the drop links are the most likely and are only about a tenner for the
pair. To check them: you need to undo one side and try and lift the arb
up and down, which checks the opposite side, repeat by undoing the other
one. The arb bushes are quite straightforward to change with the car in
the air, but much less likely to be actually worn. Bottom ball joint is
not uncommon on those, again a complete arm is very cheap and easy to
replace, checking those is best done with two people, one to watch the
joint from underneath, the other to tug at the wheel and or use a bar to
lift the wheel, just as they do at the mot. ebay have kits of two arms,
two drop links and two track rod ends for about fifty quid, and two arb
bushes will be about a tenner.
Thanks for that. I'll have a play with the drop links as a first option. The
MOT a couple of weeks ago found nothing other than the broken spring so I
suspect the ball joints are all ok. I gather that the drop links aren't
easily testable at MOT time though unless they're completely shagged. I
found a Youtube video about them a few days ago and they didn't even look
that bad once the guy had got them off the car but new ones definitely cured
the noise. The only thing he could really point at was you could move the
joints very easily by hand on the old ones but the new ones were almost
completely stiff. I guess it boils down to there being just a few thou of
play inside the old joints and that's enough to cause a knock.
For the sake of £9.80 inc free postage I think I'll just order a pair rather
than spend a couple of hours dismantling the old ones, checking them,
putting it all back together to stay mobile and then having to do it all
again once the new parts arrive.
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