Thread: Mikuni oil pump assembly
10-09-2014, 09:19 PM #1
10-09-2014, 09:30 PM #2
The main drive pin is held in by the tiny pin It's put through the tiny hole under the bottom plate. You can see the hole on the pic below. The piston gear goes on through bottom then the throttle pin slides in. The small U shaped piece goes in through bottom and locks the throttle pin in place. Put the bottom plate on. The spring goes into top then the piston slides in on top of it. Turn the piston until it bottoms out. Put top plate on and you are done. Very simple design but I failed to visualize where everything went during disassembly and the U shaped piece through me off. I also kept putting the spring between the top plate and the piston.
10-09-2014, 09:33 PM #3
10-10-2014, 01:11 AM #4
- Join Date
- Jul 2007
- near Toronto, Canada
Thanks for posting the photos.
I am still having trouble visualizing how the pump actually pumps the oil.
Is the oil flow positive displacement for each oil outlet? If one outlet is left unconnected do all the other oil pump outlets also lose oil pressure?
10-10-2014, 10:50 AM #5
I would say no they both don't lose pressure. The piston moves up and down and also turns in the cylinder. The holes on the sides of the piston is what directs oil to the outputs.
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By lemon4879 in forum Sea Doo ClassifiedsReplies: 1Last Post: 07-13-2013, 06:37 PM
WTB - Parts WTB front oil pump assembly ASAP!!!!By b_dolla44 in forum Sea Doo ClassifiedsReplies: 0Last Post: 07-31-2012, 01:25 AM
By Louis914 in forum Sea Doo ClassifiedsReplies: 2Last Post: 05-16-2011, 12:19 AM
By jetmaniac in forum Yamaha ClassifiedsReplies: 6Last Post: 10-26-2009, 05:47 PM
By christiaan in forum Polaris Open DiscussionReplies: 4Last Post: 06-06-2008, 08:36 AM