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TOPIC: ZB Drive line alignment

ZB Drive line alignment 8 years 3 months ago #177

  • amartyn
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The Baily Morris web site suggests a limit of + or - 0.1 mm as the acceptable tolerance so I guess you are just about OK.
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ZB Drive line alignment 8 years 3 months ago #176

  • clacksman
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Martyn,

Having tapped the UJ spider one way, I found the clearance under the circlip was barely 4 thou or 0.1mm - much less than I expected and probably nothing to be concerned about. I measured the circlips and they are 2 x 1.5mm. I don't suppose 2 x 1.55mm circlips are available anyway.

Need to look elsewhere for the source of the vibration methinks.

Andy
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ZB Drive line alignment 8 years 3 months ago #173

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Andy - tap the u/j spider gently from one side then use a feeler gauge to measure the clearance under the circlip to the spider end cap, then halve this measurement to get the additional thickness you need to add to your existing clips thickness.
Speak to Bailey Morris (01480 216250) service department they should help you, I got mine FOC.
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ZB Drive line alignment 8 years 3 months ago #172

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Martyn,
By eye, I reckon I have more than 0.2mm total end play on both axes of my front UJ, but I haven't got anything to measure it with properly.

How did you get hold of the thicker circlips?

The car is jacked up and supported on stands under the back axle so the angle of the diff should be about normal. (There is no weight on the jack). I have added another pic to show the angle on the rear UJ seen from the side. (Missed the focus on that one)

Trevor,
The propshaft clears the cross-brace by 11 mm as near as I can measure it.

I think my first action should be to try thicker circlips to remove the end play in the front UJ and see where we go from there
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ZB Drive line alignment 8 years 3 months ago #171

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Andy - just to let you put the end play into perspective my rear U/J had 0.2 mm total end play in one direction.
I replaced the original 2 x 1.3 mm thick circlips with 2 x 1.4 mm thick and that did make a difference to reduction in vibration.
The original vibration I had also started to be noticeable at 50 mph, now with the rear U/J done and the rear wheels re-balanced I can still feel it but am able to drive at 70 mph without it being too noticeable.
I would just like to eliminate it.
Your diff doesn't look as if it is nose down as much as mine, but your car is not on the ground in this pic so is it representative?
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ZB Drive line alignment 8 years 3 months ago #170

  • JONES21
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Hello Andy

I do not blame you for not trying to reverse at 50mph rear wheel steering is exciting ( read terrifying) I think your problem must lie with prop shaft, maybe alignment and/or balance it is really the only thing that is "new" that is likely to cause the problem.

Always difficult if you are remote, but the propshaft looks pretty close to the cross bracing in the transmission tunnel, maybe an just an illusion.

Peter Gamble may send you a new prop to try, it seems to be the most logical.

Glad you got home OK , good to see you both, a great weekend I thought all round, great cars, people, venues and weather

Kind regards
Trevor
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