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977.3Ford 
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Joined: 04 Oct 2019
Location: Dayton, Ohio
Points: 99
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 Topic: 426 bearing questions
Posted: 14 hours 13 minutes ago at 7:43pm |
Had a post the other day about my 8050 throwing a rod, ended up finding a deal locally on an engine out of a late N6 with 4500 hours. I pulled a main and rod cap off last night, they show some wear, nothing too crazy though. Need to get this engine back in ASAP, but i'd like to roll new bearings in while the pan is off. Rod bearings and bolts seem pretty straightforward, the main bearings have me a little confused. From reading around it looks like to use new bearings i would have to drop the crank and plug the holes in the block, but i've seen a couple posts talking about just replacing the bottom shells and leaving the tops in. Given how these bearing looks, is that the way to go?
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Jimmy
1982 8050 Powershift
1982 6080
1992 R52 Gleaner
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DrAllis
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Joined: 12 Sep 2009
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Posted: 11 hours 41 minutes ago at 10:15pm |
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If it was mine, bottom shells is all it would get.
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NEVER green
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Joined: 28 Feb 2013
Location: MN.
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Posted: 2 hours 2 minutes ago at 7:54am |
I have gone that route a couple times.
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2-8050 1-7080 6080 D-19 modelE & A 7040 R50
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SteveM C/IL
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Joined: 12 Sep 2009
Location: Shelbyville IL
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Posted: 1 hour 44 minutes ago at 8:12am |
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That main looks really good especially if it's got all those hours. I agree with just replacing lowers. What's the date on the back?
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tbran
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Joined: 14 Sep 2009
Location: Paris Tn
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Posted: 1 hour 6 minutes ago at 8:50am |
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Yup, also I would definitely go back with ARP rod bolts thru Agco. It probably doesn't apply here, but there was also a bulletin about reversing the slotted rod brg / rod position - do you remember anything about that Doc ?
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When told "it's not the money,it's the principle", remember, it's always the money..
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DrAllis
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Posted: 33 minutes ago at 9:23am |
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Yes. On older engines with 4-rings pistons, you are to turn the conn rod 180 degrees when reassembling. So, any of the 4-ring/small piston pin engines pre-8000 series this applies to.
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HudCo
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Joined: 29 Jan 2013
Location: Plymouth Utah
Points: 3897
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Posted: 14 minutes ago at 9:42am |
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is thier anything about rod and main bearing changes in the knowlage section might be good to have those service bullitins thier be cause that gets confusing if you are turning rods backwards and plugging oil holes an older manual my not show the correct changes
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