Results 1 to 8 of 8

Thread: K1 oil/water pump rebuild

  1. #1
    Registered User E.L. Buff's Avatar
    Join Date
    Nov 2009
    Location
    Elmer New Jersey
    Posts
    95

    K1 oil/water pump rebuild

    my 1990 K1 has oil drip from weep hole under water pump anyone have a parts list or know of a rebuild kit ?
    thanks Ernie

  2. #2
    Liaison 20774's Avatar
    Join Date
    Sep 2005
    Location
    San Antonio, TX
    Posts
    20,125
    From an older post within the ones in the Similar Threads pane below, I figured I'd check Motobins. They show an oil/water pump repair kit...currently shows under 30 British pounds. So, there appears to be sources out there.

    https://www.motobins.co.uk/
    Kurt -- Forum Liaison ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  3. #3
    Registered User AntonLargiader's Avatar
    Join Date
    Jul 2004
    Location
    Charlottesville, VA
    Posts
    2,121
    I rebuild them, and usually have all of the parts in stock. There are a few special tools that greatly simplify the process, so it's not a great DIY project.
    Anton Largiader 72724
    Tech articles - YouTube
    Virginia Motorrad Werkstatt BMW motorcycle service and repair in central Virginia

  4. #4
    Registered User
    Join Date
    May 2008
    Location
    Western Massachusetts
    Posts
    311
    It seems like every 80's vintage K I owned would leak coolant, usually within a year of my buying it (used). I did a lot of oil/water pump rebuilds, back when BMW sold a kit. Did them with no special tools as I recall.
    When I moved up to 90's vintage K11s, the first rebuild I did failed, as it continued to leak. At that point I switched to buying used pumps instead of rebuilding. Never went back.

  5. #5
    Registered User
    Join Date
    May 2004
    Location
    boise, idaho
    Posts
    161

    water/oil pump rebuild

    You can find videos on YouTube that show the steps to rebuild these pumps.

  6. #6
    Registered User
    Join Date
    Nov 2009
    Location
    Phila
    Posts
    115

    Get the upgraded parts compared to my orig. 85 K100RS pump.

    My 85 K100RS had an old "style" shaft that I upgraded with the rebuild. The old shaft used a nut onto a stepped down shaft, well the step down cracked, loose at first, and oil and water mixed. The upgrade used a bolt into a tapped hole that will last a lot longer.

  7. #7
    Registered User drneo66's Avatar
    Join Date
    Jun 2009
    Location
    Rochester, MN
    Posts
    381
    After a lot of review this summer, I determined that this particular job is best left to a professional. I was able to take the water pump out of the bike, take it to the dealer, and have them put in new seals. The cost associated was on par with me buying a kit, doing a botched job, then having to install yet another kit (Plus it's under warranty for a while, in case they also messed up)
    Current: 2007 BMW R1200RT
    Former: 1995 BMW K75S, 2009 BMW G650GS
    MOA Member #:150400, IBA#: 37558

  8. #8
    Registered User
    Join Date
    May 2008
    Location
    Western Massachusetts
    Posts
    311
    Buy your dealer a drink. Or drop his name to promote his business.
    There are few remaining who will undertake a rebuild, instead of simply installing a new unit.

Similar Threads

  1. 1986 k75 oil/water pump rebuild
    By Beemahdad in forum Flying Brick K-bikes
    Replies: 2
    Last Post: 06-03-2014, 02:38 AM
  2. Oil/Water Pump Rebuild - 1996 K1100LT
    By davidbufo in forum Flying Brick K-bikes
    Replies: 10
    Last Post: 02-16-2014, 03:36 PM
  3. '90 k75s Oil/Water pump rebuild
    By cniccore in forum Flying Brick K-bikes
    Replies: 3
    Last Post: 06-14-2013, 03:55 PM
  4. K75 Oil/water pump rebuild question
    By Recker1 in forum Flying Brick K-bikes
    Replies: 4
    Last Post: 06-27-2012, 12:03 AM
  5. '87 K75S: rebuild or replace water pump
    By kentuvman in forum Flying Brick K-bikes
    Replies: 6
    Last Post: 07-15-2011, 02:05 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •