cleaning / dismantling height correctors

espzetec · Post by **espzetec** » 06 Oct 2004, 18:12

can anyone give me a run through on this?
car is a 1993, 1.9td xantia.
need to drain the LHM too somehow and clean the whole system out. new filters also?

andylal · Post by **andylal** » 06 Oct 2004, 22:31

I have a few bits and pieces on this subject, Mike Phelan kindly sent them to me if you would like them send me a e-mail and i will forward them to you

pwatson · Post by **pwatson** » 06 Oct 2004, 23:28

Try this - written by Anders
http://www.citroenz.com/forum/viewtopic.php?t=615

uhn113x · Post by **uhn113x** » 07 Oct 2004, 12:46

Excellent as Anders' document is, it does not mention removing and washing the stack of damper discs, which is where any crud ends up.
Anders - do you want to add this bit? I have some ready-made text on it somewhere

AndersDK · Post by **AndersDK** » 07 Oct 2004, 18:43

Mike -
I think I mention "clean every bit in petrol" [:p]
just to make sure : you mean the thin steel disc (under the weak springs) at each end of the HC body ?

uhn113x · Post by **uhn113x** » 07 Oct 2004, 22:06

Hi Anders
No, I meant the stack of (10?) steel discs with tiny holes, assembled with spacers, that you remove by unscrewing the brass plug with 2 flats, in the end of the body, accessible after removing one of the steel discs.
Excerpt from text I did:
Looking straight at one end of the body, you will see the damper port, with a plug screwed into it to retain the damper discs. This plug needs a tool making to remove it – select a piece of steel rod (nail?) slightly smaller in diameter, and saw a slot in it that will go over the raised central part of the plug to unscrew it – it will not be too tight.
Carefully tap out the discs and spacers – all discs (10 if I recall correctly) are the same, but there is one larger spacer. Discs have minute central holes where dirt accumulates.

AndersDK · Post by **AndersDK** » 08 Oct 2004, 21:15

Mike -
Does the Xantia HC looks like this - showing the GS-BX-CX type :

uhn113x · Post by **uhn113x** » 08 Oct 2004, 22:09

Never had a Xantia, Anders, but would imagine it is same. You cannot see the damper in the section - you need another section taken at 90 degrees to this one to see it.
I do have such a picture somewhere - I will put it up here if I can find it

AndersDK · Post by **AndersDK** » 08 Oct 2004, 22:16

Mike -
It's obvious from your description that you have seen something I have yet to see [8D]
I have only ever seen a single disc to each end of the HC - on HC's from a range of BX's and CX's - and a single HC from a GS (given to me).
Does not surprise me however - as always there seems to be variation in the design of the HC's also [8D]

uhn113x · Post by **uhn113x** » 09 Oct 2004, 15:12

Hi Anders
Here we are:

This is a DS one; the GS/A and BX ones are the same except that there are 10 damper discs instead of 6. The have holes about 0.5 mm in them - it is these that get blocked. If you want to put this pic and my text into your explanation, feel free.

AndersDK · Post by **AndersDK** » 09 Oct 2004, 19:33

it's all clear now.
the damper valve - the restrictor orifices in the upper part of your picture.
* This I have never taken apart *
- but simply cleaned with a thin gauge wire and pressurised air.
It is quite important that these orifices are cleaned well, as blockage would give too much damping, i.e. give the impression that the HC is mechanically stuck.
Thanks Mike [8D]
I'll definately add your description to my write-up.

Niek · Post by **Niek** » 10 Oct 2004, 03:28

Hi guys,
I did a description of this some while back.
See:
http://www.andyspares.com/discussionfor ... chTerms=hc
Not too hard to do [:p]

john alexander · Post by **john alexander** » 10 Oct 2004, 05:02

I think the tool required to dismantle the HC damper stack might be similar to a flat screwdriver blade with a notch out the middle. Have a look at the packs of anti tamper bits sold in the UK in Maplins , also try tool stores,I think laser make a set.also lets you take other things apart that your not supposed to.

john alexander · Post by **john alexander** » 10 Oct 2004, 05:42

Just spotted this , 101 piece bit set in ALDI 14th oct for £5.99.

uhn113x · Post by **uhn113x** » 10 Oct 2004, 15:33

Might do, John, providing slot is wide enough. Got a set of Maplin ones, so will try next time I do a HC.