LC4 Water Pump - Plastic impeller shattered

Discussion in 'Thumpers' started by ciukes, Apr 26, 2013.

  1. ciukes

    ciukes ciukes

    Joined:
    Apr 25, 2011
    Oddometer:
    25
    Location:
    London, UK
    Hi guys,

    Reviewing recently purchased 640 '01 I discovered this
    [​IMG]

    The bike has 5000 miles on the counter but lots of owners. I suspect it was ridden in off-road a lot. I replaced the impeller and checked all the hoses and drained water and I found all the impeller bits.

    Question: Should I be worried about plastic impeller being shattered? Can this signal a major problem I'm not aware of or this "just happens" ?
    #1
  2. gunnerbuck

    gunnerbuck Island Hopper

    Joined:
    Nov 19, 2005
    Oddometer:
    5,140
    Location:
    N.V.I, B.C.
    Did you rebuild the water pump? With the bike being 12 yrs old it would be worthwhile to replace those old rubber seals in the pump...
    #2
  3. Seikkailu_R

    Seikkailu_R Been here awhile

    Joined:
    Jun 18, 2007
    Oddometer:
    871
    Location:
    Piikkiƶ, Finland
    Bolt and washer look suprisingly fresh for that old bike?

    But its not very common to impeller shatter like that.
    Maybe there was something gone/made wrong on previous maintenance...
    #3
  4. ciukes

    ciukes ciukes

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    Apr 25, 2011
    Oddometer:
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    London, UK
    Certainly it is a goog idea:) That's what I'm doing right now.
    #4
  5. ciukes

    ciukes ciukes

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    Apr 25, 2011
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    London, UK
    Makes me think somebody replaced it over time.

    That's the only explanation I could come up with.

    Anyway impeller is replaced now and all the cooling circuit is going through review in search for old impeller's bits :/
    #5
  6. rz35027

    rz35027 Been here awhile

    Joined:
    Dec 9, 2007
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    Location:
    Vancouver BC
    Try to match all the larger bits to the broken impeller to make sure you get it all...

    I had an overheating problem when I first got my bike, after having to tear the engine down I found bits of impeller blade jammed in the coolant tract behind/infront of the carb. Apparently the P/O had just installed a new impeller and sold the bike :bluduh

    My best guess was mechanical error or he had kicked the bike over when it was frozen(?)
    #6
  7. Droptarotter

    Droptarotter Long timer

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    Jul 11, 2007
    Oddometer:
    1,486
    Location:
    Cloverdale,BC

    That's the most probable answer there!

    Cheers
    #7