Thrust Washer Stuck On Prop

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  • Thrust Washer Stuck On Prop

    After replacing my original aluminum prop with a Quicksiver SS about 6 years ago, I wanted to use the old aluminum one again but it won't slide back on the prop shaft. I think the thrust washer that is on the prop must have shifted somehow and it is frozen in place. Any suggestions on how to get that sucker free? Motor is a 2014 F40LA Yammie. And yes,, I did post about this several months ago. Thanks for any help.

  • #2
    Is the washer stuck on the hub of the prop or gear case? Have you used penetrating oil and a mallet? Are the metals dissimilar? I always use a bronze thrust washer. If you get it off then make sure to use some grease before re-installing it and check it annually. If you have not removed your prop for so many years you are lucky you haven’t wrapped fishing line or debris in there and shredded the shaft seal.
    2010 Sea Ray 205 Boston Whaler dauntless 15 W/75 merc 14' Shakespeare Wondercraft W/Merc110 17' Gheenoe W/Johnson 4.5 Other assorted watercraft

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    • #3
      Can you post pics?

      In advance of pics - spray numerous times with a PB blaster or similar penetrating oil.....
      Do you have a small torch? Chizzels and hammer?

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      • #4
        Need the Lance-O-Matic 5000…😀

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        • #5
          The washer is stuck on the prop.

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        • #6
          Originally posted by slowman View Post
          The washer is stuck on the prop.
          lay prop on a flat surface, thrust hub down
          a large long flat blade screwdriver reaches down from the top and onto the top face oh hub
          hammer on screwdriver until it pops off.

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          • #7
            Soak soak soak....then heat...pry...3 piece pully puller...hard to see from the pic showing..

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            • #8
              OK guys,,I got it off. I bought a cheap torch for my propane bottles and after using that and still would not budge, I put some more WD40 on it and after it cooled down a few minutes I pulled it off with some channel lock pliers. Thanks to all.

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              • Boat Bum
                Boat Bum
                Senior Swabby
                Boat Bum commented
                Editing a comment
                It's nice when people follow up with their resolution after coming here for help; good job!

            • #9
              Sorry I was late to this one, but glad you got if off and followed up !!

              Ken Reeves
              [email protected]
              941-735-5808

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              • #10
                Yup ... a 'heat hammer' sure works wonders. Oh, and the BEST penetrant oil EVAH is:

                FWIW the best penetrating oil one can use is a DIY homemade mix of 50% acetone and 50% automatic transmission fluid (ATF).

                Recently “Machinist Workshop Magazine” did a test on penetrating oils. Using nuts and bolts that they ‘scientifically rusted’ to a uniform degree by soaking in salt water, they then tested the break-out torque required to loosen the nuts. They treated the nuts with a variety of penetrants and measured the torque required to loosen them.

                This is what they came up with:
                • Nothing: 516 lbs
                • WD-40: 238 lbs
                • PB Blaster: 214 lbs
                • Liquid Wrench: 127 lbs
                • Kano Krmoil: 106 lbs
                • ATF/Acetone mix (50/50 mix): 50 lbs
                Last edited by DaleH; 12-01-2021, 06:04 PM.
                Life is too short for an ugly boat!

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                • blaster
                  blaster commented
                  Editing a comment
                  Thank you for this. I’m going to mix up a bottle and try it on a 20 year old truck.

              • #11
                Thats great info on the penetrating oils. Thanks. And,,, after putting my old aluminum prop back on, the engine did troll along quieter and I caught a nice mess of black crappie and released several bass as well. Mission accomplished! Also while I was out yesterday I went full throttle with the alum prop and was surprised to go almost as fast (31.4mph) as with my Quicksiver SS 10.5 X 13 (32.5mph) But then I noticed I was 400rpm over max reccomended 6000 and remember the reason why I went from the 12' pitch alum to the 13" SS six years ago. Thanks again guys.

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