Grease(post 52517) and GQ front wheel bearings

Hi Willem,
Is it possibly heat transmitted from the brake rotors caused by binding brake pads?

Willem,
As mentioned about the heat being transmitted by binding brakes earlier if the seventy klms that you travelled involved a lot of stop start driving the rotors and eventually the hubs act as a heat sink especially if you are not driving for a longer distance to cool everything down. Aluminium is an excellent conductor of heat so this will heat up quite quickly.
Could well be a normal temp that you just haven't noticed before, if you can check to see what the temp actually is with an infra red heat gun, you might be surprised at the temp, you can often feel that the temp is really hot when in reality could be sixty odd degrees. Don't over grease this is as bad as under greasing both can contribute to over heating.
After you've done a long sand run feel the temp of the gear stick through the boot inside the vehicle, now that's hot!!!!!
Hope everything works out for you and you eventually get away. Funny isn't it always the left hand wheels are the ones that fall off, direction of rotation and a RH thread, that's why commercial vehicles have left hand threads on the LH side of the truck, some smart cookies out there...........

Still not gone yet, that's gotta p%ss you off hey.

As I said yesterday, I hope everything gets repaired properly so you and Judith can have a problem free happy Christmas and a merry new year

Cheers Luke

Willem

"It is nice living in a small country town but everything has to be imported and takes time to get here"

Just thinking though, that if you were in Adelaide you wouldn't get your rig on a hoist in a day. Swings and merry-go-rounds ........

Sad picture seeing the mighty GQ with its bum on the ground.

Good luck with it all. Compliments of the season.

JD

Hi Willem, You say the bearings were not over tightenened !, but that is a classic example of what happens if they are, or they have not been packed with grease in the correct manner, Depends a bit on what ks they have done also, if the hard surfacing is on the way out then heat can be generated very easily. Anyway not a mechanic, but have learn't a lot from a million mistakes, and do see and hear lots of issues from trusted guys in this field.

Cheers Axle.

Also remember that a bearing will "grow" a bit during running. So if there is insufficient clearance installed in the preload it can still overheat even though it feels free running on installation. Happens a lot, from small cars to heavy industrial equipment, and even the best engineers make these mistakes on occasions. Discolouration starts at post 400 degrees C. Blue is the common overheat range in a bearing, at 500+ degrees C.

The bearing ring surface will also tell a tale; brinelling, false brinelling, spalling, reverse loading, normal wear and fatigue, lubricant failure, corrosion, contamination, etc. Have a close look at the bearing contact surfaces for evidence of what the cause was.

Hope it gets fixed.