Smoothing out the BX front struts.
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  1. #1
    Moderator Alan S's Avatar
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    Icon10 Smoothing out the BX front struts.

    Just out of curiosity, how many have tried that trick I posted a link to a few weeks back that internally lubes the front struts on a BX?
    If you haven't you're gunna kick yourself when you do; it's magic.
    So easy it's laughable and is even more successful if the outer lubing is carried out at the same time.
    Did mine today and it will now go from fully flat to fully raised and back to fully deflated without the slightest creak or moan & definitely no jumping or creaking either up or down.
    It's so easy to do; Raise suspension to highest setting. Pull the gaitor down from the top & wipe the chrome part. Coat with silicone grease (or normal chassis grease if no silicone) & refit gaitor.
    Then, remove the 2 rubber lines coming from the strut where they connect to a couple of approx 5mm steel pipes which sit on the inner guard. Get a small coffeee bottle & 3/4 fill with LHM and drop the ends of the two rubber lines into the LHM. Drop suspension to the bottom and then to the top and repeat about 3 times. Wipe the ends of the lines and refit to the steel pipes on the inner guard. Drive off and feel what a BX actually felt like when it was new. Don't let anyone (in particular a rip off merchant) tell you that this is only a temporary fix and needs mega bucks spending on it. It is possible for these struts to need reconditioning, but according to the overseas experience, most respond to this maintenance and it lasts for ages. If it gets stiff & sticky again further down the track, repeat the procerdure.
    Anyone apart from I think it was Ian Wheatley who also had success tried it & if so please post the results for academic interest.


    Alan S

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    Last edited by Alan S; 15th June 2004 at 07:38 PM.
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  2. #2
    1000+ Posts Ken W's Avatar
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    Alan,

    I greased the rods on my BX TZI struts with some teflon impregnated Nulon grease a couple of months ago and its been like magic ever since. Rises in the morning in one smooth movement - never had one that did this before.

    Don't know if the inner lube would add much as its is already lubed by the leakage that drains out the return tubes.

    Ken W

  3. #3
    Moderator Alan S's Avatar
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    Ken,

    Everybody overseas who has tried this have declared it a far better proposition resultwise to the outer rod method.
    As I say, needs to be done in both areas as the inner lubing we feel is more a case of washing scum off than lubing and gets to areas that the grease can't and the results they have reported over there where their struts get much worse than ours is that they have all worked better than the external lubing and as they haven't bothered doing the external greasing yet get the result, that it obviously does something.
    My struts now sound and feel like a tailgate strut when the car goes up or down.

    Alan S
    If it ain't broke, use a 12" shifter.....that usually does the trick!!

  4. #4
    Real cars have hydraulics DoubleChevron's Avatar
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    My BX struts have always felt perfect ... Only problem is they leak ... a lot Obviously all the LHM leaking past the seals lubricates the areas Alan speaks of That's why they don't bind at all.

    I'm driving the bloody BX again today 'cos my CX wouldn't start... (bloody thing), guess which car was last in the drive too I worked out the mongrel car would idle then immediatly cut out as soon as the accerator was touched. Yep, that's a familiar one, the hose from the turbocharger to the air flow meter has popped off the turbine. That's twice now this cars done this in the last 6years. Both times when sitting not being used I would have expected if the hose was going to come free it'd be from movement/vibration when driving, but both times it's been when the car is parked...

    seeya,
    Shane L.
    Last edited by DoubleChevron; 16th June 2004 at 10:40 AM.
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  5. #5
    Good Sport danielsydney's Avatar
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    Icon1

    BX is a pretty nice car shane....(the plasticky bx) i think they are called.

  6. #6
    Real cars have hydraulics DoubleChevron's Avatar
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    Quote Originally Posted by danielsydney
    BX is a pretty nice car shane....(the plasticky bx) i think they are called.
    I think you should get one Daniel, I suggest a BX1600 trs automatic would be the ideal car for you

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    Ken, Shane :

    It's obvious you dont know of the construction of the BX front strut, since you think that leaking struts would keep them lubed internally.

    The problem with dry/jerky/binding front struts are the top slide bearing bush, which is never LHM wetted internally, as the overflow/return hose is fitted far lower down.

    If the strut was leaking that bad internally, that any LHM would reach the top internally, then the front would never rise.
    The internals of the BX front strut are - despite what you may think - dry except for some seepage at bottom which are pumped out whenever the strut collapses during a settled suspension.

    Doing the internal lube procedure thus fills up the strut internals with LHM, soaking the felt washer just below the slide bearing. Then the slide bearing is lubed from inside.

