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John Deere Tractors Discussion Forum
Show Parts for Model:

3020 balancer

Author  [Modern View]
cushman

03-05-2014 18:21:56
71.48.67.119



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Does anyone know how much bearing clearance the 3020 balancer bearings are to have before they need to be replaced? I had a customer bring one in to the shop today to be checked.It has .007-.008,which seems a bit high,but all the service manual says is to rebuild it when it has too much wear.




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cushman

03-07-2014 19:01:29
71.48.67.119



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 Re: 3020 balancer in reply to cushman, 03-05-2014 18:21:56  
Thank you for your comments.After disassembly we found no pin wear,but have the bushings ordered.



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Tx Jim

03-08-2014 03:24:39
69.35.160.126



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 Re: 3020 balancer in reply to cushman, 03-07-2014 19:01:29  
Another thing that makes 3010/3020 used blocks scarce is the limited number of tractors produced with the Waterloo 4 cyl engines compared to other engines.



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Tx Jim

03-06-2014 03:55:39
69.35.160.188



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 Re: 3020 balancer in reply to cushman, 03-05-2014 18:21:56  
Here's the spec's on the bushings(R30784) but no spec's stated on JDparts.com for shafts

Weight: 0.11 LBS 0.05 Kg
Inside Diameter 1.124 IN

Outside Diameter 1.313 IN

Length 1.000 IN



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tomstractorsandtoys

03-05-2014 18:34:58
64.136.27.163



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 Re: 3020 balancer in reply to cushman, 03-05-2014 18:21:56  
Not sure on the wear but whenever I overhaul a 3020 I replace balencer shafts and bushings.When they fly apart they ruin lots of stuff and usually the block.



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Kent Petersen

03-06-2014 16:36:48
209.62.225.173



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 Re: 3020 balancer in reply to tomstractorsandtoys, 03-05-2014 18:34:58  
There were alot of 3010s & 3020s around here years back i have never seen one blow up



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tomstractorsandtoys

03-07-2014 10:07:14
64.136.27.162



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 Re: 3020 balancer in reply to Kent Petersen, 03-06-2014 16:36:48  
Talk to some salvage yards as most 3020 diesels that end up as parts tractors due to engine problems is because the balencer was not serviced. When the bushings wear it will show some viberation and if not fixed usually they destroy the block when they come apart.You see this in high hour tractors.It was not a weakness but something that should be checked at an overhaul,just like oil pumps ect.Good used 3020 blocks are very hard to come by.

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Tx Jim

03-07-2014 04:04:58
69.35.160.125



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 Re: 3020 balancer in reply to Kent Petersen, 03-06-2014 16:36:48  
Quoting Removed, click Modern View to see

Me neither.



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D-

03-07-2014 15:41:28
107.77.68.49



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 Re: 3020 balancer in reply to Tx Jim, 03-07-2014 04:04:58  
Have seen several 3010/3020 engines ruined by balancer. Have even seen them break off usually breaking the bosses off the block.
Other poster is right about finding used block. Next to impossible since the engine usually is what sent them to salvage..



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D-

03-06-2014 04:57:14
166.137.10.15



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 Re: 3020 balancer in reply to tomstractorsandtoys, 03-05-2014 18:34:58  
I agree. Always replace bushings and any shaft wear is too much.



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