Axle problem Troopy

Owen,

I presume you are talking about the 6 studs that hold the drive axle to the hub. Sounds like you may have a bent axle or housing. Might pay to get the troopy to a diff specialist and have it checked out properly.

Cheers
Pop

Owen,

Check out these 2 threads on this site: 50868 & 78243

They both mention problems similar to yours, with some "fixes" and some reasons for the breakage.

Have seen it on a Dodge truck, with 2-speed diff too. All the passenger side studs broke, as changed from low to high in the diff. And it had happened more than once.

A bent axle is mentioned too, as a possible culprit.

Bob.

Hello Owen,
I had a similar problem on my troopy our mechanic said that the inner axle seal was damaged and that diff oil was contaminating the wheel bearing grease causing two problems 1. because the wheel bearing grease was now diluted it spilt out all over the rim . 2.wheel bearings became loose because they had no grease this caused the studs to shear = no drive , replaced the seal repacked and adjusted wheel bearings 8000 kms later still al good hope this helps cheers Ron

THe axle may be bent and stressing the studs.
The axle housing may be bent and stressing the studs.
The wheel bearings are too loose and stressing the studs. Too loose le trek (pun)
If it an older vehicle the outer bearing area on the axle tube may have worn at the bottom and it lets the bearing mive radially UP and causes the axle to run offline. Does the bearing inner cone fit snugly onto the parallel outer bearing area or does it flop onto the axle tube??? If it flops on then that too will add to the issue. Not an easy fix.

The oil seal letting oil into the grease won't cause it, many trucks run only oil in their hubs.My 60 often had oil in the grease, no troubles.

The wide wheels with plenty of negative offest will stress the hub sideways particularly if the wheel bearings aren't adjusted spot on/correctly and slightly loose will break the studs.
Do you still have the two locating dowels in the hub to axle flange??? These locate the axle centrally so the studs and tapers can hold it on centre.

Because it is happening on the left hand side it would seem to be a combination of wheel offset flex and loosely adjusted wheel bearings. It is possible to have 5 different mechanics all leave the bearing too loose at reassembly time.

I had a bent diff housing which caused me,over a period of time,to brake the axle on my troopy.Had it cold pressed back into shape.Also had to replace diff crown and the axles but all has been good and that was 4 years ago.Cheers.

im having the same issue.
bearings.
or not adjusting the studs once the cone washers settle in is another, re tighten.
and the other is stuffed hub, where the studs have chewed out their threads allowing movement.

my last resort is arp studs from locktup.
chromemoly gear!
have them in the box on the kitchen table.
279delivered express post.
i carry a bit of weight so id say thats why, and the cone washers not seating in went un checked.

comes as a kit though, full bearings QUALITY SEALS and gasket.
studs cone washers and nuts.

Thise studs were upgraded by Toyota in 1999 from 8mm to 10mm. I believe you can drill them out, retap the hole and replace with 10x1.25mm studs for the 78/79series.

Loose wheel bearings are the usual culprit because nobody bothers maintaining them, and because you can't check them for loosness without pulling out the axle shafts.

Wow,
thanks everyone lots of useful info there, now when i go back to mechanics tomorrow i'll have plenty of amo, thanks again

owen.