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  1. #1

    Default Proper seating depth of pinion bearing on 1980 30 hp evinrude

    I am working on this 1980 30 HP gearcase , I have totally disassembled the gear case and found the pinion gear with broken teeth and the forward gear with one chipped tooth. I have purchased new pinion and forward gear along with new bearings and seal kit. How do I ensure correct engagement.of pinion gear and forward gear?

  2. #2
    Join Date
    Sep 2010
    Posts
    20,282

    Default Re: Proper seating depth of pinion bearing on 1980 30 hp evinrude

    Check locating surface of pinion thrust bearing set-up.----If damaged you will need to replace gearcase.---No shimming needed with these very precise parts.

  3. #3
    Join Date
    Jun 2013
    Location
    Duluth Mn
    Posts
    3,193

    Default Re: Proper seating depth of pinion bearing on 1980 30 hp evinrude

    Pinion thrust bearing will present correct pinion depth with correct washer. Mic washer to be sure it's uniform. If case is damaged from washer action, then you may need to replace case. That wear will be obvious to the ***** eye. Working on a 1981 25 horse right now. I have welded cases and machined back down over the years, but you need another good case for measurements.....they have to be exact or the gears will fail. Backlash can be easily measured with these split housings to make sure your good to go.

  4. #4
    Join Date
    Nov 2011
    Location
    tennessee
    Posts
    4,659

    Default Re: Proper seating depth of pinion bearing on 1980 30 hp evinrude

    That should be a one piece housing an as Racer posted if case thrust surface damed junk it. Biggest pain is reassembling prop shaft balls
    Pappys Sales and Service
    Owner and Factory Certified Technician
    Former racer KDBA (Kentucky Drag Boat Association)

  5. #5
    Join Date
    Jun 2013
    Location
    Duluth Mn
    Posts
    3,193

    Default Re: Proper seating depth of pinion bearing on 1980 30 hp evinrude

    Did they even make a 30 in 1980? Guess I stayed up too late last night.

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