    Have a look on the BX strut construction here :
    http://www.rwbsmith.plus.com/citroen2/Struts/struts.pdf

    If you own/drive a BX, do yourself the favour of trying the strut lube.

    Then let's talk BX struts as they should be, fella's

  8. #8
    Real cars have hydraulics DoubleChevron's Avatar
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    Anders,

    how did you guess I hadn't studied the strut design.

    If it had been daravi steering, or DS's/something really interesting I probably would. BX's have never interested me hugely (a bit like Xantias)

    seeya,
    Shane L.
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    '72 DS21 ie 5spd pallas (last looked at ... about 15years ago)
    '78 GS1220 pallas
    '92 Range Rover Classic ... 5spd manual.

    Yay ... No Slugomatics


    Modern Junk:
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  9. #9
    Moderator Alan S's Avatar
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    Quote Originally Posted by DoubleChevron
    Anders,

    how did you guess I hadn't studied the strut design.

    If it had been daravi steering, or DS's/something really interesting I probably would. BX's have never interested me hugely (a bit like Xantias)

    seeya,
    Shane L.
    No Shane, what you mean is that the BX hasn't broken down often enough for you to Have to study them that's why they had you fooled.


    Alan S
    If it ain't broke, use a 12" shifter.....that usually does the trick!!

  10. #10
    Good Sport danielsydney's Avatar
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    Icon10

    I would love to get a BX or a DSpecial after the DDAY Id love a Dspecial i think they are great cars, according to a mech at penrith euro autocare they are not that troublesome....

  11. #11
    Member Tim Tech's Avatar
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    Default BX front struts

    BX FRONT STRUTS

    FULL RECONDITIONED



    $120.00 a pair exchange
    Incl return postage to anywhere in Aust

  12. #12
    Real cars have hydraulics DoubleChevron's Avatar
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    Tim,

    I find the exceptionally interesting. I could not get just the parts for $60bucks a strut. Can you please define 'full recondition' for me. If the struts indead have new slide bearings and seals I would be very interested.

    thanks
    Shane L.
    Last edited by DoubleChevron; 17th June 2004 at 11:27 AM.
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    '92 Range Rover Classic ... 5spd manual.

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  13. #13
    Moderator Alan S's Avatar
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    Quote Originally Posted by DoubleChevron
    Tim,

    I find the exceptionally interesting. I could not get just the parts for $60bucks a strut. Can you please define 'full recondition' for me. If the struts indead have new slide bearings and seals I would be very interested.

    thanks
    Shane L.

    This could be interesting as I just checked out Andyspares price at A$400 each incl VAT.
    Converting that to Australian prices it would be fair to imagine a minimum of A$1200 a pair locally as a base price and I'm almost positive that the kit has been quoted at around 30 UK pounds a side.
    Jon would be able to confirm that; (No pun intended)
    Freight costs two ways would already eat up at least the $20 over the $100 so there's not much left after that.
    With a garage full of BXs this is either a godsend or a mistake.

    Alan S
    If it ain't broke, use a 12" shifter.....that usually does the trick!!

  14. #14
    Member Tim Tech's Avatar
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    Default Reconditioning Terms

    YOU SEND AND I RECONDITION:

    New bumps stops x2
    New rubber o'ring teflon sleeve seal
    New top seal
    Re-suface polish inner strut tube

    ALL GENUINE CITROEN PARTS


    $120

    FUNNY HOW CRITCAL PEOPLE CAN BE IN HERE!!!

    TIM TECH

  15. #15
    Moderator Alan S's Avatar
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    Excuse me; who's being critical?
    Simple question requiring simple answer!!
    Your name Tim or Gerry?????


    Alan S
    If it ain't broke, use a 12" shifter.....that usually does the trick!!

  16. #16
    Real cars have hydraulics DoubleChevron's Avatar
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    Thanks Tim,

    I've just learnt in the past anything that sounds to good to be true ... is ....

    Given you must dismantle, reassemble and replace those seals, I think this is a quite reasonable price.

    What do you do if you find the returned struts have slide bearings that are at the end of there service life ?? Do you have to charge extra given the returned struts can't be cheaply freshened up (much like people that send in hydraulic pumps to be re-built on exchange basis, only there exchange has a cracked pump body).

    seeya,
    Shane L.
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    '78 GS1220 pallas
    '92 Range Rover Classic ... 5spd manual.

    Yay ... No Slugomatics


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  17. #17
    Member Tim Tech's Avatar
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    To be completely honest ive never seen them worn??? Obviously you have. I must watch for this. Thankyou for that Shane L.

    Have you seen many worn???

