Super Jet Pressing a pump together

[swapmeet]

Since i'm still learning I figured i'd ask rather than guess.

I have a freshly shortened shaft (insert penis jokes here).
Fresh bearing
pump body.

I dont have a press, but I know a guy LOL... but seriously I do know a guy.

What order should I press everything together? bearing on shaft first or bearing in pump, and then shaft into bearing. Its all very confusing and like I said, i'd rather do it right than screw it up 'learning'.
Also which way does the bearing face?

 

[Tyler Zane]

ok been there... got home and the shaft was sticking out the pump cone side lol. slide one bearing down the long side of the shaft and press that one on. then press that into the pump, and press the other bearing in from the back. you will have to find something to press the rear bearing in all the way.

i have heard of people beating them in but in my mag pump there was no way. they had to be pressed in.

 

[Proformance1]

In the manual is says install brg in the case first so a 2" OD pipe would work nice here, as the only friction is on the outside of brg to housing wall. Install grease, then press brg onto shaft, back side, using a press, then install brg and shaft into housing. Again I'm going to use a 2" OD pipe as it will support the bearing and not hit the case wall.
Im just sawing a 2" od pipe as we speak for reinstalling the bearing in a press

 

[Tyler Zane]

or you can do it the correct way like proformance1..lol (ill probably do it the correct way next time)

i know i have about 100 gallons threw mine with no problems

 

[Midlake Crisis]

Take your time and follow the manual - I just screwed this up and had to redo it.
Then I screwed it up again by forgetting to put grease in the void between the bearings, so I filled it with 90w gear oil rather than risk buggering the bearings by pressing them out a third time. The key on this one is having the right tool to put pressure on the innner and outer rings of the second bearing so that it doesn't jack up the inside of the bearing race.

 

[swapmeet]

I believe the front bearing is still installed. It didn't come out when I disassembled the pump. So if I install the shaft, do you think it will pop out? I guess its just a matter of friction.

I should have some 2" pipe laying around, if not I can get it.

 

[swapmeet]

Take your time and follow the manual - I just screwed this up and had to redo it.
Then I screwed it up again by forgetting to put grease in the void between the bearings, so I filled it with 90w gear oil rather than risk buggering the bearings by pressing them out a third time. The key on this one is having the right tool to put pressure on the innner and outer rings of the second bearing so that it doesn't jack up the inside of the bearing race.

I don't have a copy of the manual. Is it imparative that I read it?

 

[Midlake Crisis]

Follow Tzane's instructions, fill the void w/ marine grease before you press in the second bearing, and use the right size tool to protect the second bearing.

 

[Tyler Zane]

i used 80wt oil made by quicksilver. just toped her off while the pump was out and right side up. but my way seemed to be the best way at the time. the way that proformance1 said before makes since too. either way you should be good.

 

[Proformance1]

Only thing I am doing different is using a 1" id by 2" OD pipe on the second bearing install to not put pressure any place on the second bearing. I still see an issue doing it this way as the bearing that is in the pump already is being center loaded by pressing in the second bearing, but the yamaha manual says to do it this way, and the only way not to do it like that would be to make an approximate 1" id by 1.45" od pc that would sit with the drive shaft going through it and being supported from below. Then add the seals after, the manual says to install seals before installing second bearing so I dont see it being an issue. Possibly lighter tolerance on the shaft there. Ill measure and check when i put together, hopefully tomorrow night.

 

[swapmeet]

whoa whoa whoa... seals? Besides the tail cone, what seals are there?

 

[Tyler Zane]

whoa whoa whoa... seals? Besides the tail cone, what seals are there?

you being serious? there are two behind the prop. they slide down the shaft and get pressed in. or beat in like i did mine...

 

[ridethelip]

Install new seals in pump grease seals, pack both brgs with grease,press both brgs on driveshaft and press driveshaft with brgs into pump housing (much easier than the 1 brg at a time method). The packing of grease between brgs is not needed and will do nothing to extend brg life.When a seal goes bad all the grease in the world won't stop the damage that is soon to follow.Pull cone to inspect grease for presence of water when replacing wear ring or having impeller serviced.If water is found replace brgs and seals and inspect driveshaft where seals contact driveshaft.

 

[easyrhino]

If you don't have a press will a theaded rod, nuts and fender washers washers on both ends work? May have to stack up the washers.

 

[ridethelip]

If you don't have a partner use a wooden chair. Easyrhino if you love to ride jetski's , motorcycles buy a press it will make your life so easy.Suggest you have someone with experience show you how 1 time.The press can just as easily destroy things without the right technique.You could use a pipe and blocks of wood and a hammer but the brgs will thank you with a longer life if pressed in.

 

[easyrhino]

I've been schooled on gearcases (OMC factory). Some factory's special tools use a screw type press. And I've built them to company specs as a toolmaker.

You would put the treaded rod thru the housing. Put some thing like a washer that could handle the load, then the nut on one end. This would come in contact with the housing. Side the bearing on thread rod on the other end. Then the pipe or socket to make contact with the outer race. A washer and a nut. Alien it up and tighten.

It would be an easy tool to manufacture. Wouldn't take much space store. Make it work on the mid-shaft housing.


This is the Mercruiser I/O pinion bearing install/remove kit. That black think makes contact with the housing. The middle thing is a nut. the right thing looks like the other nut with needle bearings that makes contact with outer race.
me thinks.

This tool is necessary because there is no flat or squared up surface on the housing to rest on a press.

 

[ridethelip]

You got skills if can repair those gear cases.That set up would work on the install but when you press the drive shaft and or mid shaft out it leaves the bearings in the pump housing or mid shaft dampner.This is where with minimal work the press gets the job done on removal.

 

[easyrhino]

<nod> it's a press fit on the I/O pinion shaft and bearing also.
It would sux bringing home something as big as a press. The wife would want a counter purchase the same size, like new couch.

 

[Midlake Crisis]

I got a super close out deal at Pep Boys on a hydraulic press for like $40.
Wasn't even in the market for it, just couldn't pass it up. It is a cool thing to have stashed in the corner of the garage.

 

[ridethelip]

The wife would want a counter purchase the same size, like new couch.[/QUOTE]
Are all wives the same? ha,ha,ha
Wait, this could work. I did a side job on a late model Ford thunderbird replacement of a rear wheel brg. Ford sells the hub and brg as an assembly and it sells for like 9 hundred. Cough,cough
I could not find this brg at any auto parts or brg house.Looked on ebay and there it was.So you use your press to make money and buy more stuff to keep your ski on the water, I mean couch for wife.