Front wheel bearing, '94 Vitara TD01

[Guard6]

Has anyone else had the problem of the wheel coming off whilst driving off-road??
It appears the bearing race has separated from the hub on the front RH wheel.. is there any mechanical part missing or does the hub rely solely on the "pressed" bearing race holding the entire wheel assembly on? any help would be great, kinda nervous about driving the little beast now......The spline, bearings, spline threaded nut and lock nut are all in good order, I am missing something?

[jtgh]

swap out of front hub bearings

part 16 and 19 , hold it all on.

the service point is 7.5km ( these hubs hold very little grease) tis a fact.

[Guard6]

Great, thanks for your advice, i didn't think i was missing anything..... So basically the bearing race that is pressed into the hub, takes the weight. If the bearing race slips in and out from the hub, something is not right huh, replace the hub and or the bearing race??

[jtgh]

you didnt read it
its a crush shell bearing, they are MATCHED sets. and CAN NOT BE intermixed.

its not like a trailer axle with bearings set loose , they are under 175 lbs/ft torque at all times, the gap is set , by the CRUSH of the centers .
very high tech method here.

that is way ( and low grease volumn) the service point is 7.5k miles. see?
if you do the maintenance the wheels never fall off.

if you need the whole section in the fsm for races, let me know.

it is not just a simple old fashioned , tapered roller bearing,not at all.

cheers.

[Guard6]

Ok, now i understand, they expand out the race into the hub with the preloaded pressure....... all makes sense, just need to get the tool the tighten to the max.
Can you over tighten?? Guess what, i'm not a mechanic, just need some practical help. Thanks

[jtgh]

that is good.
yes, it must be in the range stated.
not below ( bearings beat each other to death) loose.
and
if too tight they run hot, and Timken has a chart.
it is a bath tub curve.
too loose is the steep part of curve.
early death.
too tight , depends on how much. but will lower live 10k , in one example.

they use these on huge semi trucks (110,000 lb) loaded trucks.
and these factors are tracked.
if forget how many folks died last year eating a truck tire at 60mph.
so they are increasing quality control as we speak.
"in the range or they go bad"