Landcruiser king pins

Submitted: Thursday, Feb 10, 2005 at 17:33
ThreadID: 20305 Views:5986 Replies:2 FollowUps:2
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The steering on my 78 series cruiser recently began to drift left and right which meant constant correction to keep in straight line. To cut a long story short it was found the preload on the king pin bearings had come off, the fix for which was removal of all the preload shims. The work was carried out by a steering specialist not toyota. This is on a vehicle that has only travelled 60 000 kms with very little heavy work. A camber kit was fitted to the left side of the vehicle about 10 000 kms previous. The bearings on this side were not quite as bad as the right.
My questions are:
1.Is this a common problem in cruisers.
2.Are the bearings likely to have damaged driving with no preload.
3.What is the best fix in this situation. Should new bearings be fitted and is simple removal of the preload shims ok.

Regards.
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Reply By: Member - Ivan (ACT) - Thursday, Feb 10, 2005 at 18:29

Thursday, Feb 10, 2005 at 18:29
Dazz,

I'd be looking at the 70 series list at www.lcool.org for model specific info
Cheers,

Ivan
2008 D4D Prado

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AnswerID: 97694

Follow Up By: Member - Phil G (SA) - Thursday, Feb 10, 2005 at 22:28

Thursday, Feb 10, 2005 at 22:28
Just to endorse what Ivan has said. Norm from Trac4 knows everything about these vehicles and is an active member on 70scool. He's worked on them longer than anyone. He'll give you a straight answer. Just need to join the group through LCOOL

Cheers
Phil
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FollowupID: 356316

Reply By: kesh - Thursday, Feb 10, 2005 at 18:44

Thursday, Feb 10, 2005 at 18:44
To begin, I would reckon that at 60k. your unit is barely run in. To have swivel pin bearing probs. at those km's.is most unusual. (it would be leaking grease out through the seals something awful)And if so, it should be a warranty fix, unless the prior work fitting the castor kit precludes it. The specs. for the preload (all seals fitted, etc.) is given as between 3-6 kg. force to turn the assembly, which is not a great amount. There are many other reasons for wandering steering. Mine (75,but the same)is after 150k.and a hell of a lot of corrugations is still good and tight but a change in tyres, inflation etc. is always noticable.
The only way to check for damage to the races is complete dismantling. Called "brinelling" the roller/ball indents into the cup/cone which prevents any further correct preloading.
good luck with it all kesh
AnswerID: 97697

Follow Up By: V8troopie - Friday, Feb 11, 2005 at 01:22

Friday, Feb 11, 2005 at 01:22
I'll second that complete dismantling is the only way to check. My 75 series has travelled 230K and the bearings are quite noticable brinelled by now. I noticed that when I replaced the wheel bearings a few months ago. So I got myself the swivel pin bearing kit and will replace all 4 of these bearings soon.
There is no noticable steering deficiency, despite the worn bearings. About ten years ago I had an eccentric cup left swivel bearing fitted but this is much smaller and wore worse than the older, original bearing on the right side. I believe there are better mehods for castor correction available now and will investigate these if the steering is uncomfortable after the identical bearings are fitted.
Klaus
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