leaking axle bearings - Impala Tech
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post #1 of 3 (permalink) Old 08-11-2010, 03:57 PM Thread Starter
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leaking axle bearings

I recently replaced both axle bearings on my '64 Impala (300hp 327). The passenger side was leaking so I replaced both the passenger side and driver side bearings since both were original with about 50,000 miles. A few hundred miles later the passenger side started leaking gear lube and shortly afterwards so did the drivers side although not as severly. These are $160 National bearings, not cheapies. They appeared the same as the original bearings and were installed the same. I can't imagine getting two 'bad' bearings although anything is possible. Neither of them make any noise or vibration and both turn as smoothly as a new bearing should.
Has anyone experienced this or have any ideas? I would appreciate any input.
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post #2 of 3 (permalink) Old 08-11-2010, 04:39 PM
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Quote:
Originally Posted by bowtyebob View Post
I recently replaced both axle bearings on my '64 Impala (300hp 327). The passenger side was leaking so I replaced both the passenger side and driver side bearings since both were original with about 50,000 miles. A few hundred miles later the passenger side started leaking gear lube and shortly afterwards so did the drivers side although not as severly. These are $160 National bearings, not cheapies. They appeared the same as the original bearings and were installed the same. I can't imagine getting two 'bad' bearings although anything is possible. Neither of them make any noise or vibration and both turn as smoothly as a new bearing should.
Has anyone experienced this or have any ideas? I would appreciate any input.
Bearings may be of great quality but what are the grease seals like that go on the ends to seal up the bearing. This is usually the part that retails for about $2.00 bucks but costs a few hundred in labor to replace. Once you press off the wheel bearings examine the axel to see if the area that the seal rides on is smooth and bur free without a groove in the axel that will allow the gear lube to leak past the seal. The paper gaskets on the axel tube ends are important as well and need a dab of RTV blue or black to seal up well.

Big Dave
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post #3 of 3 (permalink) Old 08-11-2010, 05:22 PM Thread Starter
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Yeah, those 'o' rings loog pretty ....flimsy(?) Maybe the rtv would help, but it shouldn't be necessary.
Thanks
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