Farm Equipment - Hydraulic pump for Model C

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Hydraulic pump for Model C

Printed From: Unofficial Allis
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=18478
Printed Date: 18 Jul 2025 at 8:16am
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Topic: Hydraulic pump for Model C

Posted By: RON P
Subject: Hydraulic pump for Model C
Date Posted: 19 Sep 2010 at 8:20pm

I have just purchased a Model C without hydraulics. I plan to add a three point hitch.

I am unsure on where the pump was mounted.

Replies:

Posted By: GregLawlerMinn
Date Posted: 19 Sep 2010 at 10:02pm

The pump is mounted on the rear pumpkin and is driven off the PTO shaft. The Allis pump is Hi-Pressure, low volume; especially the one that came with the C. Pump is the same same the B series Allis.

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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

Posted By: CTuckerNWIL
Date Posted: 19 Sep 2010 at 10:19pm

I don't know about the C, but some of the early B's that didn't have hydraulics, didn't have the cam lobes on the pto shaft to run a hydraulic pump. You might want to pull the plate off (under the seat) where the pump bolts up and see if there are cams on the shaft.

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Posted By: RON P
Date Posted: 20 Sep 2010 at 3:05pm

Thanks for the info will check for the lobes.

Posted By: Bill Long
Date Posted: 20 Sep 2010 at 8:27pm

Ron, If you have a very early B yes as Charlie says you will first need to upgrade your PTO/Belt pulley. You can easily see if you have the lobes without removing the cover. Look and see if it is a small round cap with no bolts or if it is a square cover bolted on it will have lobes. If that is the case all that is needed is a pump, ram, and if you wish to have a two way plow a LH ram and a selector valve and some plumbing. You may find this on the vendors who advertise here or you can check on e-bay under Allis Chalmers. Sometimes one pops up.

Good Luck!

Bill Long