[ROVERNET - UK] P6 Steering Idler Damper

Tom Trafton v8rover at earthlink.net
Thu May 19 17:08:27 BST 2005

Hi Steve

These units are quite simple rotary dampers, with a vane turning inside a
housing.  I have pulled mine apart, in situ, lifted the vane out, cleaned it
out well, then put it  back together, replacing the oil with 90W gear oil.
You do find very fine metallic particles from internal wear but as long as
there is nothing broken and the clearance between the vane and housing
hasn't increased appreciably, it will continue to work just fine.  Funny
that the manual says 'no maintenance'.  I noticed that too but then noticed
that they put a plug on the top so you can top it off!



----- Original Message ----- 
From: "smanwell" <smanwell at sprintmail.com>
To: <rovernet at lyris.ccdata.com>
Sent: Thursday, May 19, 2005 8:47 AM
Subject: [ROVERNET - UK] P6 Steering Idler Damper

> P6'ers,
> I have found a spare idler damper for Albert Boasberg's 2000TC, but it
> has brought up a few questions.  It appears to be in good condition -- 
> the shaft turns in the body without any apparent play or looseness in
> the bushings; no sign of leaks.  I noticed however, that the hydraulic
> resistance as I turned the shaft was not completely steady at first.
> Now that it has been sitting upright in the vice for a while and it has
> been exercised back and forth several times, the hydraulic action has
> smoothed out.  (I take the unsteady damping to be some air mixed with
> the damping oil after turning the damper right side up.)
> I got to wondering whether the oil in the unit should be topped up and
> then I discovered that the manuals call for "no maintenance" on this
> part.   I have a vague memory of topping these dampers up with engine
> oil 25 years ago (!) on my grandfather's 2000TCs -- maybe I'm thinking
> of some other part.
> What is the collective wisdom on these dampers -- should the oil be
> topped up and with what fluid?  Are they really not rebuildable as the
> manuals claim?  How do these units tend to fail -- wear, leaks?
> Regards,
> Steve Manwell
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