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hi phil,
great information. here's the bearing number. i found this skf bearing number with clip/snap ring, skf 6306 nr (72x30x19 mm3). volvo's bearing, p/n 1377098, appears to have a metal sealed back.
installed is the ntn bearing. i don't believe volvo used these as oem, so someone has replaced these bearings before.

yes, the polyamide cage is toast, but no issues with any of the rear bearings, luckily. i thought about how to upgrade the bearing, metal cage or something, but i'm not going to go that far. once i do this the first time, i can replace stuff the next time. i came across a lot of chinese bearings claiming to be skf, etc, of course cheap knockoffs, not getting close to my cars.
the car is from the northeast originally. i found some stuff in the car. rust has eaten through the bottom and i presume the driver had water inside the carpet. yes, i could tell the car was not well-maintained, by everything in the car. i think what brought the car down was a bent control arm, which i thought was cracked, but only folded after taking a second look.
the clutch must have gotten really hot to melt the bearing cages, but only in the front. sticky clutch residue was inside the flywheel rim. everything else looked ok (junkyard tranny).
i received my front countershaft bearing, but it doesn't have the groove for the clip, so i'll have to take it to a machine shop to cut the groove and reuse the clip.
i'll pick up my resurfaced flywheel tomorrow.
with the right sourcing of pullers, i think i can pull the two front bearings out without pulling the shafts out. pressing them in is another hurdle, but checking on youtube to see how others did it. i may have to take it to the machine or tranny shop to press them in with a big bearing press that can fit around my tranny.
thanks for the insites, any experiences are well received, since i haven't had a personal car with a stick since about 1990.
regards,
byron
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