Bad juddering after running 60mph

[frank rabbets]

P.S. Are the front axle mounting bushes OK?

 

[prendergast7]

Hi everyone,
I'm hoping someone will know what is going on with my 1996 24v Manual HDJ80R.
When I travel at around 55-60+ MPH it sometimes starts to judder badly . So much so that I need to stop, then it's OK again.
This has happened before, a long while back when it was new, and Toyota fixed it under warranty diagnosing the problem as the handbrake binding in the rear rotors.
Is this a known issue? Does it just need new rotors or could it be adjustment or brake service etc?
When it was new and under warranty the Toyota agent was always firing the parts canon at it so all new brakes and rotors was the fix.
However that was A LONG time ago and I did not have to pay, (or have much of a say in the matter), so I wonder if anyone has any experience of this before I get new rotors installed.
Regards to all
GregH

bushing is gone?

 

[Shayne]

A garage unfamiliar with cruisers might not know front wheel bearing retaining nuts should be checked for torque occasionally .

 

[Gregh]

An in cabin video might help. I would quadruple check that the rear shoes are backing right off when hand brake is off. What was the very last work done before the problem occurred?

Hi Frank, The last work was the differential rebuild, then the handbrake and rear prop-shaft
I have been told that it is known for the outer pinion bearing race to spin in the housing. And this very likely happened when it had problems a while back, so maybe this is causing the juddering now
The biggest problem I have is not having a transmission company down here in the South East that I can take it to
A sign of the times I guess

 

[frank rabbets]

I would ask the man whom worked on the prop if he separated the two halves by sliding the splines out. If so he may have put the halves back together with the wrong phasing.

 

[Jon Wildsmith]

I've never read of the outer pinion bearing race spinning on an 80 series diff.

Could what you're describing as judder be another mans wobble? aka death wobble if you google it? That can be intermittent / go away for a while if you slow down / stop.

Where about in the south east are you? Maybe there's a forum member, or Landcruiser specialist near you that can take a look?

 

[Gregh]

I would ask the man whom worked on the prop if he separated the two halves by sliding the splines out. If so he may have put the halves back together with the wrong phasing.

Hi Frank, The prop shaft was put in because the existing one had a "bit" of play in the UJ at the sliding end. It made no difference to the problem so I am sure the prop is OK. I cannot honestly say it runs any better than the one it replaced. Thanks for the reply. Cheers

 

[Gregh]

I've never read of the outer pinion bearing race spinning on an 80 series diff.

Could what you're describing as judder be another mans wobble? aka death wobble if you google it? That can be intermittent / go away for a while if you slow down / stop.

Where about in the south east are you? Maybe there's a forum member, or Landcruiser specialist near you that can take a look?

Hi John, I did the googling and it is definitely not that "Death Wobble"
A few years ago the suspension was refurbished front and back and upgraded with OME springs, shocks and steering damper. I went for the intermediate duty OME kit because I used to tow trailers and load the vehicle up. Now it's only a daily driver I find the suspension very stiff and bumpy but I am confident the suspension is good

The reason I am focussed on the differential is because since I ended up with it there has been noise and continual oil leaks from the pinion. This continued until a few years back the nearside lower steering joint fell off and the wheel and drive shaft went AWOL. The guys who did the repair forgot to re-fill the diff oil, the diff seized up, and it became an expensive farce trying to get the differential fixed

The Landcruiser is in Edenbridge in Kent and I live in Bexhill, East Sussex. When I went searching for a local 4X4 garage I discovered that they specialise in Land Rover and do not wish to look at anything else , and the general engineers do not have car lifts that can take the Landcruiser. There are a lot of "agriculture" engineers, who do have the lifts, but they only get involved with things that can be fixed with a Milwaukee and sledge hammer!

Anyhoo, I remember you helped me out years ago and that was very much appreciated so it is good to hear from you again
Regards
Greg

 

[Andy]

Greg, I’m only in Eastbourne & had a transfer box sorted by bexhill gearboxes a few years ago, I believe they also do diffs, Google them & give them a call, not sure if they do the stuff whilst still in the truck or you’d need to take it out for them

Andy

 

[Jon Wildsmith]

Does it go around corners ok? No feeling of wind up or squealing tyres? If your truck has the viscous coupling, that's another thing that can bind, and cause juddering.

Is it in bits at a garage in Edenbridge, or you just don't keep it at home? If the front diff is out of the truck I'm just west of Farnborough if you want an opinion of its condition.

Different suspect - Any signs of grease/oil at all around that near side lower steering arm under the swivel? Forgetting to put oil in the diff doesn't inspire confidence that they did the rest of that job right and that arm needs doing right or it just comes loose again, if I'm understanding what happened correctly.

Isn't there a Landcruiser specialist sort of down that way? Lar4x4? Never used them, just see them advertising.

I'd be tempted to take the front prop shaft off, lock the centre diff and drive it like that to see if the juddering still happens. It might help narrow things down ...

 

[frank rabbets]

If IRC Chris had a similarly described "vibration". He chased it by looking at lift he had done and looking at the prop shafts. In the end he discovered, I think by accident, that the front diff bearings had failed. After he rebuilt the diff the problem had gone.

 

[Gregh]

Does it go around corners ok? No feeling of wind up or squealing tyres? If your truck has the viscous coupling, that's another thing that can bind, and cause juddering.

Is it in bits at a garage in Edenbridge, or you just don't keep it at home? If the front diff is out of the truck I'm just west of Farnborough if you want an opinion of its condition.

Different suspect - Any signs of grease/oil at all around that near side lower steering arm under the swivel? Forgetting to put oil in the diff doesn't inspire confidence that they did the rest of that job right and that arm needs doing right or it just comes loose again, if I'm understanding what happened correctly.

Isn't there a Landcruiser specialist sort of down that way? Lar4x4? Never used them, just see them advertising.

I'd be tempted to take the front prop shaft off, lock the centre diff and drive it like that to see if the juddering still happens. It might help narrow things down ...

Hi Jon,
The Landcruiser is parked in Edenbridge as I cannot drive it due to this vibration problem. I got in contact with LAR4x4 and I'm waiting to get a reply. If possible I will take it to them and let them check it over and (hopefully) fix it!
Concerning the centre diff I can only lock it by going into low range so I will not get up to the speed where it triggers the problem
Thanks for the help Jon, hopefully LAR4X4 will get back on this
Cheers
Greg