SBT Jetski Engines, Parts & Accessories

Results 1 to 3 of 3
  1. #1
    Joined
    Jun 2009
    From
    Cary, NC
    Posts
    9

    Default Remanufactured Jet pump/impeller - FAILURE

    I just purchased a remanufactured jet pump housing and impeller from SBT. I installed it and torqued everything per the shop manual (2001 Kawasaki 900 STS). Dropped it in the water and it ran great, I was pretty darn happy for about 2 1/2 hrs. I noticed a vibration at anything above 5k RPMs, unfortunately I was pretty far out on the lake and nobody else was around. I nursed it back as best I could, took it out and pulled it apart. The impeller was loose and dug into the sides of the housing. I just don't understand how or why. I notice that the threads on the pump shaft that screws into the impeller look sheared. I have attached pictures. I will call SBT tomorrow, I am just curious if anyone out there has a clue as to why this happened.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	housing.jpg 
Views:	367 
Size:	272.0 KB 
ID:	3121   Click image for larger version. 

Name:	impeller.jpg 
Views:	439 
Size:	227.4 KB 
ID:	3122   Click image for larger version. 

Name:	pumpshaft.jpg 
Views:	381 
Size:	162.6 KB 
ID:	3123   Click image for larger version. 

Name:	housing_vanes.jpg 
Views:	382 
Size:	243.9 KB 
ID:	3124   Click image for larger version. 

Name:	pumpcap.jpg 
Views:	330 
Size:	247.9 KB 
ID:	3125  


  2. #2
    Joined
    Jun 2009
    From
    Cary, NC
    Posts
    9

    Default Re: Remanufactured Jet pump/impeller - FAILURE

    just a quick note to the tech guys at SBT. Everything was "new" or "remanufactured" to include the pump shaft when I installed them. Everything looks the way it does now after only 2 1/2 hours in the water. I don't think I sucked anything up since the vanes don't have a scratch on them. Everything points to the impeller coming loose even after torquing it on to 72 ft-lbs per the shop manual. Thanks!

  3. #3
    Joined
    Jun 2009
    From
    Cary, NC
    Posts
    9

    Default Re: Remanufactured Jet pump/impeller - FAILURE

    Just FYI. I spoke to Tom at SBT's tech department and they have not had a problem like this with any of these products so far. I can only surmise that my torque wrench is faulty. I believe I can salvage the housing and impeller with some slight grinding/buffing. I may lose some performance but I think it will be ok. I will be adding some thread lock this time. I asked SBT if they would replace the impeller shaft at the cost of shipping and they agreed. I have to say that this is a fair deal and I am still a big fan of SBT. Everyone I spoke to at SBT was very polite and courteous.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Servicing the 2 stroke Jet Pump
    By Ericka-SBT in forum Tech Tip Of the Week
    Replies: 3
    Last Post: 07-11-2013, 01:34 AM
  2. Remanufactured Kawasaki Jet Pump Housing Examples
    By Ericka-SBT in forum Technical Articles / F.A.Q.
    Replies: 0
    Last Post: 05-29-2009, 02:48 PM
  3. Carb tuning question
    By tomsl750 in forum Polaris
    Replies: 2
    Last Post: 08-14-2002, 10:27 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
  •