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  1. #1
    JRM
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    99 FICHT 225 HP water in lower unit oil

    Seems like every 50 hours or less I start getting water in the lwr unit oil. Each time I get it fixed they say it is the upper shaft seals are leaking. Seal part numbers 329922 and 329923 are changed along with the impeller. I'm wondering if something is causing these seals to fail and if that is true I need to fix the real problem not just the symptom. How long do these seals last normally? How many hours before I should change the lwr unit oil normally? and does anyone have any idea of what esle I should have the tech. check when I bring the boat in to have this fixed?

    Thanks for this great forum! Joe

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  3. Evinrude/Johnson Motors / SC Club Moderator ChampioNman's Avatar
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    #2

    Re: 99 FICHT 225 HP water in lower unit oil (JRM)

    Do they also replace the prop shaft seals and the o ring on the bearing carrier?

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    #3

    Re: 99 FICHT 225 HP water in lower unit oil (JRM)

    Joe, one thing you may want to look into, is the condition of the upper driveshaft. Make sure it's not bent. A bent shaft spinning at 6000 R.P.M. will open up the seal and allow pressured water from the water pump to pour in. Also, make sure some sealant is used around the outer perimeter of these seals, as this is also a place for water to leak in. Usually, these seals have a very long life when everything is correct.

  5. JRM
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    #4

    Re: 99 FICHT 225 HP water in lower unit oil (ChampioNman)

    No they do not replace any other parts. I assume that they pressure test the system and find the upper seals leaking and once the new seals are in place they test it again to ensure that they have fixed it. I will be much more involved in questioning them this time. This will be the third time the water is in the oil and if they say it is the upper seals again then something is wrong imo.

    I will aslo bring up your suggestion on checking is the upper drive shaft is straight. As I said it seems to me something is causing these seals to leak other than normal wear etc.


  6. Moderator SEAHORSE's Avatar
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    #5

    Re: 99 FICHT 225 HP water in lower unit oil (JRM)



    The upper driveshaft bearing should be replaced and the bearing area and seal areas of the driveshafts inspected.

    Water in the oil quickly wears the upper bearing and then the shafts get a wobble going in them. That is what is taking out your upper seals.
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  7. JRM
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    #6

    Re: 99 FICHT 225 HP water in lower unit oil (SEAHORSE)

    Is there a lot of additional labor to change the drive shaft bearing than for a impeller repair, which has been running about 3.5 hours? I'm hoping most of the labor is just getting to the drive shaft. Is it worth having them inspect the bearing first or is it something that just needs to be changed since salt water got to it. I'll bring it back to the Evinrude folks here in San Diego and I will share this info with the techs. Something is causing this repeating problem. One other thing, I once again found some fine metal shavings on the oil fill magnetized screw, but there has always been some there whenever I changed the oil past several years. Are metal shavings normal? How much before I should get concerned? One last thing what kind of lwr unit oil should I use ( does it have to be evinrude's) and how often do you think I should change it, on hours used or by date.

    Thanks again for all the help. Joe

    <br /><br />
    Modified by JRM at 8:33 PM 6/15/2010


    Modified by JRM at 8:41 PM 6/15/2010

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    #7

    Re: 99 FICHT 225 HP water in lower unit oil (JRM)

    The fine metal shavings are no big deal normally. It's the bigger chunks that indicate a serious problem. The driveshaft bearing carrier is no big deal to check out, as it is held in place by 4 bolts that are easy to get to after the water pump has been removed. It would be very unusual to have a problem with this part. You might want to also check your propshaft for being bent. It does'nt turn as fast as the driveshaft, but it is possible to create a leak.

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    #8

    Re: 99 FICHT 225 HP water in lower unit oil (gearcaseman)

    Is it also possible there could be a problem with the shift rod sealing?


    Bobby Hamrick
    Rocky Face GA
    01\' Ranger 519VX
    Rude 200 FICHT

  10. JRM
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    #9

    Re: 99 FICHT 225 HP water in lower unit oil (bobbyhamrickdalton)

    I'm thinking it is gonna be the same problem it has been but I will find out this week. I'm gonna bring it back to the service folks that have worked on it the last several years. I'll explain that this problem keeps accuring and if it is AGAIN the upper seals then something is making them leak and that something needs to be fixed as well as changing the seals and the impeller.

    How often does everyone change the impeller and the oil in the gear case, is there a rule of thumb like every other season or is it hours based?

