It is relatively simple to loosen the coupler bolts and check the spacing all around with feeler gauges. Next turn shaft 90 degrees at a time and repeat, this shows any crooked shaft or coupler. When done, if possible, check for up and down motion while turning and using a dial indicator. Adjusting the motor mounts very small amounts gives you a lot of .001s, turn nuts 1/6 of a turn at a time, or slide engine slightly sideways. Also, check to see if the shaft is centered in the exit hole. If it is off, adjust in the needed direction to take up what is needed from the feeler gauges by choosing to adjust the front or back mounts. Hopefully the nuts will not be frozen, you may need long socket extensions and/or a short wrench for the adjusting nuts. The nuts are usually US size, most popular is 15/16". I bought a 15/16" wrench from a cheap store and cut it in half. Lee Haefele ----- Original Message ----- From: [EMAIL PROTECTED] To: [email protected] Sent: Monday, December 10, 2007 6:37 PM Subject: [Liveaboard] Fwd: engine mount adjustment
-----Original Message----- From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Mon, 10 Dec 2007 5:42 pm Subject: engine mount adjustment I've got some whine running under power and the more throttle the louder the whine. It's getting annoying. Doesn't happen in reverse or neutral. I've talked to the transmission/power people (Mack Boring) and they said either the transmission or the cutlass bearing. Suggested taking the coupling apart and re-alignment. The "dripless" shaft seal folks said that the seal could whine if out of water, it's not. So, to align the shaft, how does one take into consideration the shaft load from the prop? There's not much movement, but there's gonna be some. Is a static alignment close enough? I understand it's +/- .003 ? It appears to be coming from the cutlass bearing, I likely can't tell until I pull the coupling apart. Any ideas, suggestions, wisdom, etc. The cutlass bearing has been in the boat about 4 years and has less than 100 hours on it under power. I do have a hefty three blade prop pushing the boat. It's a 40' Hunter. Thanks in advance ------------------------------------------------------------------------------ More new features than ever. Check out the new AOL Mail! ------------------------------------------------------------------------------ _______________________________________________ Liveaboard mailing list [email protected] To adjust your membership settings over the web http://www.liveaboardnow.org/mailman/listinfo/liveaboard To subscribe send an email to [EMAIL PROTECTED] To unsubscribe send an email to [EMAIL PROTECTED] The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/[email protected] The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html ------------------------------------------------------------------------------ No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.16.17/1179 - Release Date: 12/9/2007 11:06 AM
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