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Thread: '90 k75s Oil/Water pump rebuild

  1. #1

    '90 k75s Oil/Water pump rebuild

    Through my incredible skills of deduction, coolant with a touch of oil collecting in the lower fairing just below the weep hole of the pump, I have deduced that it is time to rebuild the pump. I am looking for any and all assistance in performing this repair. I am quite capable, but I feel that it is always best to enter into the relative unknown adequately armed with as much information as possible. A complete parts list, and advice would be greatly appreciated.

  2. #2
    Yep that happened to me. Make sure your engine oil isn't contaminated. You will need to flush if it is. Pump is not hard to rebuild and sure will save you a lot of money if you do the work.

    Good info here on the forum and at these articles and MooVs
    Expect The Unexpected

  3. #3
    Registered User
    Join Date
    Nov 2009

    K100RS 85 w 148k mi. I rebuilt my pump and wrote about about 05-25-2013, 10:21 PM on

    A few notes written in the K bike section of this forum on 05-25-2013, 10:21 PM. Possibly other times as well.

  4. #4
    Registered User 58058D's Avatar
    Join Date
    Jun 2007
    Mendocino, CA USA about as far left as you can get in the lower 48
    Yep, there are lots threads on this. I have pulled mine several times on each Brick except the K12. I only tried installing the seals myself once and botched it. So, from then on, I resorted to pulling the unit and having my dealer do the seal install when I purchased the seals. Sometimes I had to drop it off for a day, sometimes they could do it on the spot. Never a lot of money, but better than having to do it twice and buy the parts twice. Removal and installation is cake, just be sure your Three-Bond or equivelant does not plug any of the galleries and you are set.
    Jim Douglas '00 K1200RS >138,000 miles -- Black, 01/10/2000 to present
    Gone: White '09 K1300S sold @ 22k mi, Black '93 K1100RS traded @ 78k mi, Red '85 K100RS sold @ 44k mi, '06 Kaw 650R chrome yellow track bike sold

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