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Cam bearing failure -- Prevention
Posted: October 16th, 2010, 6:03 am
by unlimitedrubicon
Check this site out -- fourth post down
http://www.cadillacpower.com/forum/view ... 85&start=0
It seems the Durabond / Clevite bearings need some 'massaging' after installation with a deburring tool.
Re: Cam bearing failure -- Prevention
Posted: October 16th, 2010, 6:08 am
by unlimitedrubicon
Re: Cam bearing failure -- Prevention
Posted: October 25th, 2010, 11:31 pm
by Muad'Dib
Surprised no one has responded to this.. seems like good information.. and a possible problem some people have been running into?
Re: Cam bearing failure -- Prevention
Posted: October 26th, 2010, 8:24 am
by dwg86
I wonder if cam bearings can be ordered from the dealer at a resonable price?
Re: Cam bearing failure -- Prevention
Posted: October 26th, 2010, 9:02 am
by SilverXJ
Jeep part numbers:
J3205711: 1972(4.2)-1998:
4636985AB: 1999-2002; oiling groove in #1 bearing for later camshaft with thrust plate
J3208985: .010" Over sized; not sure if these are really oversized(OD) or undersized(ID)
Most aftermarket Jeep 4.0L bearings are made by Durabond. If there is a heart stamped on the back side its Durabond. That includes Clevites. ACL doesn't make an aluminum bearing for our engine.
Re: Cam bearing failure -- Prevention
Posted: October 27th, 2010, 8:22 am
by SilverXJ
SilverXJ wrote:
J3205711: 1972(4.2)-1998:
4636985AB: 1999-2002; oiling groove in #1 bearing for later camshaft with thrust plate
Both of those numbers now go to 5174428AA which can be had for $53.20 through Wyckoff Chrysler
Re: Cam bearing failure -- Prevention
Posted: October 27th, 2010, 6:44 pm
by IH 392
That is a chin scratcher!???, in the IH circles the OE bearings are notorious for flaking apart, and the "ONLY!" replacement is the DURABOND???, all others are to be avoided.
I wonder if the install tool, or installer? may have something to do with it??, my dad's tool is a SnapOn, and it's a POS!, mine is a DURABOND and it's far superior to the SnapOn, and some guys don't have the word "fineness" in their vocabulary!, all they know is a bigger hammer!