    Tim Tech

  18. #18
    Real cars have hydraulics DoubleChevron's Avatar
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    Nope

    Obviousy I've never had one apart. It's a fair assumption that if EVERYONE I've heard of that rebuilds them put new slide bearing in, and slide bearings are a part of the rebuild kit that the DO wear

    I'm certainly wasn't doubting you, just wondering what you do if someones sends stuffed struts back as an exchange Obviously this isn't an issue.

    seeya
    Shane L.
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    '72 DS21 ie 5spd pallas (last looked at ... about 15years ago)
    '78 GS1220 pallas
    '92 Range Rover Classic ... 5spd manual.

    Yay ... No Slugomatics


    Modern Junk:
    '07 Poogoe 407 HDi 6spd manual

  19. #19
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    Quote Originally Posted by Alan S
    Then, remove the 2 rubber lines coming from the strut where they connect to a couple of approx 5mm steel pipes which sit on the inner guard. Get a small coffeee bottle & 3/4 fill with LHM and drop the ends of the two rubber lines into the LHM. Drop suspension to the bottom and then to the top and repeat about 3 times. Wipe the ends of the lines and refit to the steel pipes on the inner guard.


    Alan S
    Alan

    I think I will try the lube on the struts of the XM too. But just curious as to why you would do the steps I left in above? These are only return lines and how would you expect the strut to get any LHM in them doing this??

    Please be gentle, the brain is still jet lagged
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  20. #20
    Moderator Alan S's Avatar
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    According to those who have stripped a few they reckon it just sucks a few mls on the underside of the teflon seals and that washes the gummy stuff off.
    Anders has done a write up on the XM & Xantia ones as apparently they work a bit different to the BX.

    Alan S
    If it ain't broke, use a 12" shifter.....that usually does the trick!!

  21. #21
    1000+ Posts stuartb's Avatar
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    Default strut lube successful

    early days yet but the squeak seems to have gone and its seems smoother....but to clarify you should end with the struts fully down before putting the hoses back on, or some of the gunk would get back in the main LHM tank.

  22. #22
    Administrator GreenBlood's Avatar
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    Icon10 a long lost sheep...baah...baah

    Quote Originally Posted by stuartb
    early days yet but the squeak seems to have gone and its seems smoother....but to clarify you should end with the struts fully down before putting the hoses back on, or some of the gunk would get back in the main LHM tank.
    Well hello stranger, long time between drinks..... welcome home

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  23. #23
    1000+ Posts dogboy's Avatar
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    Default lube me up

    Hi Alan,everyone!!!
    I have lubed my BX struts as per your instructions...a tad hard to do on your own....really need someone to hold the jar whilst someone else moves the suspension up and down but i somehow managed to do it without LHM going everywhere (but the struts)....anyhow despite breaking one return line all went well and the beast is quiet as a lamb!!! gee I miss the groaning
    cheers

  24. #24
    Fellow Frogger! Jack Z's Avatar
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    Alan,

    Just got the TZI back from Tom Dolan and gave him your instructions to try....

    For what it's worth he thought it was a great idea and "made sense" and is now following this process as part of a routine service (perhaps a license fee or commission may be in order!)

    Our TZI if anything suffered from lack of use (120k since '91) so had terribly jerky struts and they now work perfectly.

    I hate to admit it but a well sorted Auto TZI is a much "nicer" car to live with in mixed driving than the TRI and from a performance perspective (and I know Shane will dissagree but that's ok) just as responsive but the 5speed will always be more fun and chuckable!

    Cheers....
    BX TZI Hatch
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  25. #25
    Real cars have hydraulics DoubleChevron's Avatar
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    Why would I disagree. I TZi is still just a TRi underneath. The only real difference is the gearbox. If you like the automatic that's great Whatever makes you happy

    Me I'll stick with *proper* gearboxs. Though I do admit I would go for a DS BVH in a heartbeat (though I guess it still really is a manual behind all the hydraulic valves). The C-matic to a much lesser extent is quite ok too. To be honest in a CX the C-matic/Automatics give a much nicer ride to passengers. The clutch and gearchange isn't great in the CX, though I personally would still prefer a manual.

    seeya,
    Shane L.
    'Cit' homepage:
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    Proper cars--
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    '63 ID19 http://www.aussiefrogs.com/forum/showthread.php?t=90325
    '72 DS21 ie 5spd pallas (last looked at ... about 15years ago)
    '78 GS1220 pallas
    '92 Range Rover Classic ... 5spd manual.

    Yay ... No Slugomatics


    Modern Junk:
    '07 Poogoe 407 HDi 6spd manual

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