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Re: 3 cyl diesel rebuild

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John Deere D

12-10-2013 08:56:59

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I had a look at some of the CASE STUDY Failure investigations that I was asked to be part of from 1971>2011
(1) incorrect bearings Installed on crankshaft (BRGS. were undersize)
(2) Thrust COLLAR was not installed on CAMSHAFT allowing CAM to move FRWD. binding on TIMING COVER
(3) Incorrect CAP SCREWS used to attach timing cover ...cap screw bottomed out against drive gears
(4)BRG. shells were installed incorrectly, anti rotational TABS were not lined up with machined grove in BLOCK (5)insufficient butt clearance on piston rings
(6) carbon had not ben removed from ring grooves properly before installing new rings (7)Person installing all new parts "ASSUMED" parts were correct and never checked anything against OEM SPECIFICATIONS!
(8)Piston WRIST PINS installed with lack of clearance in either PISTON BOSS or SMALL bore of CONN. Rod
(9) Person assembling engine never used Prussian BLUING to verify contact of Crank Journals with BRG.INSERTS...should always do after crank has been GROUND or BLOCK line bored
Please let us all know what your finally done to resolve problem

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