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  1. #1

    Default Lower Unit Blues

    I put a new water pump and replaced the 2 shaft seals under the new water pump, replaced the 2 prop hub seals also. Motor pees like mad now which is great. I checked the lower unit and tons of water in there. Drained it, refilled, replaced the o-rings on the lower unit screws, ran it last night in lake and still tons of water in the lower unit. When I was fishing the outer prop shaft seal out I gouged the inside of the inner hub a tad. Not the shaft, just the inner hub. Could this have screwed me?

  2. #2
    Join Date
    Sep 2010
    Posts
    19,068

    Default Re: Lower Unit Blues

    Some sealer would likely take care of a wee gouge.----Did you replace shift rod o-ring ?----Model # of the motor ?

  3. #3

    Default Re: Lower Unit Blues

    I actually did smear a bit of sealant over the wee gouge prior to pressing the seals in the hub. When you say shift rod o-ring do you mean there is an o-ring where the lower metal shift rod enters lower unit in image? If so I did not monkey with that. Is that removeable?Click image for larger version. 

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  4. #4

    Default Re: Lower Unit Blues

    Quote Originally Posted by jwales2112 View Post
    I actually did smear a bit of sealant over the wee gouge prior to pressing the seals in the hub. When you say shift rod o-ring do you mean there is an o-ring where the lower metal shift rod enters lower unit in image? If so I did not monkey with that. Is that removeable?Click image for larger version. 

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    Yes.Look at the parts diagram.O ring down inside the brass bushing where rod goes thru.

  5. #5

    Default Re: Lower Unit Blues

    Quote Originally Posted by newyota View Post
    Yes.Look at the parts diagram.O ring down inside the brass bushing where rod goes thru.
    Hells Bells. I see it in diagram. Let me guess, a special tool is required to get that out? Is there a MacGyver method perhaps?

  6. #6

    Default Re: Lower Unit Blues

    Quote Originally Posted by jwales2112 View Post
    Hells Bells. I see it in diagram. Let me guess, a special tool is required to get that out? Is there a MacGyver method perhaps?
    Method I heard of ,,remove shift shaft and tap brass bushing with 1/4 x20 thread and use a piece of threaded rod and a steel plate and nut to act as puller.

  7. #7

    Default Re: Lower Unit Blues

    Quote Originally Posted by newyota View Post
    Method I heard of ,,remove shift shaft and tap brass bushing with 1/4 x20 thread and use a piece of threaded rod and a steel plate and nut to act as puller.
    Thanks that sounds like a good idea. So the shift rod just turns out like a bolt then? It must be threaded on the end I can't see?

  8. #8
    Join Date
    Sep 2010
    Posts
    19,068

    Default Re: Lower Unit Blues

    Yes that lower shift rod screws right out.-----A 5/16-NC tap works a lot better in the bushing.

  9. #9
    Join Date
    May 2008
    Location
    Kent, the garden of England, UK
    Posts
    1,490

    Default Re: Lower Unit Blues

    Quote Originally Posted by jwales2112 View Post
    I put a new water pump and replaced the 2 shaft seals under the new water pump, replaced the 2 prop hub seals also. Motor pees like mad now which is great. I checked the lower unit and tons of water in there. Drained it, refilled, replaced the o-rings on the lower unit screws, ran it last night in lake and still tons of water in the lower unit. When I was fishing the outer prop shaft seal out I gouged the inside of the inner hub a tad. Not the shaft, just the inner hub. Could this have screwed me?
    That sounds an awful lot of water getting in via the shift rod seal unless it it is completely knackered

    Did you put the other seals in correctly.?

    You don't tell us what engine , but they usually go in back to back, i.e. with the lips facing away from each other

    Did you replace other gaskets or O rings which you disturbed? Did you fit new seals on the drain and level screws?

  10. #10
    Join Date
    May 2008
    Location
    Kent, the garden of England, UK
    Posts
    1,490

    Default Re: Lower Unit Blues

    Duplicate deleted

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