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=24887
Printed Date: 24 Feb 2025 at 12:38pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: oil pump
Posted By: 1946WP
Subject: oil pump
Date Posted: 29 Jan 2011 at 7:25pm
has anybody rebuilt an oil pump? I'm not sure what to look for & what replacement parts are available. there are like swirl marks on cover & the cyclinder. I think its ok to to smooth down the swirl marks on cover but not on the pump cycl I can replace the springs & check ball.does anybody have any advice or tips .  some pictures of one oil pump w/ swirl marks Thanks for advice.
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Replies:
Posted By: CTuckerNWIL
Date Posted: 29 Jan 2011 at 7:44pm
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The most critical part of repair would be getting the clearance between the vanes and the housing set right. Probably .002 or less I don't know. If the swirls are removed from the "cylinder" you would have to grind the top plate to make the depth of the cylinder the same as the height of the vanes, then add a .002 gasket for clearance.
------------- 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 |
Posted By: Chalmersbob
Date Posted: 29 Jan 2011 at 9:44pm
| The top plate is to be flat and the clearance is set by using multiple gaskets. They come in different thicknesses. If you tolerance isn't correct you will lose prime in your pump. Bob |
Posted By: CTuckerNWIL
Date Posted: 30 Jan 2011 at 10:42am
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I didn't make myself very clear. If you grind out the grooves in the bottom of the cylinder, then you will have to grind off the top of the "cylinder" to keep the depth of the cylinder the same as the length of the vanes. Yes the top plate should be flat. ------------- 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 |
Posted By: 1946WP
Date Posted: 30 Jan 2011 at 1:40pm
| thanks guys, but how do you check the clearance between the cover & vane with the cover on? do you use a straight edge over the surface & measure clearance, before you put the cover on? |
Posted By: MNLonnie
Date Posted: 30 Jan 2011 at 2:17pm
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Would the plasti-gauge stuff work that you get from the parts store for measuring bearing clearances? ------------- 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: CTuckerNWIL
Date Posted: 30 Jan 2011 at 7:26pm
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Measure the depth of the "cylinder' with a depth mic and mic the width of the vanes. they should be the same. Your gasket sets the clearance. Another way would be to put a straight edge over the "cylinder" with the internals in it. The vanes should be flush with the top of the "cylinder". ------------- 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 |