tryon(at)aviator.org Guest
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Posted: Wed Nov 14, 2007 5:10 pm Post subject: Found Cracked Main Gear Axle on CJ. |
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Two things...
-- First, I need a Main Gear Axle for a CJ if anyone has one they want to
sell, new or used.. This was the Left Main, so it has "Right hand thread"
for the retaining nut.. I wouldn't be afraid to use the other one in that
side since the nut is secured with a bolt/locknut anyway.. you can call me
at 770-712-5909 or email to tryon(at)aviator.org
-- Second I wan't to let everyone know that the crack was found after
removal of a very difficult stuck bearing , during annual condition
inspection. the crack was partially under the race and just out from the
flange of the outer dust seal. This was the large outer bearing. I removed
the lower gear leg and pressed out the axle taper pin, then pressed out the
axle. both came out fairly easily.. no heat needed. Further inspection
(NDT) showed the crack went completley around the axle, though most visible
in the front leading edge half. the rest looked like stretch or a rub..
I don't think the crack was any result of the bearing being stuck on the
axle, but just metal stress over time from an unknown # of landings and the
brake pulling on it too.. who knows..
As far as getting the worn out bearing and race off the axle, "this was the
trick.." the rollers and the cage pretty much came off easily as it was
badly worn.. this left the inner race stuck on the axle... I got the entire
brake assy. off and out of the way,, and was reluctant to use the torch to
heat it for safety reasons... too much gas overhead...
tried the puller only to break the flange of the bearing.. So I got a
bearing seperator "Snap -On PN# CJ950" or any 2" to 2 1/4" bearing seperator
will work.. I machined an aluminum plug to go in the axle end to pull
against protecting the axle (not knowing it was cracked). then made a
puller out of two long 3/8" bolts that fit the holes in the bearing clamp
and a piece of steel channel drilled with three holes center hole pinned
to the axle bushing . It generally came right off. just pull evenly with the
bolts.. That's all folks.. I'll try to post pictures of the crack later
if anyone is interrested..
Thanks,, Tryon..
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