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rattling seadoo
- Thread starter tony8a
- Start date
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If it does it on the hose on the trailer, it is most likely the nose cone in the Jet pump assy. In the water there is pressure on the thrust bearing in the jet pump and you don't hear it. Out of the water there is no load on the impeller so it will have a small amount of end play that will have a rattle noise...normal. There are kits out there to get rid of the noise, but after a short time it will do it again.
Karl
Karl
Check the case covers or maybe motor mounts...something that would experience vibration is my first guess.
Karl
Karl
phough5757
New Member
One inch long?
R.V. cover bolts, Exhaust manifold bolts.
Use a mirror and look around.
Good luck!
R.V. cover bolts, Exhaust manifold bolts.
Use a mirror and look around.
Good luck!
tony8a
New Member
no!, didnt you guys see those funky replies that got removed! it was weird! i was not refering to the members' answers.
we are actually getting some rain down here!, and i am working out of town , so no play with the toy for right now. i will look at it this weekend!
thanks for the replies/ideas!
we are actually getting some rain down here!, and i am working out of town , so no play with the toy for right now. i will look at it this weekend!
thanks for the replies/ideas!
Thrust bearing?
I know I have written about this at least ten times but I never get tired of talking about it.
In our axial flow pumps, there are three bearings, two journals which take up radial movement of the shaft.
On the end of the impeller shaft, right at the edge of the cone, is the thrust bearing.This is designed to take up axial play. Anyone who has had there pump off knows that when you grab that shaft, you can push/pull it back and forth, thats the backlash and the source of the noise.
On land, when the motor is running, there is no thrust being generated by the impeller. The shaft has the freedom to move with that slight back and forth movement in the backlash. Thats where you here the noisy chatter. They make a tension spring and plate to eleminate it but don't waste your money. It usually only last a month or so.
When you put the impeller in water, it has the water to torque up the nozzle, pushing and riding against the thrust bearing. So, it's doubtful you'll hear it.
The new design in the 4-TEC pumps uses a different bearing configuration with grease as a lubricant, similar to your wheel hubs on a car, so they don't create that rattle.
There is my crash course on the thrust bearing......:cheers:
I know I have written about this at least ten times but I never get tired of talking about it.
In our axial flow pumps, there are three bearings, two journals which take up radial movement of the shaft.
On the end of the impeller shaft, right at the edge of the cone, is the thrust bearing.This is designed to take up axial play. Anyone who has had there pump off knows that when you grab that shaft, you can push/pull it back and forth, thats the backlash and the source of the noise.
On land, when the motor is running, there is no thrust being generated by the impeller. The shaft has the freedom to move with that slight back and forth movement in the backlash. Thats where you here the noisy chatter. They make a tension spring and plate to eleminate it but don't waste your money. It usually only last a month or so.
When you put the impeller in water, it has the water to torque up the nozzle, pushing and riding against the thrust bearing. So, it's doubtful you'll hear it.
The new design in the 4-TEC pumps uses a different bearing configuration with grease as a lubricant, similar to your wheel hubs on a car, so they don't create that rattle.
There is my crash course on the thrust bearing......:cheers:
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