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Discussion Starter #1
Hi - when driving over bumps I can hear some knocking noise from the rear suspension
pls look @ the video - here I am activating the the high suspension hydr arm manually

see movie- link below
Silver Shadow
 

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The knock may be traced to several areas. It can be caused by ram issues. bushings, spring related etc.
I would suggest having a helper search for the knock during test, providing you know what to look for. Metal on metal knock has a way of traveling and narrowing down should not be complicated.
The purpose of rear leveling is to help keep the output shafts level as much as possible.
 

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If the knock appears over bumps, the torsion rods for the boot lid have been known to rattle in the trunk as well as a loose jack..
 
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