If the wheel bearing is howling a bit, could it just need greasing or adjusting, or will it need replacing? Which side of the bus is a left handed thread - assume it is the nearside so the wheel is trying to do up the nut when you are driving forward. ta.
Yep n/s front is left hand thread. Don't waste time greasing it if it's noisey, it's a half hour job and a cheap part for peace of mind.