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Thread: Bearing housing

  1. #1
    bowsniper's Avatar
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    Bearing housing

    Any thoughts on the bearing housing? I see there is 2 seals with spring type o-rings, inside there is a smooth bore, then a cavity, then a smooth bore and then another spring o-ring and rubber seal.

    So what kind of grease do you use? just plain ol bearing grease? or is there some pwc stuff your suppose to use? How can ya tell when the cavity is full of grease? will it spurt out the ends or damage the seals?

    How do you know when its empty? smoke? lol

    I never really paid any attention to this part of the ski before. whats its purpose? To hold the driveshaft straight?

    I bet if it gets dry in there, those bushings get real hot. I have a brand new one for the SLX> not sure for the Pro yet. I'll have to check that.

    Would this produce a rattling sound if it were dry?

    Someone was saying about this thing has a certain fitting on it and should be changed to a zerk fitting instead?????? or am I wrong.


    Anyone ever burn one up? What happened? What did it sound like? May be some good info for everyone.


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    Have a look at these pages;

    I just bought a Polaris PWC - what should I do?

    What to do to get it running, keep it running, and avoid potential damage

    Click here for guidance to help you get your Polaris PWC running properly, and keep it on the water.

    Jet Pump Maintenance and Service

    Water is leaking into the hull around the drive shaft
    Check that the water is not coming from the small hose nipple on the speedometer pitot, which is directly below the drive shaft.
    Best way to check for leaks is to strap the hull to the trailer front and back, back it down the launch ramp until the jet pump intake is submerged, and run the engine with the hull strapped down.
    You can leave the seat off, and find out where the water is coming from.


    Replacing the seals and bushing in the through-hull assembly


    There are different versions of the through-hull bearing
    Early units with crimped ends can not be repaired, but they can be directly replaced with the newer style assembly (1996-2004, except MSX)
    Well, maybe the crimped style can be rebuilt
    Click here for a list of parts sources

    The seals tend to wear more than the brass bushing, so you probably do not need to change the bushing, unless it is worn.
    Replacement seals can be purchased from any Polaris OEM parts source, or generic seals may be installed.


    Generic Drive Shaft Seal carrier seal part# 8702 (Two required, or three?)


    www.ebearings.com SKF Rawhide 8702
    Shaft 0.875
    Bore 1.499
    OD 1.503
    Width 0.25


    SKF #563541 (22mmx38mmx8mm)

  3. #3
    Click avatar for tech links/info, donation request K447's Avatar
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    Grease with a high quality marine waterproof lithium base bearing grease. I use a synthetic waterproof grease, sold by Amsoil.

    Grease it until it starts oozing around the seals. The re-grease after each ride until you feel confident that the air pockets have been forced out.

    Some guys squeeze a little grease in there after every ride, and it probably doesn't hurt to do so. Polaris recommends longer intervals, unless riding in salt water.

    Keep in mind that excess grease will come out both ends of the bearing, so some of the grease you put in ends up in the water you ride in.

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    bowsniper's Avatar
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    I have some clear synthetic grease. sounds like that would work. i see in the pic the housing has a zerk fitting on it. was that changed?

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    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by bowsniper View Post
    I have some clear synthetic grease. sounds like that would work.
    Don't forget the marine+waterproof aspects

    I see in the pic the housing has a Zerk fitting on it. was that changed?
    In early years Polaris used a needle type grease fitting. After a few years they changed to the more standard Zerk style grease fitting.

    Many guys have replaced the original needle fitting with a Zerk, but you can also buy a needle type tip for your grease gun.

    My 2002 Virage came with the Zerk as OEM standard fitment.

  6. #6
    bowsniper's Avatar
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    OK. thank you. I'm going to get a zerk for it, More readily available for greasing anywhere insted of looking for the special needle for it.

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