Maintenance - engine shaft coupling removal

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engine shaft coupling removal

Printed From: Laser 28 International Class Association
Category: Laser 28 General
Forum Name: Maintenance
Forum Description: All the things to care for your boat
URL: http://www.laser28.org/forum/forum_posts.asp?TID=781
Printed Date: 04 May 2024 at 6:16pm
Software Version: Web Wiz Forums 11.03 - http://www.webwizforums.com

Topic: engine shaft coupling removal

Posted By: khardy
Subject: engine shaft coupling removal
Date Posted: 14 January 2018 at 10:21am

anybody know how to remove the engine to sail-drive coupling off the engine's drive shaft? I got the nut off but I'm not sure how to remove the coupling. My gear puller won't fit between the bottom engine crankcase cover and the coupling.

Replies:

Posted By: frfletch
Date Posted: 16 January 2018 at 2:50pm

By memory I believe the coupling of the saildrive to the engine is a flanged tooth affair with a rubber fitting between to soften the action and reduce vibration. Is that correct? So the collar you refer to is the one attached to the bottom of the crankshaft that fits its matching part on the top of the shaft of the sail drive with the rubber fitting in between? Am I in the right place? If correct, I think this had a locking square section keyway between the collar and the shaft. I don't remember this being difficult to remove, but if the teeth of my puller did not fit into it, I would have ground down those teeth until they did. More challenging was getting the bottom crankcase plate off. I glued two pieces of 3/4 ply together and drilled holes in it to match the bolt holes that hold the sail drive onto the engine. Then I made some long threaded studs to hold that down from the top, then a double nutted affair through the middle allowing me to screw down against the center of the draft shaft which applied uplift to the plate. Something like that...can't quite remember, but I bet Bill can as he has done it dozens of times, where I only did it twice.