Hi,
I replaced Wheel Bearing on my 240, driving feels are totally normal and nice. But now I started to thinking little over heat on bearing, hub?.?.

Air temperature was about 85 Degree F.
Drove on highway(60-70 M/h) and local road total for 15 miles.
I check hub cap,. It's really hot when touched by hand.
It was 150 F degree, maybe it's not bad..?

I followed Bentley manual: Tighten the nut to 55Nm (41 ft lb) slowly turning the wheel. Loosen 1/2.


I am writing this now and saw manual agin, they also mention one more section about newer cars with one-pice nut and washer. Should i follow this [13+-4 in lb] on my 93 240? Quite big different torque there.

Thanks!
tat

 

your brakes generate a massive amount of heat when you stop. I assume you used a proper high temperature auto bearing grease?

 

I used Coastal brand high temp grease from auto shop.

 

The only thing in question is overtightening the bearing. That would make it hot. I don't do many bearings lately but in the old days we went by "feel": tighten it, then back it off 1/2 a turn. Shake the tire while still off the ground and if there is no wobble and it turns freely, you are good... But the brakes do heat up a lot and I can see how the hub is getting the transfer. 150 degs is not all that much.

What temp. do your other hubs measure at?

 

I guess, I am pretty happy now after adjust many times, now 120-130 ºF, feel not so hot on my hub anymore. I trust "feel" and last adjustment was good spot. Thank you so much for advice.

(Other Hubs, Rear are about 100, was not hot at all)

The story was: I asked my neighbor to check Hub temperature when i came back from test drive. He said really hot... and he told me his experience of too much tight bearing before, heated up crazy and high temperature grease melted down, changed new bearing.. so I was very much careful about it to not happen on my volvo.

Since I did many adjustment, I started to using steel wire instead of purchasing new cotter pins. I think it works okay, if you know anything about, please let me know.

-tat