1970 Evinrude 6 hp oil seal trouble

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  • May 26, 2022 at 11:17 am #260502
    ml_mcm
    Participant

      My brother-in-law is trying to replace oil seals on his 1970 Evinrude and the old one slides right on and off but the new one seems to need some aggressive help.  Is this expected?

      Thanks

      May 26, 2022 at 11:25 am #260503
      crosbyman
      Participant

        Canada Member

        which oil seal  … prop shaft   drive shaft   ….isn’t  it normal  new seal should be tighter  than old strechted seals ?    do you have the proper part #s

        Joining AOMCI has priviledges 🙂

        May 26, 2022 at 11:42 am #260504
        ml_mcm
        Participant
          crosbyman wrote:

          which oil seal  … prop shaft   drive shaft   ….isn’t  it normal  new seal should be tighter  than old strechted seals ?    do you have the proper part #s

          forgot to include….prop shaft.  Definitely expected tighter but he was surprised at just how tight.  Is so tight he needs to use a PVC pipe or similar to put over the shaft and bang it into place?

          May 26, 2022 at 12:44 pm #260507
          crosbyman
          Participant

            Canada Member

            whatever works  if properly aligned and part# is as required    touch of lubricant may help

            Joining AOMCI has priviledges 🙂

            May 26, 2022 at 12:47 pm #260508
            wedgie
            Participant

              Invest in a cheap set of digital calipers and measure the seal inside diameter and compare with the crank. Then measure  outside diameter  of seal and inside of  where it sits in the case. Then measure the depth (thickness). 🙂

              • This reply was modified 3 years, 7 months ago by wedgie.
              • This reply was modified 3 years, 7 months ago by wedgie.
              May 26, 2022 at 1:01 pm #260511
              ml_mcm
              Participant

                Thanks everyone.

                May 26, 2022 at 3:01 pm #260514
                fleetwin
                Participant

                  US Member

                  OK, well that seal should not have just “slipped out of there”, trying to remove these things is usually a big battle.  Do you have the gearcase apart, or did you remove the seal with the gearcase assembled?  The correct OEM part number for the prop shaft seal is:  313282 and it should take some effort to drive it in place.  Be very careful, those prop shaft bushing/carriers are very delicate and break easily.

                  That being said, the design of these seals/bushing has changed over the years, so be sure you actually have a 1970 6hp.  Does it look like the original gearcase?  Perhaps someone had it apart before and has mixed/matched parts in there.

                  May 26, 2022 at 4:26 pm #260516
                  ml_mcm
                  Participant
                    fleetwin wrote:

                    OK, well that seal should not have just “slipped out of there”, trying to remove these things is usually a big battle.  Do you have the gearcase apart, or did you remove the seal with the gearcase assembled?  The correct OEM part number for the prop shaft seal is:  313282 and it should take some effort to drive it in place.  Be very careful, those prop shaft bushing/carriers are very delicate and break easily.

                    That being said, the design of these seals/bushing has changed over the years, so be sure you actually have a 1970 6hp.  Does it look like the original gearcase?  Perhaps someone had it apart before and has mixed/matched parts in there.

                    A piece of PVC pipe and some persuasion and I understand he was able to get it installed perfectly

                    Thanks for the help everyone

                    Much appreciated by a couple rookies at this

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