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B Sealed Pilot Bearing

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=130782
Printed Date: 06 May 2024 at 5:52am
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Topic: B Sealed Pilot Bearing
Posted By: 00transamnh
Subject: B Sealed Pilot Bearing
Date Posted: 02 Nov 2016 at 9:52am
I have just completed the engine rebuild on my 1940 B and am realizing that the shop that reworked my crank removed the oil wick. I think I would like to use a sealed pilot bearing and plug the crank hole. Does anyone have a pilot bearing part number to do this?

Is there a direct replacement that doesnt involve machining the flywheel?



Replies:
Posted By: CAL(KS)
Date Posted: 02 Nov 2016 at 9:56am
just get a sealed version of the old bearing or simply measure width, id and od

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Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20

Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15


Posted By: Dick L
Date Posted: 02 Nov 2016 at 10:28am
It's not going to happen! There is not enough room between the inside diameter and the outside diameter to put ball bearings in. The pilot bearing in your flywheel is actually a bushing.  The only way would be to have the flywheel bored for a sealed bearing. 


Posted By: CAL(KS)
Date Posted: 02 Nov 2016 at 10:34am
oops my mistake, i dont have a b.  was just assuming a bearing like wc with a  wick

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Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20

Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15


Posted By: 00transamnh
Date Posted: 02 Nov 2016 at 11:59am
Ok thanks Dick. So that said, what pilot bearing have you folks been using for this conversion?


Posted By: scott in tenn
Date Posted: 02 Nov 2016 at 2:00pm
I bought oil impregnated bronze bushing. Drilled and tapped crank for plug. Has worked fine for me. Scott


Posted By: steve(ill)
Date Posted: 02 Nov 2016 at 4:09pm
I just greased the stock bushing and reused it....not uncommon for old tractors and trucks........ The oil impregnated bushing sounds like a good idea.

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


Posted By: CrestonM
Date Posted: 02 Nov 2016 at 4:21pm
This may sound dumb...I've heard of oil impregnated bushings before, but what are they? How do they work? Do you have to lube them? 


Posted By: Dmpaul89
Date Posted: 02 Nov 2016 at 4:27pm
did a clutch on like a 2002 chevy S10 pickup and they still used bushings in those. i was suprised by that. any way to save a buck


Posted By: Dick L
Date Posted: 02 Nov 2016 at 6:13pm
Originally posted by CrestonM CrestonM wrote:

This may sound dumb...I've heard of oil impregnated bushings before, but what are they? How do they work? Do you have to lube them? 

http://www.mcmaster.com/#standard-red-metal-rods/=14vc5s9" rel="nofollow - http://www.mcmaster.com/#standard-red-metal-rods/=14vc5s9

Click on ----

Self-Lubricating Oil-Filled SAE 840 and 841 Bearing Bronze



Posted By: 00transamnh
Date Posted: 03 Nov 2016 at 12:58pm
Anyone have a source for oil impregnated bushings? I am having a hard time finding them.

Looks like I need a 1-1/8 od x 7/8 id x 1 length


Posted By: 00transamnh
Date Posted: 03 Nov 2016 at 1:29pm
For future reference, it looks like McMaster Part Number 6391K273 is what is needed for an oil impregnated bushing.



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