carrier bearings went south w/ pics any ideas why?
#1
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carrier bearings went south w/ pics any ideas why?
I replaced my carrier bearings after noticing they were bad after doing a gear swap. This is by far the worst of the two. It looks like just one of the roller bearings went bad and that's what caused most of the damage.
Here is what think may have caused them to go bad:
- when they installed my 4.10's a few years ago they may have over tightened the studs on my TA girdle that put pressure on the bearing caps
- or just some real crappy bearings...has anyone heard of "KOYO" bearings??
I replaced them with a set of Timken bearings and races.
I don't know why they got like this, any ideas?
Here is what think may have caused them to go bad:
- when they installed my 4.10's a few years ago they may have over tightened the studs on my TA girdle that put pressure on the bearing caps
- or just some real crappy bearings...has anyone heard of "KOYO" bearings??
I replaced them with a set of Timken bearings and races.
I don't know why they got like this, any ideas?
#3
TECH Fanatic
I say it was an assembly issue...... probably a combination of too much pre-load, debris in the housing and having the outer races at an angle when the carrier was loaded into the housing. It could also be a bearing alignment issue.
Koyo's are Asian OEM bearings. I have them in my chase truck which has 320K+ miles on it and it hasnt failed the four 1000 or three Baja 500's it has been in. I would not blame it on the bearing just yet, as I have put Koyo's to the test.
But in comparison, I would use Timken's if they made replacements for the Koyo's in my application..... but they dont. Timken is the bearing of choice.
Koyo's are Asian OEM bearings. I have them in my chase truck which has 320K+ miles on it and it hasnt failed the four 1000 or three Baja 500's it has been in. I would not blame it on the bearing just yet, as I have put Koyo's to the test.
But in comparison, I would use Timken's if they made replacements for the Koyo's in my application..... but they dont. Timken is the bearing of choice.
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#8
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I dont see any blue arond the races which is odd but Im with scott looks like a bad heat treat...maybe the surface was too hard and became brittle maybe a little micro welding ...I had a Ring and pinion from motive a few years back that was made out of the wrong steel made in India go figure..after extensive testing by a lab it was determend to be made out of the same steel as Grade 5 unheat treated bolts.There are so many variables in MFg that sometimes you'll go crazy tryin to figure something out and you should accept you got some bunk parts..