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1939 caterpillar D3 information required


 
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Ryankrook
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PostPosted: Thu Dec 28, 2017 11:16 am    Post subject: 1939 caterpillar D3 information required Reply to specific post Reply with quote

Hello guys and gals, so I recently aquired a 1939 D3 and the pup motor needed new crank bearings. I am looking for a service manual or a website to download one from. Also looking for someone who has parts and information.
Model number is posted in the picture.

Thanks everyone for your help!

Ryan
Alberta, Canada
 
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Ryankrook
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PostPosted: Thu Dec 28, 2017 11:20 am    Post subject: Re: 1939 caterpillar D3 information required Reply to specific post Reply with quote



 
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hector gemme
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PostPosted: Thu Dec 28, 2017 12:35 pm    Post subject: Re: 1939 caterpillar D3 information required Reply to specific post Reply with quote

The 7j is a D4 not D3 and am still have some used parts
 
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Jo Bird
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PostPosted: Thu Dec 28, 2017 6:09 pm    Post subject: Re: 1939 caterpillar D3 information required Reply to specific post Reply with quote

Caterpillar D4 Tractor Parts Manual Book Catalog 1939 7J1 on up is available on E-bay for $39.99 along with several other D4 books from that era. Also the ACMOC group ( Antique Caterpillar Machinery Owners Club ) is a good source for information. As far as parts believe it or not some parts are still available from Caterpillar .
 
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Old Magnet
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PostPosted: Thu Dec 28, 2017 8:49 pm    Post subject: Re: 1939 caterpillar D3 information required Reply to specific post Reply with quote

7J1590 is an early 1940 production model
 
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Jo Bird
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PostPosted: Sat Dec 30, 2017 7:11 am    Post subject: Re: 1939 caterpillar D3 information required Reply to specific post Reply with quote

CVPost-Old Magnet wrote:
(quoted from post at 05:49:31 12/29/17) 7J1590 is an early 1940 production model
My books say 1939 serial #'s 7J 1 to 7J 1754 and 1940 serial #'s 7J 1755 to 7J 4110..
 
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Old Magnet
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PostPosted: Sat Dec 30, 2017 9:53 am    Post subject: Re: 1939 caterpillar D3 information required Reply to specific post Reply with quote

Ok, must have read something wrong. The ACMOC s/n reference book says 7J1-1757 as 1939 production. My Cat Performance Handbook says 7J1-1754 as 1939 production.
 
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Ryankrook
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PostPosted: Sun Dec 31, 2017 11:40 am    Post subject: Re: 1939 caterpillar D3 information required Reply to specific post Reply with quote

Jo Bird wrote:
(quoted from post at 11:09:58 12/29/17) Caterpillar D4 Tractor Parts Manual Book Catalog 1939 7J1 on up is available on E-bay for $39.99 along with several other D4 books from that era. Also the ACMOC group ( Antique Caterpillar Machinery Owners Club ) is a good source for information. As far as parts believe it or not some parts are still available from Caterpillar .


The parts manual is just a part number listing correct? Quite different from a service manual.
 
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Ryankrook
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PostPosted: Sun Dec 31, 2017 12:00 pm    Post subject: Re: 1939 caterpillar D3 information required Reply to specific post Reply with quote


I have found some service manuals for a 7G and a 7U. What's the difference between that model and the 7J that I have?
 
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Old Magnet
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PostPosted: Sun Dec 31, 2017 1:39 pm    Post subject: Re: 1939 caterpillar D3 information required Reply to specific post Reply with quote


That 7G is a typo, should read 7J and is the same 4-1/4" bore engine in the 4G, 7J, 2T and 5T.
The 6U/7U is a different 4-1/2" bore engine
 
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