hub nut size

D

dent

Guest
Tired searching the archives as i think there's something there but can't seem to get my seach working....
anyways, anyone know what the size of the hub nut is? I have a hub nut tool but am thinking of getting a proper deep socket for it where i can put a torque wrench to it and torque it down properly rather than guessing.
take care
sam
 
D

dent

Guest
hey blue.. that's great. I already have one of those but i can't put a torque wrench on the other end ;)
sam
 
D

dent

Guest
so i know i'm not over tightening or under tightening the bearings... preload :)
take care
sam
 
M

marc olivares

Well-known member
Apr 20, 2004
3,535
0
what peter is getting at, is that it's not rocket science. tighten the first nut tight, back off 90 degrees, snug up by hand and spin hub.
factory spec is 4nm, which is about 3 ft lbs.
which everyone can tighten 3ft lbs by hand.
the second, locking nut just needs to be tight to keep from backing out.
 
D

dent

Guest
interesting, that's what i've been doing.. snugging it up, back off 90 degrees... spin and make sure it's spinning freely and the grab a good hold to see if it's moves around... think i'm most interested in is the initial torque before backing off... think it's 45 ft lbs
unless the old method of snug, back off 90, shake is good enough...
take care
sam
 
p m

p m

Administrator
Staff member
Apr 19, 2004
15,642
866
58
La Jolla, CA
www.3rj.org
It matters mostly if you have replaced bearing races - need absolutely to drive them to their seats. Workshop manual suggests (IIRC) 61lb-ft (or, was it n-m?), back off 180 deg, and torque to 4 lb-ft (n-m?). Either way, you need the bearings to be settled, and after that the preload is very small - I usually do it by hand, without even any ratchet or wrench, so I don't overtighten it.
 
Steve

Steve

Well-known member
Apr 20, 2004
1,395
0
Eastern Shore of MD
While what you gentlemen have described is fine for a field repair, if the tools are readily available, why take short cuts? Half-ass is half done. Engineers don't make up these figures.

PM - It is 61Nm and 90 degrees and then 4Nm
 
Last edited:
p m

p m

Administrator
Staff member
Apr 19, 2004
15,642
866
58
La Jolla, CA
www.3rj.org
Steve said:
While what you gentlemen have described is fine for a field repair, if the tools are readily available, why take short cuts? Half-ass is half done. Engineers don't make up these figures.
Click to expand...

Steve, that's a real pompous statement. I have set wheel bearings in all of the vehicles I've ever owned by hand, and put many hundred thousand miles on them, and have not seen one fail.

Engineers DO make up these figures, so the grease monkeys at service stations have something to abide by. Engineers also show which errors are less forgiving than the others - for wheel bearings and mechanically-adjusted valves alike, a bit too tight is much worse than a bit too sloppy. 4NM is nearly an absolute minimum; still, the difference between various brands of bearing grease is sufficient to produce about two-fold difference in actual bearing preload with the same torque on the hub nut.
 
Steve

Steve

Well-known member
Apr 20, 2004
1,395
0
Eastern Shore of MD
p m said:
Steve, that's a real pompous statement.
Click to expand...
Your description of the method was exactly as I described, a field repair method. If you have the tools available to do it right and aren't using them, then it is half-ass.
p m said:
Engineers DO make up these figures...
Click to expand...
Sorry, but thats not true either. These values are not "made up", they actually test these things and the values are the results of those tests.
 
You must log in or register to reply here.
Top Bottom