B, C, CA Commonality
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Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=11562
Printed Date: 26 Jan 2025 at 10:15pm
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Topic: B, C, CA Commonality
Posted By: Charlie175
Subject: B, C, CA Commonality
Date Posted: 26 Apr 2010 at 2:40pm
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What items fit each model? From what I can tell most parts are interchangeable, but for instance would a CA carb work on a B? Can the rear PTO unit from a CA work on a B?
I'm not needing anything but it would be nice to know when I run across something if it would work or not.
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Charlie
'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD
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Replies:
Posted By: Glockhead SWMI
Date Posted: 26 Apr 2010 at 2:54pm
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If I remember right....
The only difference other than the front end on the B/C is the width of the final drives. Most parts interchange between models. I belive the PTO stuff will bolt on. Not sure on carbs if it is a direct swap.
I am sure someone will be here soon to tell yta exactly what you need to know!
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Posted By: Dick L
Date Posted: 26 Apr 2010 at 3:05pm
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You can use the MS carburetor on the B's and C's with some tweaking. The hydraulic pump on the CA has three pistons and the B's and C's have two. I never tried to or measured to try put a CA power take off casting to the B/C transmission. If they interchanged it could be done by changing the complete units. I have two CA's with the engines off out back but have no idea if or when I will get them in to put them together. A lot of switching going on out there so someone might know for sure.
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Posted By: Bill Long
Date Posted: 26 Apr 2010 at 3:26pm
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As said above the B-C are most compatibable with the exception of the front wheel assembly and the wider rear wheels. Basically the C is two row tractor and the B is a one row tractor. Engine, PTO, torque tube, brakes, are basically the same.
The CA presents more of a problem since the rear end is all new with a four speed, constant mesh, transmission, the hand clutch, the operator platform, four plunger tracton booster hys system and different PTO. CA and B-C engine is basically the same with some "tweaking" such as higher RPM's and roto caps on the valves.
Best I can think of from memory.
Good Luck!
Bill Long
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Posted By: Dusty MI
Date Posted: 26 Apr 2010 at 4:17pm
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The B & C transmissions will inter change with the G as well.
Dusty
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917 H, '48 G, '65 D-10 series III "Allis Express"
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Posted By: Rick of HopeIN
Date Posted: 26 Apr 2010 at 4:46pm
Seems like the G had a creeper gear option, does that mean the G creeper gear would fit a B?
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1951 B, 1937 WC, 1957 D14, -- Thanks and God Bless
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Posted By: morton(pa)
Date Posted: 26 Apr 2010 at 5:12pm
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Bill Long you never cease to amaze me at the knowledge you remember from your AC hayday! Thanks for all the great information you provide to us! Keep it up!
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Posted By: wfmurray
Date Posted: 26 Apr 2010 at 5:18pm
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I put ca carb on B .Hole spacing about 1/4in deffernt. Engine wants to surge but with load it smooths out. Little to much fuel.
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Posted By: CTuckerNWIL
Date Posted: 26 Apr 2010 at 5:57pm
A C rad shroud will fit a B, but a B shroud won't fit a C without cutting a notch in the bottom of the left side. You might have trouble swapping steering gearboxes unless you can flip the arm up for a C and down for a B. CA has mounting holes in front for cultivator bracket where C and B don't.
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http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF
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Posted By: Bill Long
Date Posted: 26 Apr 2010 at 7:51pm
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To further the thoughts of a B-C transmission with the G. Yes, the B-C transmission will fit the G, however, the creeper gear is in a housing in front of the transmission with a shifter fork that comes into the gear pattern of the G. I really don't think that particular item would interchange.
Good Luck!
Bill Long
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Posted By: steve(ill)
Date Posted: 26 Apr 2010 at 8:09pm
what you need is a CA 4 speed and pto housing to put on your B final drives. Always wanted a B that is much narrower than the CA, but with the 4 speed and better hydraulics of the CA.
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Like them all, but love the "B"s.
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Posted By: Rick of HopeIN
Date Posted: 26 Apr 2010 at 8:17pm
since it was made over a long period, the B changed quite a bit over the years. Mine was a 51 model, built alongside the CA and WD. It had CA style torque tube with extra cultivator bosses, also starter and throttle setup like CA and bullet light on fender.
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1951 B, 1937 WC, 1957 D14, -- Thanks and God Bless
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Posted By: GregLawlerMinn
Date Posted: 26 Apr 2010 at 8:18pm
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Here is a great reference re: the B, C, and CA. You will need MS Word or equivalent to open:
http://www.frontiernet.net/~garosier/Little%20ACs.doc - http://www.frontiernet.net/~garosier/Little%20ACs.doc
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What this country needs is more unemployed politicians-and lawyers.
Currently have: 1 D14 and a D15S2.
With new owners: 2Bs,9CAs,1WD,2 D12s,5D14s,3D15S2s, 2D17SIVs,D17D,1D19D;1 Unstyled WC
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Posted By: Dusty MI
Date Posted: 27 Apr 2010 at 6:24pm
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The special low/creeper gear housing of the G bolts on where the torque tube of the B & C bolts on.
Will the torque tube of the CA bolt on to the transmission of the B C? Or put another way. Will the transmission and rear end of a CA bolt to the torque tube of a B or C?
Dusty
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917 H, '48 G, '65 D-10 series III "Allis Express"
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Posted By: steve(ill)
Date Posted: 27 Apr 2010 at 8:28pm
yes to all the above Dusty..
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Like them all, but love the "B"s.
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