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09-21-2014, 09:37 AM
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#1
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Member
City: Brielle
Vessel Name: Fawkes
Vessel Model: 2006 pilot 30
Join Date: Sep 2014
Posts: 13
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Mainship 30 engine hatch hits engine
Hi all,
I have recently purchased a 2006 pilot 30' with the 315 yanmar.
Wondering if any one else has or had this issue. When or more people stand on engine hatch it contacts the engine on the port side and then transfers engine vibration into the hatch with an annoying noise. It hits on the very edge rail of the hatch. Any advise welcome.
Thanks,
Jim
Brielle, nj
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09-21-2014, 12:36 PM
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#2
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Guru
City: League City, TX
Vessel Name: Pelago
Vessel Model: Wellcraft 3300 Coastal
Join Date: Aug 2011
Posts: 1,057
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I had exactly the same issue, but with a 4JH3E Yanmar. After looking at the indentations in the insulation, I found the front engine lifting ring was the offending item, so I simply removed it and that allowed enough clearance. I also replaced the rubber seal around the hatch which raised it an 1/8" or so. Good luck.
Larry
M/V Boomarang
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09-21-2014, 12:44 PM
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#3
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Guru
City: gulf coast
Join Date: Jun 2014
Posts: 3,440
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Check engine mounts and shaft alignment.
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09-21-2014, 12:48 PM
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#4
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Guru
City: Concrete Washington State
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 18,603
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As the previous post implies something is probably wrong. It's not likely they designed it wrong.
__________________
Eric
North Western Washington State USA
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09-21-2014, 01:00 PM
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#5
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Technical Guru
City: Wilmington, NC
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 6,194
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Not uncommon. Lots of boats have little grinder scars or cut structure where things are "clearanced". Really just fixing mfr's goofs.
If shaft run has only one cutless bearing and floating gland, engine can be lowered and aligned in that position. With two cutless bearings or a hard mounted gland, kinda SOL, and time to get the grinder.
Or a stiff leg can be put between stringer and deck and jack it up a touch.
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09-21-2014, 01:09 PM
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#6
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Guru
City: League City, TX
Vessel Name: Pelago
Vessel Model: Wellcraft 3300 Coastal
Join Date: Aug 2011
Posts: 1,057
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Quote:
Originally Posted by manyboats
As the previous post implies something is probably wrong. It's not likely they designed it wrong.
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In my case, the boat had been repowered and the Yanmar was taller than the original Perkins. I had decided to change the engine mounts due to age, and discovered the rear mounts were completely bottomed out and had been adjusted all the way down. When I disconnected the shaft coupler, the shaft dropped almost an inch, which meant it had been horribly out of alignment for a long time. In order to properly align the shaft, I modified the engine beds and mounts to lower the rear of the engine. This, in turn, raised the front of the engine somewhat. The lifting ring now contacted the hatch when the engine shuddered to a stop or when shifting in or out of gear. Removing the lifting ring and adding a thicker gasket solved my problem, and the shaft is now properly aligned.
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09-21-2014, 01:36 PM
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#7
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Member
City: Brielle
Vessel Name: Fawkes
Vessel Model: 2006 pilot 30
Join Date: Sep 2014
Posts: 13
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I'm thinking it's not an engine alignment or mount issue. Hours are low 215.
The hatch is long, probably 5'. It only rests at the hinge and two pads at the end of the hatch. Thinking It is sagging a bit in the middle. Stringer of the hatch contacts the aft end of the valve cover. Perhaps shimming the rubber pads at the stern where the hatch rests when closed.
Thanks for replies
Jim
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09-24-2014, 10:27 AM
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#8
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Member
City: Brielle
Vessel Name: Fawkes
Vessel Model: 2006 pilot 30
Join Date: Sep 2014
Posts: 13
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To all,
A quick update should any other pilot 30 owners encounter.
Upon closer inspection the engine mounts have a vertical adjustment. Threaded shaft with two lock nuts to the arm that attaches to the engine. So minding the shaft adjustment I can lower the entire engine.
Looking at the maint specs this alignment is something recommended to be checked annually.
jim
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09-24-2014, 10:43 AM
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#9
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Guru
City: Miami Florida
Vessel Name: Possum
Vessel Model: Ellis 28
Join Date: Aug 2011
Posts: 5,154
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"So minding the shaft adjustment I can lower the entire engine. "
Assuming your engine and shaft are in alignment now, you can't move the engine.
" It's not likely they designed it wrong. "
Oh Eric, That's sweet, but this isn't a Willy we're talking about. You're so innocent.
__________________
Parks Masterson
Retired from Hopkins-Carter Marine Supply
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09-24-2014, 11:12 AM
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#10
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Technical Guru
City: Wilmington, NC
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 6,194
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Depending on how the shaft exits the boat, often you can lower the whole engine and still line it up correctly. Most shaft logs can handle lowering or raising the engine to some degree. The slight angle down at the strut will not cause issues.
Depends on how the shaft line is set up.
First step is check where alignment is now.
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