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Thread: Prop shaft play
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04-08-2021, 04:12 PM #16000 RPM
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Prop shaft play
WHAT would be the max acceplable prop shaft play [in&out' for a stock 1.87 merc case? 1995 200 2.5. i have 2 other, having very little play, 1 in question noticeable. does merc give a spec for that? thanks. No lower unit gurus out there??
Last edited by KIRCHNER; 04-08-2021 at 09:02 PM.
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07-11-2021, 02:18 PM #25000 RPM
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I am having a similar issue. I have a manual at home I'm going to check next week.
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07-12-2021, 10:23 AM #3
I don't know what the book says but I do know you better have some and you can't have too much!
If it is between 0.0100 and 0.0625 you are ok. I've seen all different amounts of run-out from next to nothing (like 0.008) to damn near 0.125 (and even greater than 0.125 on some newer merc gearcases) and they all seem to run the same. I'm sure there is an ideal amount but if you are in that first range I listed I would not worry.
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07-12-2021, 12:07 PM #45000 RPM
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When I get home this week I'm going to put a dial indicator on it and find out where I'm at I feel like it changed on my last trip or i just really started paying attention to it more this last trip.
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07-17-2021, 10:38 AM #5Platinum Team Member
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