[AT] Allis Chalmers ED40 3 point hitch

[Cecil Bearden]

David Brown was a good solid reliable tractor.  When Iw was working at 
the tractor shop in the 70's while going to college we had 2 David Brown 
tractors on rental service.  They would be out for months at a time and 
still in good shape when they came back. There was an apartment building 
boom in the late 60's early 70's and a company would rent our tractor 
and loader to clean up around apartment sites.  We had both an 880 and 
990 Brown running with a front loader.    We had a clutch problem after 
about 1500 hours on loader use with the 990.  The mechanic who first 
worked on the tractor sent the flywheel out to be resurfaced when he 
replaced the clutch..  I very rarely grind a flywheel.  When the tractor 
was sent out, it came back in a week with the clutch out.   When I came 
in from college for my 3 day work weekend, I was given the tractor split 
and the clutch out of it.  I replaced the clutch disk with a ceramic 
button type and a new pressure plate.   It went out 2 weeks and back 
again.   I started doing some measuring and found that the flywheel was 
ground,but the pressure plate was recessed in the flywheel and the 
mounting bosses had not been ground.  We had a big 30in swing lathe in 
the machine shop and I cut the mounting bosses down about .125  
installed the old pressure plate and used the ceramic button disk 
again.   I saw the tractor again several years later it had 5000 hours 
on it and no clutch problems.

If Case and David Brown had not merged, David Brown may have had better 
sales in the US.  The ag downturn and all the other economic things just 
hit David Brown and Case like the others......
Cecil

On 2/2/2020 1:50 PM, Thomas Martin wrote:
> Hi James
> Last century, the foreman mechanic at the local David Brown dealership
> owned a Ferguson-Brown, when he migrated to Canada, it disappeared,
> I think it went for scrap! :-(
>
> David Brown was very strong locally, being an large orcharding area,
> PTO performance was in demand. DB always out-performed both MF & Ford in
> driving PTO driven orchard sprayers.
> The drag of MF & Ford having the PTO shaft running in oil, was detrimental
> when getting maximum % of flywheel HP to the PTO output shaft. SAME scored well for
> the same reasons as DB.
>
> Thank your friend for the favourable tick! :-)
> BTW We have three islands bigger than the Shetlands...
>
> Tom
>
>> On 03 February 2020 at 07:25 James Peck <jamesgpeck at hotmail.com> wrote:
>>
>>
>> Tom, I got your response confirming that the ED40s sold in New Zealand were 3 point hitch.
>>
>> The first three point hitch tractor, the Ferguson-Brown type A, was manufactured in the UK. I do not know if it was patent protected. By walking away from that joint venture, Harry likely put some of the 3 point hitch into the UK public domain. When he got all the US three point hitch patents for the 9N, that mainly served to keep US based manufacturers from using it gratis. Maybe Ford broke off the joint venture in the US with Ferguson thinking that they would walk away with the intellectual property like David Brown did.
>>
>> The similar situation is that International was making three point hitch tractors in the UK while IH was making Fast Hitch in the US around the same time.
>>
>> With the overwhelming dominance of the TE20 in the early fifties in the UK, it made little sense to try and introduce any other hitch system there.
>>
>> I had a co-worker who travelled to New Zealand to perform a machine tool CNC control upgrade some years ago. He reported favorably.
>>
>> I was at a performance around 15 years ago that included a  performer who had emigrated from Shetland to New Zealand and said NZ was a migratory pattern destination for them. Well New Zealand has two islands both bigger than Shetland.
>>
>>> James AT List Member (jamesgpeck at hotmail.com); I think what you are saying is that Allis Chalmers was building UK tractors with 3 point hitch while they were building US tractors with snap coupler.
>>>
>>> Thomas Martin AT List Member (tmartin at xtra.co.nz); As I remember, the 3 point linkage handrails was a self-contained housing that bolted to the rear center casting. Cylinder was internal, iirc.
>>>
>>> James AT List Member (jamesgpeck at hotmail.com); Does a single cylinder lift the snap coupler arms?
>>>   
>>>   https://www.allischalmers.com/forum/search_results_posts.asp?
>>>   
>>>   Thomas Martin AT List Member (tmartin at xtra.co.nz);  <snip>  My
>>> memorable  moment with an ED40 was when driving a new one to the local
>>> show with  a mounted rotary hoe, an O-ring failed dumping the hoe on
>>> the tar-seal  and showering me in oil!  <snip>
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