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Case Tractors Discussion Forum
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1947 Case VAC

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TheShoutingGrounds

10-23-2020 08:48:04




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Hey all, I am new to this tractor and new to the forum.
Ive got a beautiful 1947 Case VAC that I am just beginning to learn about.

My first question is this... it seems to turn very hard while trying to start, it has excellent compression, and I noticed that the radiator fan is turning all the time. Is this normal or should the fan be controlled by a thermostat like in a modern car engine?

My second question: there is quite a bit of play in the steering. I can turn the wheel probably 1/4 turn before the long link arm on the side even moves. Is there an easy fix to this?

Third: it will pop out of reverse gear if I dont hold it down. Any thoughts?

Thanks for all you replies and help in advance.

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Jal-sd

10-23-2020 13:45:26




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 Re: 1947 Case VAC in reply to TheShoutingGrounds, 10-23-2020 08:48:04  
If you have not noticed, your VAC probably does show a lot of oil pressure. That is normal, after warmed up, the engine is only designed to produce about 15 psi. It's engine is a low pressure high flow design. They are a tough little tractor and develop almost as much HP as their big brother the SC, but have less weight and subsequently less traction. I have both an SC & a VAC & like both of them.

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tomturkey

10-23-2020 12:49:54




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 Re: 1947 Case VAC in reply to TheShoutingGrounds, 10-23-2020 08:48:04  
The gear in the transmission that controls reverse is worn down. Its correct name is the "reverse idler gear". It is worn from the previous owners forcing the gears to mesh before the corresponding gears had stopped or at least slowed down when putting the tractor in to reverse gear. There is also a brass bushing that the gear slides on, it could be worn out also. It is an easy fix even for a rookie. But you must find a replacement reverse idler gear and or bushing from a salvage yard or parts tractor. You will be able to hold it in reverse for a while, but sooner or later you will not be able to use reverse as it just won't stay in gear. A contributing factor to your problem could be that it is low or empty of gear oil from a leaky axle seal or transmission gasket or seal. So check that out. Welcome to the forum. Welcome to the world of J.I.Case tractors. gobble

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Joe (Wa)

10-23-2020 12:43:58




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 Re: 1947 Case VAC in reply to TheShoutingGrounds, 10-23-2020 08:48:04  
The likely reason for not staying in gear is wear on lock mesh balls, weak lock mesh springs and/or worn rail lock mesh detent in the shift rail. In an old tractor it can be a combination of all three. Replace the balls, check or replace springs, dress up the rail detent.

Joe

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Joe (Wa)

10-23-2020 14:46:06




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 Re: 1947 Case VAC in reply to Joe (Wa), 10-23-2020 12:43:58  
I forgot to mention a bent reverse fork can cause the gears to not fully engage and jump back out under load. I haven't run into the reverse idler gear problem that tomturkey described but can well imagine that happening.

The link below is an on-line pdf VA operators manual for VA series tractors built prior to 1949.

Joe

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Bob Bancroft

10-23-2020 09:15:46




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 Re: 1947 Case VAC in reply to TheShoutingGrounds, 10-23-2020 08:48:04  
I found a washer bent on the bottom of the steering wheel shaft, after pulling it out of the steering gear. Fixing that helped a lot.



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TractorTucker

10-23-2020 09:01:35




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 Re: 1947 Case VAC in reply to TheShoutingGrounds, 10-23-2020 08:48:04  
The radiator fan will turn all the time because it is driven by a belt off of the crankshaft. I would suggest getting a service manual and owners manual for the tractor to help you keep it running and fix any problems that might show up. Your tractor should have a thermostat in one of the radiator hoses. It might have been removed at some point in the past, if you have problems getting the tractor up to operating temperature, I would suggest checking and possibly replacing the thermostat.

Link to online parts catalog for Case VAC
https://www.mycnhistore.com/us/en/caseih/na/tractors/agricultural/legacy/case-titan-tractors/cn/AEE26496-EFBE-E111-9FCE-005056875BD6

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Bob Bancroft

10-23-2020 09:17:39




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 Re: 1947 Case VAC in reply to TractorTucker, 10-23-2020 09:01:35  
I got good gauges and a 180 degree thermostat from John Saeli for mine.



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