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Allis Chalmers Discussion Forum
:

Difference between C and CA

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rkr29kracing

10-02-2007 06:04:01




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Does anyone know the difference between an Allis Chalmers C and a CA?

Thanks




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steve(ill)

10-03-2007 19:02:00




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 Re: Difference between C and CA in reply to rkr29kracing, 10-02-2007 06:04:01  
the C does have a pto engage lever on the right side, below the seat and the hydraulic lever mounted to the seat frame. it also has a small hydraulic pump and had a angle iron frame on the fenders to hold a big plywood seat cushion.---- the CA has a lever on the RIGHT AXLE to clutch the alxe shaft drive on and off. the CA has a pan seat, 4 speed trans, sheetmetal floor above the transmission, spinout rear wheel rims, etc.

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LenND

10-02-2007 18:38:43




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 Re: Difference between C and CA in reply to rkr29kracing, 10-02-2007 06:04:01  
Did the later C's have factory hydraulics like the CA or didn't any C's have hydraulic?



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cbp

10-02-2007 20:43:53




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 Re: Difference between C and CA in reply to LenND, 10-02-2007 18:38:43  
A C would have the hydraulics just like the B when equipped with hydraulics. A CA had larger pump like the WD. Both are piston pumps and high pressure systems but the C (when equipped) would have a small two piston pump.



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LenND

10-03-2007 19:04:11




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 Re: Difference between C and CA in reply to cbp, 10-02-2007 20:43:53  
Hi!! My Dad bought a new C in 1942 and at that time they had no hydraulics. Sure was a nice tractor for me to learn to run



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Mr. Bob

10-02-2007 06:57:07




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 Re: Difference between C and CA in reply to rkr29kracing, 10-02-2007 06:04:01  
CA has 4 foreward speeds; C has 3. CA has spinout wheel adjustment; C does not. CA has a form of live pto via lever on right axel housing; C does not.



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rkr29kracing

10-02-2007 11:02:53




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 Re: Difference between C and CA in reply to Mr. Bob, 10-02-2007 06:57:07  
It is possible that I have a combination of both? I have a pto lever on the right fender to engage/disengage the pto. However, the transmission is on 3 speed forward/1 back.

Thanks for the information



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Mr. Bob

10-02-2007 11:06:20




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 Re: Difference between C and CA in reply to rkr29kracing, 10-02-2007 11:02:53  
I'd say you have a hybred. This should make you a nice strong little chore tractor.



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cbp

10-02-2007 20:39:08




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 Re: Difference between C and CA in reply to Mr. Bob, 10-02-2007 11:06:20  
A hybrid would be nice because of the weight and transmission plus a much more potent hydraulic pump and much larger diameter rams. I never actually looked to see if you could mate a C transmission to a set of CA finals but maybe so, and that would be a great major up aside from the originality issue. The CA is a sweet tractor.

You might check the radiator support too to see if you ended up with a CA or C front. The CA front will have two threaded holes protruding through the grill while the C won't. That would suggest that all that was replaced was the transmission which unfortunately replaces the serial number too. You could still get close on the year by matching the engine number to other C's and CA's. If you look in the registry, it can usually give good clues to that.

Another thing to look for on the front half is a telltale gauge on the steering column. If the front part were a C, it won't have that.

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Allis nut

10-03-2007 00:22:56




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 Re: Difference between C and CA in reply to cbp, 10-02-2007 20:39:08  
You replied that you have a pto lever on the right fender the CA has a hand clutch on the right axle that gives you live power plus it has the small lever that kicks the pto in and out. The C also looks like a B in the back end it has a curved drawbar that bolts on to the final drives while the CA has a drawbar that hooks to the bottom of the transmision housing. Also the C has a seat like a B and the CA has a pan seat with a shock and spring and the CA has a floor pan while the c is wide open.

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