Car in bits again...
AO Silver Member
Join Date: Feb 2007
Location: Hampshire, UK
Alfasud Wheel Bearing Question
Hi guys - I've just had a new set of new Alfasud wheel bearings pressed into my rear suspension uprights. The old ones were howling like crazy; saturated with grease, and with no perceptible play, the noise was louder than the engine, and that's saying something!
When I rotated the wheel by hand, the bearings felt "lumpy". I had some issues to start with the torque settings (didn't use enough), and also I neglected to seal around the triangular plastic outer ring which may have allowed the grease to leak out when hot. So this time I was going to do it right.
I got the bearings from All Cars All Parts online. They are made by SKF and come with two new grease slip seals and a sachet of bearing grease. The outer race presses into the upright and retains the inner bearing. The outer bearing is loose. Before I fitted the outer bearing and sealing ring I greased the inner bearing and then put the outer bearing onto a bead of grease. I used silicone RTV on the sealing ring this time (I found evidence of the same on the old 'Sud uprights I took apart). Nipped up the three securing screws on the outside, tapped in the hub and tightened the hub nut (spring balance and a 3.5 foot extension on my special hub nut tool), staked it in place and tapped in the new inboard slip seal.
The uprights were back on the car Friday night, and I drove the car into Petersfield yesterday to catch up on the shopping I didn't do in the snow last week (8 miles round trip). After hitting about 60 mph the bearings started squeaking. When I drove back at a more steady 50 mph they were OK. And this morning, on the way to the No Name for the AROC area section Christmas lunch, they were fine, but on the way back, just a few hundred yards from home, they started squeaking again - only quietly you understand, and not all the time, but still noticeable.
Is there some sort of running-in procedure I should be using for the new bearings? I emptied all of the grease from the supplied sachets into each bearing, and rotated the hub several times by hand to distribute the grease. Is it too cold? Should I play a heat gun over the uprights? Jack the wheels up and run them in gear without any load for a bit?
Wait until Spring????
Any advice would be greatly appreciated.
Alfanauts are GO!!!