Farm Equipment - B-C OIL PUMP

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B-C OIL PUMP

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=45774
Printed Date: 30 Oct 2025 at 10:36pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: B-C OIL PUMP

Posted By: 1946WP
Subject: B-C OIL PUMP
Date Posted: 17 Feb 2012 at 8:03pm

ANYBODY HAVE A GOOD WAY TO TEST A B OR C OIL PUMP BEFORE INSTALLING IT IN THE TRACTOR?

Replies:

Posted By: MNLonnie
Date Posted: 18 Feb 2012 at 12:26pm

Here is what I did Bruce. Took a piece of 3/8 rod and cut a notch in the end so it fits into the pump like the cam shaft does, then put the rod in the drill and spun the pump while it was submerged in the parts washer and fluid shot out the pipe on the top. I assume that means it's working but I won't know until I split my C and install it. Need to spin it counter clockwise. My pump won't hold a prime so hopefully this one will.

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Waukesha B, B, IB, G, styled WF, D15, 615 backhoe, 2-Oliver OC3's, 4 Ford Model T's, 3 Model A Fords, AV8 Coupe, AV8 Roadster, 1933 Ford Wrecker

Posted By: steve(ill)
Date Posted: 18 Feb 2012 at 12:56pm

quite often a pump that wont hold prime is loosing its suction due to a leak. Think of a well pump that is running. Shut it off and you hope it holds prime. Poke a hole in the line, have a thread leaking, or bad check valve on the foot... and you loose prime. Look for similar problems in your oil line.

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Like them all, but love the "B"s.

Posted By: norm[ind]
Date Posted: 18 Feb 2012 at 3:55pm

inspect it while it is out!!!! possibly a bad relief ball just had one with a bad one

will know if checked replace the ball