jimep

my buddy's got a 91 SAS'D W/34'S, stock re, w/ dual cases. Out wheeling one night and he says his hub just fell off! Found all 6 bolts and 2 dowel pins sheared off. I thought there was other things that would have broke first. Ie stock birfs or internals (hub gear possibly) but this just seems a little out there. Any body else ever see something like this? Think catching it on a rock might do it, or possibly just sheared off from torque?

toyospearo

GOOD GOD!
Nope, I have never seen anything like that.

91_TOYOTA_4x4

nope havent seen that before lol maybe something wasn't put together right and it put a ton of stress on it?? weird

ESQ

Might be due to overtorquing all the bolts. Combine that with the shear of an impact and/or too much torque to the wheels and there you go.

Did you check the other side?

drew303

WHAT ESQ SAID!

Over-torqued nuts. Thats how you sheer wheel studs (and direct impact).

I to have never seen this but overtorquing seems to be the only plausible explanation for this. Thats the only thing that could really weaken them that i can think of... or under torqued?

Just Learning

was grease used- then a impact???

waskillywabbit

iTrader: (-1)

My bet is he did not use cone washers or never torqued them properly, as in too loose.

Regardless it was probably caused by human error instead of a mechanical failure.

Last sfa I bought had flat washers and no cone washers on the manual hubs.

RustBucket

iTrader: (1)

If the cone washers were removed, wouldn't the base of the cone taper act like a knife to the studs?

fillsrunner4

Ive seen it

Seen the six bolts and 2 pins shear off a few times. Be sure you have all your bolts tight before you go out wheelin next time and I mean tight to there specs. Be glad it wasnt the birf or other internals. The bolts and pins are easy to fix

jimep

Not sure how he installed it but i'm fairly certain he used the cone washers- overtorqe is a possibility w/him but I usually just use a 1/4 inch drive for those little bolts. luckily we got a few axles for parts and just replaced the whole spindle assembly with new used cones.

waskillywabbit

iTrader: (-1)

To prevent this:

Properly torque the hub studs
Upgrade the hub studs to ARP
Upgrade to the six dowel mod

fillsrunner4

and some drive flanges well ok maybe not for the DD rigs

fillsrunner4

and some drive flanges well ok maybe not for the DD rigs. get some longs too cause the next thing is the birfs

jimep

she won't let me get bobby longs at least not yet. but they're coming and she's not gonna know when. Just don't tell her I said that. I've had my share of broken birfs.