1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

ABC time, again.

Discussion in 'Suspension, Steering & Brakes' started by gassed up, Jul 11, 2019.

  1. gassed up

    gassed up Active Member

    Messages:
    42
    Likes Received:
    14
    Joined:
    Jul 2, 2006
    Location:
    liverpool
    Your Mercedes:
    2011 C207 350CDI;2010 C207 350CDI sport;2010 SLK300;2004 C209 320;2000 C208 230K;
    Hi Guys, the replacement pump on the SL500 has started knocking. Interesting thing is the knock is intermittent. Sometimes a real rattle, sometimes silent. Anybody any experience of this, is it trapped air?
     
  2. LostKiwi

    LostKiwi Senior Member

    Messages:
    17,941
    Likes Received:
    8,200
    Joined:
    Aug 25, 2006
    Location:
    Midlands / Charente-Maritime
    Your Mercedes:
    '93 500SL-32, '01 W210 Estate E240, 02 R230 SL500 (Malcolm Spec), 04 Smart Roadster Coupe
    Where did you source the pump and how long ago?
     
  3. OP
    gassed up

    gassed up Active Member

    Messages:
    42
    Likes Received:
    14
    Joined:
    Jul 2, 2006
    Location:
    liverpool
    Your Mercedes:
    2011 C207 350CDI;2010 C207 350CDI sport;2010 SLK300;2004 C209 320;2000 C208 230K;
    eBay purchase from Poland about 12mths ago. I did not exchange the old pump because I will buy a seal kit and rebuild it. My personal philosophy when approaching a challenge/technology I have no previous experience of is to start cheap - possibly f**k up, learn and skill up. The alternative is to spend big and still get it wrong
     
    Wighty likes this.
  4. Craiglxviii

    Craiglxviii Senior Member

    Messages:
    14,172
    Likes Received:
    3,556
    Joined:
    Sep 6, 2015
    Location:
    Cambs UK
    Your Mercedes:
    W215 CL500 Motorway Queen; W251 R320L Familybenz, S211 E320 Avg Designo Edition now sadly missed.
    Spend £560 and buy a new pump from MB. It’s really not worth the risk to the entire system; 4 struts @ £700 each plus £2500 of valve blocks...
     
    Dean Fletcher likes this.
  5. OP
    gassed up

    gassed up Active Member

    Messages:
    42
    Likes Received:
    14
    Joined:
    Jul 2, 2006
    Location:
    liverpool
    Your Mercedes:
    2011 C207 350CDI;2010 C207 350CDI sport;2010 SLK300;2004 C209 320;2000 C208 230K;
    I take the point but why the knocking coming and going, any clues?
     
  6. Craiglxviii

    Craiglxviii Senior Member

    Messages:
    14,172
    Likes Received:
    3,556
    Joined:
    Sep 6, 2015
    Location:
    Cambs UK
    Your Mercedes:
    W215 CL500 Motorway Queen; W251 R320L Familybenz, S211 E320 Avg Designo Edition now sadly missed.
    A sticking flow restrictor valve possibly.
     
  7. OP
    gassed up

    gassed up Active Member

    Messages:
    42
    Likes Received:
    14
    Joined:
    Jul 2, 2006
    Location:
    liverpool
    Your Mercedes:
    2011 C207 350CDI;2010 C207 350CDI sport;2010 SLK300;2004 C209 320;2000 C208 230K;
    Is the flow restrictor the one that sits on top of the pump with a 2 pin plug?
     
  8. drmw

    drmw Moderator

    Messages:
    3,635
    Likes Received:
    79
    Joined:
    Nov 25, 2007
    Location:
    Yorkshire
    Your Mercedes:
    M6 Cab - prior to that, SL63 AMG, A-M V8 Vantage, SL55, SL500 and many more
    A bit under - back struts - "The original Mercedes part is £2612+VAT + fitting or, we can source an OE quality part from Germany for £1450 + VAT + fitting." (which is why mine went!!). Fronts about £1400 each.
     
  9. LostKiwi

    LostKiwi Senior Member

    Messages:
    17,941
    Likes Received:
    8,200
    Joined:
    Aug 25, 2006
    Location:
    Midlands / Charente-Maritime
    Your Mercedes:
    '93 500SL-32, '01 W210 Estate E240, 02 R230 SL500 (Malcolm Spec), 04 Smart Roadster Coupe
    MB do them cheaper than that! I'm sure I've seen prices of £880 for struts from MB.

    OP - you could try a rodeo test (on Star) to see if it does it under any particular action.
     
  10. drmw

    drmw Moderator

    Messages:
    3,635
    Likes Received:
    79
    Joined:
    Nov 25, 2007
    Location:
    Yorkshire
    Your Mercedes:
    M6 Cab - prior to that, SL63 AMG, A-M V8 Vantage, SL55, SL500 and many more
    There will be some room for negotiation, but not a lot. That was 6 months ago, my SL63 (not sure if there is a material difference) and the "quality part from Germany" bloke was an MB independent with a good reputation
     
  11. flowrider99

    flowrider99 Senior Member

    Messages:
    2,514
    Likes Received:
    761
    Joined:
    Jul 21, 2014
    Location:
    Hertfordshire
    Your Mercedes:
    SL500 / Audi S5
    I wouldn't be paying those prices for my R230. Reconditioned struts are getting towards the £500 point.
     
  12. Craiglxviii

    Craiglxviii Senior Member

    Messages:
    14,172
    Likes Received:
    3,556
    Joined:
    Sep 6, 2015
    Location:
    Cambs UK
    Your Mercedes:
    W215 CL500 Motorway Queen; W251 R320L Familybenz, S211 E320 Avg Designo Edition now sadly missed.
    OEM new struts are available from AliExpress, for the 230 for ~£700 per corner.
     
    Wighty likes this.
  13. Craiglxviii

    Craiglxviii Senior Member

    Messages:
    14,172
    Likes Received:
    3,556
    Joined:
    Sep 6, 2015
    Location:
    Cambs UK
    Your Mercedes:
    W215 CL500 Motorway Queen; W251 R320L Familybenz, S211 E320 Avg Designo Edition now sadly missed.
    That’s it yes. Not available as a separate item though.
     
  14. OP
    gassed up

    gassed up Active Member

    Messages:
    42
    Likes Received:
    14
    Joined:
    Jul 2, 2006
    Location:
    liverpool
    Your Mercedes:
    2011 C207 350CDI;2010 C207 350CDI sport;2010 SLK300;2004 C209 320;2000 C208 230K;
    I've still got one on the old pump. I didn't exchange it because I'm going to rebuild it with a new seal kit. I'll try swapping the flow valve.
     
  15. Craiglxviii

    Craiglxviii Senior Member

    Messages:
    14,172
    Likes Received:
    3,556
    Joined:
    Sep 6, 2015
    Location:
    Cambs UK
    Your Mercedes:
    W215 CL500 Motorway Queen; W251 R320L Familybenz, S211 E320 Avg Designo Edition now sadly missed.
    Did you buy Viton seals?
     

Share This Page