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Oliver 1855 main and rod bearing size
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Johndeere 6000
Posted 10/30/2021 19:02 (#9296295)
Subject: Oliver 1855 main and rod bearing size


I’ve got my Oliver 1855 with the oil cooler apart and I have the pistons and sleeves out and ready to order parts and I need to know what size rod and main bearings to get I left the crank and rods alone but I don’t know if someone else has had the crank milled or if it’s still standard size so does anyone know what size standard bearing come in it so I can measure mine and see thanks I appreciate it god bless
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olwhda
Posted 10/30/2021 19:14 (#9296315 - in reply to #9296295)
Subject: RE: Oliver 1855 main and rod bearing size


Liberty, MO		Lots of Oliver 1855 Help on Yesterdays Tractors The Oliver Forum. Lots of improvements been made to those engines in the past many years.

Edit;; many years ago I think my uncle ,who rebuilt engines stamped the crankshaft when he turned a crankshaft, .10, .0.20 or .0.30... I’m thinking he never turned a crankshaft more than 0.30’ s. The rod and mains should be marked on the backside too.

Edited by olwhda 10/30/2021 20:52
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Neb. Nick
Posted 10/30/2021 20:12 (#9296423 - in reply to #9296295)
Subject: RE: Oliver 1855 main and rod bearing size


east central NE.		Unless I am missing something , the old bearing should have the size stamped on them.
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DrAllis
Posted 10/30/2021 20:52 (#9296506 - in reply to #9296423)
Subject: RE: Oliver 1855 main and rod bearing size


As a rule, the backside of each bearing shell will be stamped STD or .010" .020" etc.
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Johndeere 6000
Posted 11/12/2021 19:09 (#9317553 - in reply to #9296423)
Subject: RE: Oliver 1855 main and rod bearing size


Yes they do I appreciate it
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dmax2001
Posted 10/31/2021 05:53 (#9296773 - in reply to #9296295)
Subject: RE: Oliver 1855 main and rod bearing size


Lawton MI		If you’re rebuilding the engine you really need to mic the crank journals. Even if you know what bearings came out, the crank probably has some wear and may need to be turned. Take the rotating assembly to a good machine shop, have them check everything and they can order your bearings.
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hillfarmer
Posted 10/31/2021 06:05 (#9296780 - in reply to #9296295)
Subject: RE: Oliver 1855 main and rod bearing size



how did you get the pistons out and leave the rods on the crank

if the rods are out spin out a bearing and see what is stamped on the back

some people hate "plastigauge " some live by it
will show the wear on the rod surface
then take out a main cap just one at a time

and check what is stamped on them
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jd7520
Posted 10/31/2021 11:24 (#9297365 - in reply to #9296295)
Subject: RE: Oliver 1855 main and rod bearing size


West Central IA		Also while you are doing this, make sure the rod cap bolt holes are chamfered. This has put many a mechanic in a tough spot after the work was completed. In fact that is why many Waukesha engines became ventilated.
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