9.9/15 Gearcase bearing removal

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  • February 20, 2016 at 3:32 am #3662
    johnyrude200
    Participant

      Finally pulling one of these apart (have a couple that won’t shift either to reverse, or to forward).

      I have the original puller tool specific to these, but so far I’ve stripped out a prop nut and just about bent the two screws trying to free up the bearing. I’m guessing these bearings just get stuck in the housing? Blow torch time?

      The 25/35hp gearcase bearings seem to come out much easier than these little 9.9/15’s. And I’m surprised you pull the prop shaft out to get the bearing moving. Or am I just doing things wrong here?

      February 20, 2016 at 4:58 am #32178
      Casey Lynn
      Participant

        US Member

        Sounds like you need to invest in some service manuals.

        February 20, 2016 at 5:47 am #32179
        johnyrude200
        Participant

          Well I’ll take a look in the morning and see what I missed. Guessing it’s something obvious. Devoting 80 hours a week to repairing these motors can make the senses dull to say the least.

          For what it’s worth bud, I don’t post on here unless it’s something I’ve spent some time deliberating over.

          February 20, 2016 at 7:32 am #32181
          david-bartlett
          Participant

            Some good reading here:

            http://www.leeroysramblings.com/Lower_unit.htm

            You will note that Leroy has a bit to say about salt water intrusion on this area.

            February 20, 2016 at 2:23 pm #32191
            johnyrude200
            Participant

              OK, I’m thinking I did things right, INDEPENDENT of a service manual, but have a badly stuck bearing housing due to salt water. Yippee.

              February 20, 2016 at 4:07 pm #32195
              Casey Lynn
              Participant

                US Member
                quote johnyrude200:

                For what it’s worth bud, I don’t post on here unless it’s something I’ve spent some time deliberating over.

                Your deliberation time can be greatly reduced and profitable time will take it’s place with manuals. As far as the bearing housing goes….it is time for the Oxy/Acetylene torch…..Bud.

                February 20, 2016 at 5:06 pm #32199
                johnyrude200
                Participant

                  I think I need to trust the manuals more. I read them, then go to perform the procedure, but the reality is in many cases the procedure doesn’t work because there is something wrong with the motor that I’m not familiar with…i.e. a stuck bearing housing.

                  Everyone gets a first time, right 🙂

                  Probably overthinking an obvious issue due to first time experience in these situations. But I agree, less time fussing, more time being productive = better living!!!!!!!

                  February 20, 2016 at 6:24 pm #32203
                  fleetwin
                  Participant

                    US Member

                    Joel
                    Trying to remember the tool(s) required pulling the 9.9/15 prop shaft bearing carrier/seal assembly. I’m thinking it was two little threaded things that somehow got threaded into the bearing carrier, am I correct? If so, this set up probably isn’t much of a match for salt water, so the big torch will be necessary. I know on the 6/8hp gearcases using a big ol pipe wrench wrapped around the bushing/seal carrier can be pretty effective twisting it sideways instead of just trying to pull it straight out. Unfortunately, I didn’t think there is enough "meat" on the 9.9/15 carriers for the pipe wrench to grip on. The other tool that would probably help is a little air hammer used inside the outer edge of the bearing carrier, this method can be pretty effective breaking up the salt bond. Please be careful though, don’t gouge up the gearcase housing.
                    Will be interested in hearing what the problems are inside causing these gearcases not to shift into either gear, pretty robust units as a rule.

                    February 20, 2016 at 9:27 pm #32211
                    johnyrude200
                    Participant

                      here’s the puller I had to use, the original two screws used to pull against bent pretty quickly due to how stuck the bearing was. So I ended up just taking some 1/4-20 thread bolts, and reinforcing them with 3 washers, and 13 x 1/4" hex nuts. Now I did have to use a pipe wrench to hold the puller in place as this bearing was so stuck, that if I cranked down hard using a cheater bar on the #8 hardened nut (on the prop shaft), the 2 lighter weight screws would start to bend.

                      It took some time, but it came out without heat. I knew it was going to work when the first try I had on it at least broke the bearing free from the gearcase housing (saw the salt seal crack in half).

                      The reason why the gearcase wasn’t shifting is because the pinion gear had a broken tooth, which had lodged it’s way behind the shift cradle, and stopped things from working.

                      I had a 2nd gearcase with the same issue (only shifted from neutral to reverse, no forward) that I went through today (no salt issues, came apart in about 2 mins). Same deal, broken tooth on the pinion gear lodged in behind the shifter cradle. Go figure, my 1st two of these gearcases I am pulling apart and both with the same issue.

                      February 20, 2016 at 11:33 pm #32216
                      chris-p
                      Participant

                        Boy, I see these salty motors, and Im glad I live where I do! I don’t envy you guys at all for the trouble the salt causes you.

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