At 05:22 PM 8/18/2015, diraxel@hush.com wrote:
>I replaced my wheel bearings (A2, A6 + seal 7022S, all from
National (Federal
>Mogul I believe)) before I took on a 680 mile trip. The passenger
side started to
>be noisy after 375 miles, to become a non stopping loud noise. Around 400+
>miles, from times to times, the car started to steer to the right
with an added
>noise. Just a couple of times actually since I quickly deemed this was not
>sustainable and quickly pulled over. .....
>When the bearings were replaced, the tightening torque was checked on
>internet and 2 values were found: 1/4 circle and 1/2 circle. I
think 1/2 circle was
>used.
Eric,
The first comment is, did you repack the bearing? Then if so did you
use a bearing packer and grease gun, or did you do it by
hand? Personally I've always
used a bearing packer and grease gun.
Did you put a lot of surplus grease in the center of the hub? You should.
>Anyway, I got to re-purchase the bearings and replace them. Would you
>have any knowledge about the tightening torque please?
Assuming that you did pack the bearing, I usually take the nut up
snug then back
off 1/2 turn.
From my AMC maintenance manual:
Place the hub assembly onto the spindle and install the outer
bearing. Install the wheel bearing nut and tighten it until the hub
binds while turning. Back off the nut about 1/6 - 1/4 turn to free
the bearing. Install new cotter pin.
So I guess it depends on how tight you originally tightened the nut.
>What I think is odd are the followings:
>- if the bearings were bad / tightening torque wrong, both sides
should have failed
> within the first 60 miles
>- why only the passenger side failed and not the driver? A faulty
> bearing is possible but isn't much probable
As to why it failed, that is a good question. Did you hit a bad pot
hole, or something in the road? It's possible that you over
tightened the nut so when
you back it off, it didn't loosen enough. Or as you said it could have been a
bad bearing. Did you replace the races? It's possible that the race
was scratched
when installing it, especially if you did it with a drift and hammer
instead of with a
press.
John
John T. Blair WA4OHZ email: jblair1948@cox.net
Va. Beach, Va Phone: (757) 495-8229
48 TR1800 48 #4 Midget 65 Morgan 4/4 Series V (B1106)
75 Bricklin SV1 (#0887) 77 Spitfire 71 Saab Sonett III
65 Rambler Classic
Morgan: www.team.net/www/morgan
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