1. Husqvarna Motorcycles Made In Sweden - About 1988 and older

Water pump pitting

Discussion in 'Vintage/Left Kickers' started by Quimo, Sep 10, 2020.

  1. Quimo Husqvarna
    B Class

    Husqvarna Motorcycle:
    1986 XC400
    Other Motorcycles:
    72 Triumph Bonneville 650, 13 YZ450F
    Pulled the transmission cover to change gasket on my new to me 86 400 XC and decided to change coolant and O ring for the pump housing as there was a slight external leak. When I opened it up the magnesium (?) looked pitted and with a little white built up in some areas (see attached). I saw in a previous thread that some folks suggested using epoxy to seal it up and was wondering if a West Systems epoxy will do the job (have extra from various fiberglass projects) or if something else would be better. Do you just encase the pitting or does it need to be treated first.

    Also, the oil came out looking like this (see attached) and while it’s not quite the milky coffee I would expect with significant coolant leakage, wondering if this sufficiently troubling to go through the trouble of replacing any seals that I can?

    Attached Files:

  2. wrx Husqvarna
    Pro Class

    Location:
    845 newyork
    Husqvarna Motorcycle:
    1973 to 1986 husky's various models
    Other Motorcycles:
    RM -250 / Buell / Penton 400 mc5
    pull the pumpshaft out and glass bead the surface then slick it over with JB weld or 2 part epoxy.
  3. grouty Auto Lover ...

    Location:
    South West UK
    Husqvarna Motorcycle:
    78 390WR, 78 390 AMX, 500 Humph
    Other Motorcycles:
    works 73 CCM 520, another 73 CCM520
  4. fran...k. Husqvarna
    AA Class

    Location:
    eastern ct
    Husqvarna Motorcycle:
    420ae 98wr125 2004wr250 others
    Other Motorcycles:
    electric freeride 1993 yam gts
    There is a drain hole somewhere under that pump assembly. Probably to get coolant out instead of going into the clutch/transmission oil.
  5. visiteur1948 Husqvarna
    Pro Class

    Location:
    france Europe
    Husqvarna Motorcycle:
    husqvarna only
    SAM_5665.JPG

    cancer HUSQVARNA liquid-cooled !
    epoxy ,ebay usa ,or hva factory !
    (magnesium +water+steel )