even just machine my own parts for this motor if I have to.  
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Post Options Post Options   Thanks (0) Thanks(0)   Quote R.KYLE Quote  Post ReplyReply Direct Link To This Post Posted: 04 Aug 2022 at 7:54pm
IF YOUR UP FOR A CHALANGE A 471 DETROIT WILL FIT IN THERE. PARTS STILL AVABLE.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CAL(KS) Quote  Post ReplyReply Direct Link To This Post Posted: 02 Aug 2022 at 2:29pm
definitely worth the price but the engine and undercarriage condition will be the determining factors.

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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farmerdev View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote farmerdev Quote  Post ReplyReply Direct Link To This Post Posted: 02 Aug 2022 at 2:21pm
Here is a set a pictures that I have.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CAL(KS) Quote  Post ReplyReply Direct Link To This Post Posted: 02 Aug 2022 at 8:08am
Unfortunately no one is making engine parts for these anymore.  I bit of know-how and luck will be required to find parts on someone's shelf.
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote AC Mel Quote  Post ReplyReply Direct Link To This Post Posted: 01 Aug 2022 at 8:11pm
So...Tim....yes what you have is the early version of the 685.  This is the "Lanova" style Buda engine that was first installed in ACs in 1955. The hydraulics also represent the first year.  Looks like a pretty clean specimen. Maybe put up some more pictures of the whole machine. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 01 Aug 2022 at 6:29pm
Not a 1980's model 685-T for sure !!!!    Non-turbo 1950's engine is what I see.
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farmerdev View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote farmerdev Quote  Post ReplyReply Direct Link To This Post Posted: 01 Aug 2022 at 5:25pm
Here are some more images of the engine



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Post Options Post Options   Thanks (0) Thanks(0)   Quote AC Mel Quote  Post ReplyReply Direct Link To This Post Posted: 31 Jul 2022 at 9:43pm
Tim....So the serial number being 799...should be the first year of production 1955. It would have come with a Lonova style engine at that time...the 685T became the last version made. So ...yes JC and Tracy have good ideas where to look.   As I always like to say....post some pictures....engine pictures will help identify exactly what you have....the more pictures the better.
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