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Fiat_noob 
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Joined: 21 Oct 2023
Location: Indiana
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 Topic: Fiat-allis 11B starter oil leak
Posted: 21 Oct 2023 at 9:24pm |
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Just bought a fiat allis 11b. After it is running, it will leak oil around the starter where it mounts to the flywheel housing. My thought is the Venturi pump is plugged but it’s not. Hoses are all clear as well, any ideas where to look next?
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Codger
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Joined: 23 Dec 2020
Location: Illinois
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Posted: 22 Oct 2023 at 5:10am |
Transmission pressure regulator is suspect.
What is the history, and plans for use of the tractor?
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A career built on repairing and improving engineering design deficiencies, shortcomings, and failures over 50 years now.
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Fiat_noob
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Posted: 22 Oct 2023 at 8:49am |
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Would the regulator be set too high or too low? We bought the machine without a lot of history. Previous owner bought it non running, rebuilt the motor and everything. Said last year it started the leak and he didn’t have enough use for it to justify working on it. Plans for the tractor is to use it to push dirt.
Edited by Fiat_noob - 22 Oct 2023 at 8:57am
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Codger
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Posted: 22 Oct 2023 at 9:17am |
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Not a resale item then meaning purchased cheap to repair and resell? Sorry to be harsh sounding but been down that road with others.
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A career built on repairing and improving engineering design deficiencies, shortcomings, and failures over 50 years now.
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
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Posted: 22 Oct 2023 at 9:54am |
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Similar issue with my 7G when got it, torque converter to flywheel region vented into trans fill tube on that, found vents for finals and trans were completely soiled to fully stopped up was that cause on mine.
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Fiat_noob
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Posted: 22 Oct 2023 at 11:52am |
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We bought it from a farmer, to use on our farm for odd jobs. Bought at a good price, yes but I wouldn’t say cheap. It’s not often something comes available that’s affordable but also close enough we can have it moved without much hassle.
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Ian Beale
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Joined: 03 Oct 2011
Location: New South Wales
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Posted: 22 Oct 2023 at 7:00pm |
You need FA FL 10 - FL 10B loader and 10 - 10B dozer Service Manual Print No 604.06.077
The converter is scavanged by a pump which sucks through a gauze strainer in the plumbing back from the converter.
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Codger
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Posted: 22 Oct 2023 at 7:15pm |
Ian;
His tractor is like mine and only Fiat in the lettering. Underneath that lettering is 100% Allis-Chalmers engineering. The 11B, 16B, and 21B series were carryovers from the Allis-Chalmers partnership and were eventually replaced with Fiat designed units.
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A career built on repairing and improving engineering design deficiencies, shortcomings, and failures over 50 years now.
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Ian Beale
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Posted: 23 Oct 2023 at 5:23am |
Codger
Thanks for the correction - this has been worse than "one of those days"!
The service manual recommendation is good for one of those though
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Codger
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Posted: 23 Oct 2023 at 6:48am |
Hey no worries at all!! Happy to see some other participation to help the gent out.
Hopefully he can get this problem sorted and will stick around to let us know how the machine performs in their operation. So many only come around when they have problems and you never see them otherwise.
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A career built on repairing and improving engineering design deficiencies, shortcomings, and failures over 50 years now.
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Fiat_noob
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Posted: 23 Oct 2023 at 8:04am |
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Thank you all. We are going to start by checking the gpm at each check point and go from there. The fluid is building up in the flywheel housing. We checked the drain line T under the torque converter, and both sides pass fluid, so I went to the line that connect to the Venturi pump, it too passes oil.
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Fiat_noob
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Posted: 25 Oct 2023 at 1:31pm |
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Does the flywheel housing have a breather? I can’t find one, and I’m wondering how the suction for the Venturi would work without it.
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