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  1. #1
    Join Date
    May 2016
    Location
    Detroit
    Posts
    17

    Default Haldex Pump Access - are there any options? Please help NOW!

    I am replacing my bad Haldex pump (2005 XC70). I have VIDA and am fairly clear on most steps but I have a few questions for those who've done this before.

    My car has the big AOC damper that has to be removed. I'm little confused about how to give the rear driveshaft enough room to move forward out of the damper. VIDA MANUAL STATES:"Note! for cars with damper...the center bearing member should be removed and the propeller shaft fully tilted to free the rear joint"

    QUESTION 1) how far down does the driveshaft center bearing member need to move to free the shaft at the rear? Volvo manual says to leave forward exhaust system on the car but the driveshaft center bearing member is directly above the converter.

    QUESTION 2) the nuts and studs that connect my cat-back part of the exhaust to the cat converter are impossibly rusted (just a lump of rust)..any advice on how to deal with this? or can I get away with just lowering the whole exhaust a bit??

    Thanks in advance!

  2. #2
    Join Date
    Feb 2013
    Location
    Boston, MA
    Posts
    1,132

    Default

    I just removed exhaust from all hangers and left it on the floor. It cleared enough room for driveshaft to be tilted down. The car was on four 6" ramps.
    2002 V70 (sold)
    2005 XC70 (Telos Road took it. Did a chassis swap)
    2016 XC60

  3. #3
    Join Date
    May 2016
    Location
    Detroit
    Posts
    17

    Default

    Quote Originally Posted by vtl View Post
    I just removed exhaust from all hangers and left it on the floor. It cleared enough room for driveshaft to be tilted down. The car was on four 6" ramps.
    Thanks! I ended up taking off the rear portion (had to cut the rusty studs and nuts). I also repaired a rusted off exhaust hangar with the bolt-on Volvo replacement kit.

    I have AWD again!

  4. #4
    Join Date
    Feb 2013
    Location
    Boston, MA
    Posts
    1,132

    Default

    Cool!

    Did you split your old pump to see why it died? Mine is still laying somewhere in garage...
    2002 V70 (sold)
    2005 XC70 (Telos Road took it. Did a chassis swap)
    2016 XC60

  5. #5
    Join Date
    May 2016
    Location
    Detroit
    Posts
    17

    Default

    Quote Originally Posted by vtl View Post
    Cool!

    Did you split your old pump to see why it died? Mine is still laying somewhere in garage...

    I didn't, but I wondered if I should donate it for forensic use
    Mine was working at startup until the vehicle was driven for more than about 20 minutes, then it would stop (or pump too weakly??)

  6. #6
    Join Date
    Feb 2013
    Location
    Boston, MA
    Posts
    1,132

    Default

    Quote Originally Posted by EastOfGratiot View Post
    Mine was working at startup until the vehicle was driven for more than about 20 minutes, then it would stop (or pump too weakly??)
    Any sludge spotted on the filter or pump's mesh?

    Mine was working intermittently. During replacement I found a wet ring around pump and leaking O-ring. Could be it just had enough oil leaked out and a simple refill might bring it back to life. But gaining access to the pump is not the easiest thing on Earth, so it totally made sense to assure the next 10 years free of Haldex problems with a new pump
    2002 V70 (sold)
    2005 XC70 (Telos Road took it. Did a chassis swap)
    2016 XC60

  7. #7
    Join Date
    May 2016
    Location
    Detroit
    Posts
    17

    Default

    Quote Originally Posted by vtl View Post
    Any sludge spotted on the filter or pump's mesh?

    Mine was working intermittently. During replacement I found a wet ring around pump and leaking O-ring. Could be it just had enough oil leaked out and a simple refill might bring it back to life. But gaining access to the pump is not the easiest thing on Earth, so it totally made sense to assure the next 10 years free of Haldex problems with a new pump
    The pump's mesh was amazingly clean. The oil filter was dark but not sludgy. The fluid looked pretty clean for 145,000 miles. I'll take a closer look at the pump tonight. Nothing caught my eye but I'll take a closer look at the o-rings. My VIDA/DICE history record showed that my Haldex had this pump issue over about half of the past 700+ drive cycles (starting WAY before I owned the car). I don't know what triggers the fault code....incorrect voltage from the pump?..or complete stoppage?

    I too am glad that I replaced the pump and filter (the new filter cap is the coolest looking part on the car). I don't want to go through all the hassle of getting to these parts again!

    Now I'm hoping for another round of heavy snow so I can enjoy reliable AWD and my new BFG KO2 tires!

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