96 GTX leaking / sinking issue

[markseck]

I have a 96 GTX that suddenly started cavitating while getting on the plane, it acts like it has weeds but it is clear, and it leaks very quickly when sitting still. I replaced the wear ring last year, so I dont think it that. I checked the rubber gasket on the inside of the motor and it is in good condition but I can pull it back towards the rear of the ski and it doesnt seem to have anything to seal it to the shaft. The ski takes on water quickly, when I pulled it out I could see the water leaking out of the hull around the shaft. What do I need to do to fix this, to give you an idea of the leak, it would sink in an hour if left in the water... pretty significant. can anyone help with the repair ? thanks,
Mark

 

[kustomkarl]

Mark if you look in the manual it will give you a break down of the assembly of the shaft. It sounds like the seals are bad and need replacing. Also check the fiberglass around where the black boot is clamped in place for any cracks. It Shouldn't be leaking at all.

Karl

 

[RX951]

the carbon seal is worn. I would replace it with the updated carrier bearing type seal. I would alsp check for trash in the carbon seal. they can wear, suck in air and cause cavitation

Here is the typical carbon style seal

you'll have to remove this accordian seal and pull the carbon ring back to pull the c-clip

I would install this type of seal. It is the updated carrier bearing style seal with a grease fitting. More reliable.
Also, don't forget to change the neoprene seal when you pull the pump to take the old carbon seal out.

 

[RX951]

Here is the diagram. You have to pull the pump assembly also. Easy to do

4 bolts that hold it to the hull, steering s trim cable and make sure all the hoses are disconnected inside the hull. 2 clear Bilge hoses and water line(s)

 

[derek]

updated? this looks backdated. did they go back to the early 90's style of seal? i always liked it better. carbon ring is maint free, but that means you can't maintain it.

 

[JPX]

More visual aids:


It should hold out wateron it's own spring tension. If you pull back on it, then it may let in some water.

Slack is normal out of water - but in water, it should "self seal".

 

[markseck]

Hey thanks for all the info. a couple more questions, do I need any special tools like a shaft puller or alignment tool or anything?
Thanks,
Mark