SoCal Jet Boats

Tech Talk => Jet Pumps => Topic started by: tmorgan on March 30, 2017, 10:36:12 PM

Title: Help needed berkeley 12 jc
Post by: tmorgan on March 30, 2017, 10:36:12 PM

So I just rebuilt my pump mounted it and hooked it up to the engine and can't get the motor to turn over so I'm assuming something in the pump is jammed. I just had the engine running so I know the problem isn't there. Has anybody had this problem and any pointers?


Sent from my iPhone using SoCal Jet Boats

Title: Re: Help needed berkeley 12 jc
Post by: Steveo909 on March 31, 2017, 07:21:13 AM

Can you spin the pump when it's unhooked from the engine?



Sent from my iPhone using SoCal Jet Boats

Title: Re: Help needed berkeley 12 jc
Post by: tmorgan on March 31, 2017, 01:08:42 PM

No I can't. I think I have it figured out after thinking about it. I think the impeller is stuck against the bowl stuffer so it might need some machining to work but I haven't pulled it back apart yet.


Sent from my iPhone using SoCal Jet Boats

Title: Re: Help needed berkeley 12 jc
Post by: damfoo on April 03, 2017, 04:14:05 PM

ya, if you didn't machine the bowl to allow for the stuffer plate thickness that would certainly do it. How thick is the plate?
how did you go about verifying the clearance of the impeller to wear ring? Shouldered wear ring or non-shouldered?

Title: Re: Help needed berkeley 12 jc
Post by: tmorgan on April 06, 2017, 08:48:47 PM

The stuffer was installed previously. I used a feeler gauge to check the clearance and everything spun freely until I tightened the bowl down. I'm still stuck I can hear something rubbing inside when I loosen the bowl and crank the pump by hand


Sent from my iPhone using SoCal Jet Boats

Title: Re: Help needed berkeley 12 jc
Post by: tmorgan on April 06, 2017, 10:13:15 PM

Non shouldered standard wear ring the stuffer looks like 1/4 plate


Sent from my iPhone using SoCal Jet Boats