new impeller install question

[blake903]

so i got my old wear ring out and new one installed, also got a new nujet impeller but when i tighten it down its like it almost locks the shaft and impeller up, i installed all washers back how they were when i took it off. It spins super freely with perfect clearance with it barely hand snug so everything is straight but im just clueless. someone please help me out if you can..

 

[seadooya]

what washers? If you removed the impellor and cut/install the wear ring, then the impellor just spins back onto the shaft.

Did you remove the impellor shaft and componants inside the pump assy?, if so, then you messed up the thrust bearing..etc

 

[Chester]

Yup, you'll have to take it apart again and get a new thrust bearing as you most likely pinched it.

Chester

 

[blake903]

yea i did pull the shaft out that goes through the impeller, is the thrust bearing the one on the end of the shaft that sits next to the washer? (just a round ball bearing) and what do i do to fix it?

 

[seadooya]

#15

http://partsfinder.onlinemicrofiche.com/seadooforums/Seadoo_oem/Seadoo_PWC.asp?Type=13&A=73&B=20

 

[blake903]

how do i know if the bearing is bad?

 

[blake903]

could someone define pinching the thrust bearing, because i don't really see how this could go bad, i took it back apart and it seems fine

 

[Dennis]

The thrust bearing can get pinched because it is not aligned with the shaft and the thrust washer when you assembled it. As you tighten down the impeller it gets pinched because it is off to one side or the other which usually destroys the thrust bearing.

DAWG

 

[Chester]

Post a pic.

Chester

 

[blake903]

i have no clue what was causing it to bind but i put it all back together again and now it spins freely after i torque it down. I do have a question though, how does the motor and the drive shaft separate so that i can hoist the motor out

 

[voodoo]

When you observe the cleaned bearing look for blue color from overheating, if you drain out any sparkles or milky oil this indicates failure and water leaking in - sparkles needs new stuff inside, look at everything closely. If you place the flat bearing on a piece of glass it should lay flat, the previous responses are thinking you may have bent the stamped retaining housing - if you did this will shoot out the tiny rollers and start to damage the flat inside the pump housing similar to a neglected bearing failure, be certain that thrust bearing is flat, to remove the motor removal of the pump and shaft is typically easier when the motor goes back inside as trying to balance and wiggle is a cramped location trying to observe the mounting pads, wires nearby, and alignment time is longer than the pump removal.

 

[blake903]

well sh** i just got the whole pump put back together last night with loctite, so the actual shaft doesn't come apart from the motor? the whole shaft where it connects to the impeller will slide out?

 

[blake903]

and the thrust bearing was not burnt at all, and i laid it on a table and it spun around freely, i thought the only thing that could be pinched would be the little wheels around the outside (like the part to a ball bearing), but they were all circular and i figured they would be oval shaped if it were pinched.

 

[seadooya]

depending on whhat type "water seal" you got in your ski..either carbon ring assy or the bearing carrier, either way, need to undo the little clamp around the small boot off the pto, to allow th driveshaft to exit the pto, then theres a clip/o-ring behind the "steel collar" on the carbon ring assy to undo, then pull shaft outward