SoCal Jet Boats
Tech Talk => Jet Pumps => Topic started by: Jason1978nordic on May 18, 2008, 10:55:38 AM
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O.K. so the new motor is running really good got all the bugs worked out and went out yesterday to make a few carb adjustments low and behold im idling in the no wake zone to the dock and I suck a peice of stick up the intake and pick up a bad vibration and the boat dont want to go........so I get her home and commence to tear the back half of the pump apart being convinced by other people who are on the dock that I blew up the impeller due to horsepower....I dont have a clue but I am a mechanic and machinist....now comes the part where I ask all you guys stuff again this impeller has big gouges in it I have to build a socket to get the impeller off...........then ill build a puller to get this junk impeller off ...what do I look for clearances and where do I check them with the back of the bowl off I have about thirty thou up and down and no endplay in the shaft I want to go with a different impeller and Im thinking I want to change the loader grate also.......................and you guys that contacted me before ,Ralph,Rod ,Tim,Tom ill be in touch soon I want to build a nice piece out of this so............Im gathering info the impeller looks to be 9 1/4 inches not sure till I get it apart the rest of the way
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They make a deep socket for the impeller nut, but it takes a damn good impact. The last 3 pumps I have taken apart I had to cut the impeller nut off, with a diegrinder getting it as close to the shaft as possible, and then a chizzle and a hammer to try and crack the nut off and spin it. There's also an impeller pulling tool to get off the impeller, but sometimes those get stuck too and you have to cut them off. Good luck
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Internal pump work is way over my head at this point in time.
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I bought the impeller socket and the puller. The nut was a bitch to take off and the impact wrench did do the job but only after refilling the 60 gal tank a couple of times. Once it was off, I didn't need the puller, the impeller darn near fell off into my hands. I'm keeping the tools just in case at a later date I need them. The hard part was holding the shaft while the impact did it's job. I stuck a SS bar through the drive line and that worked.
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This nut is regular threads is it not............righty tighty.....lefty loosey?????????someone has just destroyed the nut on here now and im just checking before I get the grinder and chisel out :banghead:
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It's regular thread.
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Jason,
Get a cheapo socket at NAPA (13 bucks) and cut it apart then square it up on the lathe and then weld a section in. I also made a puller.
Go here and you can get an idea.
http://www.tjsperformance.com/jetboat_tech.htm
T.J.
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Jason,
Get a cheapo socket at NAPA (13 bucks) and cut it apart then square it up on the lathe and then weld a section in. I also made a puller.
Go here and you can get an idea.
http://www.tjsperformance.com/jetboat_tech.htm
T.J.
That's easy for you to say... ;D :D ;D What if you don't have a lathe, or a way to cut apart a $13.00 socket, then rebuild and weld it all back together? I didn't have that luxury so I bought it from Berkeley.
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Thanks guys I am currently building tools in my barn........time to buy an impeller some other stuff..................
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Thanks guys I am currently building tools in my barn........time to buy an impeller some other stuff..................
Jason, Buy the complete rebuild kit, it's cheaper. ;)