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Ford 2000 Rod Bearing Limits


 
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rwbook@columbus.rr.com
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Joined: 22 Aug 2019
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PostPosted: Fri Aug 23, 2019 5:37 am    Post subject: Ford 2000 Rod Bearing Limits Reply to specific post Reply with quote

Hello,

I've got a 1970 Ford 2000 tractor that just developed a slight rod knock. Got the pan off and would like to plastic gauge the rod bearings in place before deciding what to do next. If it measures within the limits, I might just replace the bearings. If it doesn't measure within limits, I'd have to get a professional do a full overhaul.

Does anyone have the limit or acceptable range on the plastic gauge measurement for the rod bearings?

Any suggestions and advise is welcomed.

Thanks,
Rob
 
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Steve@Advance
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PostPosted: Fri Aug 23, 2019 6:17 am    Post subject: Re: Ford 2000 Rod Bearing Limits Reply to specific post Reply with quote

I don't have the tolerance specs, but Plastigage only tells part of the story.

All it will reveal is what the clearance is, not what is worn.

Good chance the bearings are worn, but the crank also may have wear, especially if it was bad enough to knock.

You can measure the rod journals with a micrometer. Just push the rod up out of the way, take several measurements checking for diameter tolerance and out of round. The journals will wear more across the top/bottom that sides.

A shop manual will be a valuable investment.
 
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John Deere D
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PostPosted: Fri Aug 23, 2019 9:05 am    Post subject: Re: Ford 2000 Rod Bearing Limits Reply to specific post Reply with quote

I had to walk away from an Engine Job two weeks ago. Owner refused the time to properly measure all crankshaft Journals...?.

Be cognizant of the information / advice you receive, and who you receive it from..

Bob..Retired Power Engineer...

 
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Destroked 450
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Location: Harned, Ky.

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PostPosted: Fri Aug 23, 2019 3:12 pm    Post subject: Re: Ford 2000 Rod Bearing Limits Reply to specific post Reply with quote


Rod bearing clearance is .0015 - .004
Unless you've ran it out of oil the crank and bearings on those tractors hardly ever give issues.
The piston pin bushing is another issue in itself, I've torn down a number of these engines that had a wrist pin bushing come lose, most times the bore in the small end of the rod was egg shaped and the rod had to be replaced.
 
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Bob
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PostPosted: Sat Aug 24, 2019 7:05 pm    Post subject: Re: Ford 2000 Rod Bearing Limits Reply to specific post Reply with quote

CVPost-rwbook@columbus.rr wrote:
(quoted from post at 08:37:53 08/23/19) Hello,

I've got a 1970 Ford 2000 tractor that just developed a slight rod knock. Got the pan off and would like to plastic gauge the rod bearings in place before deciding what to do next. If it measures within the limits, I might just replace the bearings. If it doesn't measure within limits, I'd have to get a professional do a full overhaul.

Does anyone have the limit or acceptable range on the plastic gauge measurement for the rod bearings?

Any suggestions and advise is welcomed.

Thanks,
Rob


Dunno for sure what you've got going on with you tractor, and diagnosis over the 'net with the limited info available here is not very useful.

If you know enough about engines to be SURE you have a "rod knock" you will already know that replacing the rod bearings without any further "work" is a very temporary solution, at best.
 
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