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Noisy NSR hub


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Hi all, can anyone offer advice on this problem?

During a routine service my dealer identified a 'loose' NSR hub bearing. There was no noise from the bearing just a slight rocking of the wheel. I changed the bearing using a Timken bearing from my local auto factor.

Now here is where the problem starts. I now had a noise from the hub. It was an intermittent drone (brrrr brrrr brrrr) which speeded up on right hand bends and became continuous on left hand. Having had nightmares about possible diff problems and stuff I decided to go for the cheap and obvious option and change the bearing again.

I still have the droning noise but now it is constant and not affected by bends. I have listened to both hubs with the car on jacks, supported under the uprights and ticking over in fifth gear. The OS hub is silent, the NS hub is noisy. I removed the speed sensor and the brake pads but there is no difference.

Assuming the bearing is OK (surely I can't have got two duff bearings in succession) the only other moving part is the driveshaft. As far as I can tell the gaitor is undamaged.

Could it be a driveshaft? The shaft is almost straight so there is little movement in the joint whilst it is spinning, and anyway, why would the noise be different after changing the bearing?

Your thoughts gentlemen please!

Chris

1999 V8GT, 33400 miles.

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Have you/dealer checked the torque on the hub nut - it is meant to be a monster 200 ft/lb - also the nsr has an annoying habit of coming undone becuase it is a standard clockwise thread and the only thing securing the nut is a bit of nylok.

When you changed the bearing did you change it all, including the pita to get off outermost race on the hub?

Hey, can anyone smell fuel?????

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