Self levelling shocks 740

Discussion in 'Volvo 740' started by not hereplease, Jun 2, 2004.

  1. I apologise for a similar posting for the shocks.
    My shocks are quite thick with a rubber gator on the bottom, are these self
    levelling.

    Is it possible to pump the shocks up if so how
     
    not hereplease, Jun 2, 2004
    #1
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  2. not hereplease

    Rusty Guest

    The Nivomat self levelling shocks you speak of are pumped up from under the
    hood. If the shocks are sagging, you'll need to replace them, not two ways
    about it. They are expensive. It's actually cheaper to buy regular shocks
    and new springs than to replace the Nivomats. I did that on mine, and it's
    great.

    good luck

    RS
     
    Rusty, Jun 3, 2004
    #2
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  3. not hereplease

    Peter Milnes Guest

    They would appear to be self-levelling shock absorbers (Nivomats). It is not
    possible to pump these up. If they have lost their effectiveness then
    replacement is the only real answer. Be prepared to pay a largish amount,
    especially as they should be replaced in pairs.

    Cheers, Peter.

    : I apologise for a similar posting for the shocks.
    : My shocks are quite thick with a rubber gator on the bottom, are these self
    : levelling.
    :
    : Is it possible to pump the shocks up if so how
    :
    :
    :
     
    Peter Milnes, Jun 3, 2004
    #3
  4. not hereplease

    Mike F Guest

    The shocks are "pumped up" using the motion of the suspension. So even
    with good Nivomats, the rear of the car sags after being loaded, but
    before being driven. After going over a few bumps the rear comes back
    up to normal height. Most Nivomats fail when the seals start to leak
    this "leveling pressure" out when at rest. After a drive the car looks
    normal, but the next morning it's sagged. Slowly this gets worse until
    the pressure leaks out as quickly as it can be pumped in.

    --
    Mike F.
    Thornhill (near Toronto), Ont.

    NOTE: new address!!
    Replace tt with t (twice!) and remove parentheses to email me directly.
    (But I check the newsgroup more often than this email address.)
     
    Mike F, Jun 3, 2004
    #4
  5. not hereplease

    Rusty Guest

    Mike, I must be confused here; When I removed my Nivomats, I also removed
    what appeared to be a pump mechanism from under my hood, which I was told
    controlled the shocks. Can you clarify?

    RS
     
    Rusty, Jun 3, 2004
    #5
  6. not hereplease

    Mike F Guest

    Assuming you have a 87 or earlier 760 with the auto climate control
    (ACC), that is a vacuum pump for that system. Was it mounted above the
    battery? When you removed the Nivomats were there any hoses connected
    to them?

    --
    Mike F.
    Thornhill (near Toronto), Ont.

    NOTE: new address!!
    Replace tt with t (twice!) and remove parentheses to email me directly.
    (But I check the newsgroup more often than this email address.)
     
    Mike F, Jun 4, 2004
    #6
  7. I had a setup like that on one of my 240s; they were retrofitted
    self-levelling shocks, but they weren't Nivomats.

    Nivomats don't require an external pumping system.
    --

    Stewart Hargrave


    For email, replace 'SpamOnlyToHere' with my name
     
    Stewart Hargrave, Jun 4, 2004
    #7
  8. not hereplease

    Rusty Guest

    Yes Mike, the pump was mounted above the battery. I simply removed the T
    fitting and reconnected the air line after removing the pump.

    RS
     
    Rusty, Jun 4, 2004
    #8
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