  11. Evinrude/Johnson Motors / SC Club Moderator ChampioNman's Avatar
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    #10

    Re: 99 FICHT 225 HP water in lower unit oil (JRM)

    LU fluid usually every 100 hours. Impeller 3 years or 300 hours depending on operating conditions. Do you run in salt or brackish water? As GC man stated have they checked the prop shaft for straightness? And as Seahorse says the drive shaft bearing?

  12. JRM
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    #11

    Re: 99 FICHT 225 HP water in lower unit oil (ChampioNman)

    I'm taking it in next week. I will ask those questions after the tech looks it over. I do think since the leak was identified twice as bad upper seals most likely the same seals are what is bad again. That to me means whatever is causing those seals to fail i.e. upper dive shaft "wobble" is the probably cause of the seal failure.

    IF they say the leak is from some where else that is a different story/new problem. Each time I had water in the oil they identified the problem as bad upper drive shaft seals and repaired same. Since this is the 3rd time, IF it is the same seals then something more needs to be checked. Something is breaking those seals.

    All your suggestions will be going with me. I'll talk to the tech after he comes up with his own diagnosis, I will make sure he understand that if it is the upper drive shaft seals he needs to do more trouble shooting to find the real problem. I'll be sure to post what he finds.

    Thanks again for all the input! Joe

  13. Evinrude/Johnson Motors / SC Club Moderator ChampioNman's Avatar
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    #12

    Re: 99 FICHT 225 HP water in lower unit oil (JRM)

    One other thing that may have happened is the seals may have gotten reversed. Meaning that the lower seal is part number 329923 and the upper seal is 329922 they go back to back like the prop shaft seals. Have them inspect the lower drive shaft for wear.

  14. JRM
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    #13

    Re: 99 FICHT 225 HP water in lower unit oil (ChampioNman)

    Well the authorized evinrude service tech says he pressure tested the gear case and it didn't leak. Then he applied a vacuum and the upper seals leaked again then he pressurized the system again and he got the prop seals to leak a little bit. My impression from talking with him was he wasn't really confident on why it was getting water in the oil but that's my gut feeling. I'm hoping Im wrong. He says he inspected the upper drive shaft and it's bearing and he says they look good and see no reason to replace them. I explained that this problem keeps happening and he said he understood and was looking everything over but can not see any problem except for the seals.

    So...he is changing all the bad seals with a new impellar kit and putting it back together. If it leaks again I think I'm just gonna live with it. Ill check the gear case oil more often and change it at 50 hours/vs 100 if it gets milky again. I don't have a lot of confidence in these repairs. At this point I don't really have any other options. The certified tech has looked at it and I have to trust he knows what he is doing. Pushing the issue and having them replace more parts or go into the gear case insearch of the leak cause scares me more than just running it with some water in the oil. My fear is they take that gear case apart and something gets installed wrong and I hand grenade the gear case after some hour amount that puts it out of repair warranty.

    Simply put I now think the cure for this leak is worse than the disease. It's time to go fishing!

    Thanks again for all your support. Joe

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    #14

    Re: 99 FICHT 225 HP water in lower unit oil (JRM)

    For about $75 for a new upper bearing housing including the 2 seals already installed would save you a bit of labor since the seals do not have to be removed and new ones pressed in using the special installer tool. Ask to be sure the the oring for the bearing housing is the improved brown one and not the old style black one.

    Now he finds the prop shaft seals leaking also...

    The upper bearing can look fine but there is no way to see how worn the individual needle bearings are.
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  16. JRM
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    #15

    Re: 99 FICHT 225 HP water in lower unit oil (SEAHORSE)

    I hear ya.

    I'll ask monday about that option but I'm guessing it will be all back together already. I'll also ask about the o-ring. There is a chance that they did not have all the prop seals and had to order them. I did ask him specifically about the drive shaft bearing hoping to prod him to really look it over when I brought the boat in. Unfortunately he did not find anything wrong with it.

    I believe what you are saying and if they haven't put it back together or when it leaks again and it's time for a new impeller I will just tell the tech that I want to change that part, just as a preventative measure due to it getting water on so many times. It seems obvious to me something is wrong but again, I'm not the tech and it can be awkward to trying to explain they are wrong/don't know their job and should listen to me the "boat owner" who looked it up on the Internet...

    Anyway..the motor is now over 10 years old and the prop seals have never been replaced so it's probably not a bad idea to change them. The motor has about 700 hrs total time and still runs well overall I've been very happy with it.

    Thanks again for this great forum! Joe

  17. Moderator SEAHORSE's Avatar
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    #16

    Re: 99 FICHT 225 HP water in lower unit oil (JRM)

    the tech or dealer shouldn't complain as that is more $$$ in their register when you add parts.
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