Axle problem Troopy

Submitted: Saturday, Sep 22, 2012 at 13:49
ThreadID: 98167 Views:2723 Replies:8 FollowUps:5
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Hi all,
I need help! I'm road tripping around oz and for the second time in 2 months the bolts holding the rear passenger side axle have sheared off an leaving me with only front wheel drive, for 4 months the axle has been spitting grease around the rim, I've had this fixed 5 times from 5 mechanics and no one can diagnose the problem only quick fixes, the truck has wide wheels but I'm not sure if that's related, any help would be greatly appreciated, cheers

Owen.
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Reply By: pop2jocem - Saturday, Sep 22, 2012 at 14:01

Saturday, Sep 22, 2012 at 14:01
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
AnswerID: 495410

Reply By: Bob Y. - Qld - Saturday, Sep 22, 2012 at 15:27

Saturday, Sep 22, 2012 at 15:27
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.

Seen it all, Done it all.
Can't remember most of it.

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AnswerID: 495412

Reply By: lostinwauchope - Saturday, Sep 22, 2012 at 15:30

Saturday, Sep 22, 2012 at 15:30
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
AnswerID: 495413

Reply By: Ross M - Saturday, Sep 22, 2012 at 16:10

Saturday, Sep 22, 2012 at 16:10
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.
AnswerID: 495417

Reply By: passionfruit - Saturday, Sep 22, 2012 at 16:42

Saturday, Sep 22, 2012 at 16:42
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.
AnswerID: 495420

Reply By: mountainman - Saturday, Sep 22, 2012 at 17:49

Saturday, Sep 22, 2012 at 17:49
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.
AnswerID: 495427

Follow Up By: owen w - Sunday, Sep 23, 2012 at 10:55

Sunday, Sep 23, 2012 at 10:55
Thanks mountain man,
might be in my best interest to get a kit myself.
0
FollowupID: 771085

Reply By: Member - Phil G (SA) - Saturday, Sep 22, 2012 at 22:38

Saturday, Sep 22, 2012 at 22:38
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.
AnswerID: 495441

Follow Up By: owen w - Sunday, Sep 23, 2012 at 11:08

Sunday, Sep 23, 2012 at 11:08
It is a 1999 model,shame that sounds perfect
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FollowupID: 771088

Follow Up By: Member - Phil G (SA) - Sunday, Sep 23, 2012 at 11:16

Sunday, Sep 23, 2012 at 11:16
Owen,
1999 was the changover year.
Is yours the leaf spring front (75series) or the coil spring front (78 series)?
0
FollowupID: 771089

Follow Up By: owen w - Sunday, Sep 23, 2012 at 18:14

Sunday, Sep 23, 2012 at 18:14
Phil,
its a 75 leaf spring i've just tryed to measure it an looks like its an 8mm thread. Dose that sound right?
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FollowupID: 771109

Follow Up By: Member - Phil G (SA) - Sunday, Sep 23, 2012 at 20:44

Sunday, Sep 23, 2012 at 20:44
Yep, thats right. the 5 stud landcruisers (78/79 and 105 series) had bigger 10mm studs.
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FollowupID: 771117

Reply By: owen w - Sunday, Sep 23, 2012 at 11:36

Sunday, Sep 23, 2012 at 11:36
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.
AnswerID: 495464

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