[C320-list] Motor Mounts - Yanmar 3GM30

[Patricia Claytor]

Thank you. 

Patricia

-----Original Message-----
From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf
Of Graeme Clark
Sent: Wednesday, August 16, 2017 12:30 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Motor Mounts - Yanmar 3GM30

I had a small fuel weep that dropped unseen onto the aft starboard mount and
the rubber eventually disbonded from the metal

I replaced them with R&D mounts which are about one third the price and are
constructed differently so the disbonding can't happen. They also cannot
allow engine to drop in case if a knockdown 

I replaced one at a time without removing the engine. To do this you need to
remove the mount mounting lugs from the engine block. The engine is easily
supported by remaining three mounts temporarily

Once they were all in place I did the shaft realignment process

Hope this helps

Graeme

Sent from mobile: please excuse typos etc.!


> On 16 Aug 2017, at 16:21, <pclaytor at tampabay.rr.com>
<pclaytor at tampabay.rr.com> wrote:
> 
> Mine was based on a visual inspection by my mechanic.  
> Patricia
> Knot Home
> 
> 
> 
> ---- Angus Henderson <rathlyn1 at gmail.com> wrote: 
>> Given the discussion on replacing motor mounts I was wondering whether
the decision to replace was based on visual inspection and observed
degradation or whether there were some operational issues?
>> Replacement after how many engine hours or years of operation. 
>> Angus
>> Hull# 999
>> Georgian Bay
>> 
>> Sent from my iPhone
>> 
>>> On Aug 16, 2017, at 10:19 AM, <pclaytor at tampabay.rr.com>
<pclaytor at tampabay.rr.com> wrote:
>>> 
>>> Thank you!  
>>> 
>>> Patricia
>>> 
>>> ---- Chris Burti <clburti at gmail.com> wrote: 
>>>> Patricia,
>>>> Absolutely replace all of them as age is an issue and the cost should
not be that much more. Shaft and coupling alignment is critical anytime, but
especially after engine mount replacement. We published an article on that
subject in Mainsheet a couple of years ago explaining the process and it
should be on the website. 
>>>> 
>>>> Best Regards,
>>>> Chris
>>>> 
>>>> 
>>>>> On Aug 16, 2017, at 9:32 AM, Timothy Woods <woodstimothya at gmail.com>
wrote:
>>>>> 
>>>>> Good morning group,
>>>>> 
>>>>> Out of curiosity did your marina tech explain what may of happened 
>>>>> to to damage the mounts?
>>>>> 
>>>>> I would like to avoid damaging mine if possible.
>>>>> 
>>>>> Thanks in advance, Tim
>>>>> 
>>>>>> On Aug 16, 2017 7:44 AM, <pclaytor at tampabay.rr.com> wrote:
>>>>>> 
>>>>>> Thank you!  The quote was $1,000-$1,200 to replace 2 motor 
>>>>>> mounts.  I know this is not something I can do or would want to 
>>>>>> try, so I would definitely hire a boat yard to do the work.  I am 
>>>>>> scheduled for a haul-out and thought to have them do the work 
>>>>>> while out of the water. Replacing all 4 might be advisable.
>>>>>> 
>>>>>> Take care,
>>>>>> 
>>>>>> Patricia
>>>>>> Knot Home
>>>>>> 
>>>>>> 
>>>>>> ---- david.allred at verizon.net wrote:
>>>>>>> I replaced all four of my motor mounts on my 2000 C320 two years 
>>>>>>> ago.  I
>>>>>> bought the original equipment mounts from Yanmar (two years 
>>>>>> before I actually replaced them) and I think the cost was around 
>>>>>> $400.  I did the work myself, and not being particularly handy, I 
>>>>>> probably spent 20 hours or maybe more for the whole project.  I'm 
>>>>>> guessing someone who knows what they are doing could do it in 
>>>>>> less than half that time, maybe much less time.  I found that 
>>>>>> carefully outlining the original mounts on the stringers with a 
>>>>>> Sharpie and counting the exact number of threads before loosening the
bolts that attach the motor to the mounts made realigning the shaft much
easier.
>>>>>> I raised the motor from the motor mounts with the screw jack from 
>>>>>> my Honda (twice-one on each side) with a 1x6 piece of wood on top 
>>>>>> to distribute the weight across the bottom of the motor.  It 
>>>>>> worked for me, but I'd likely pay someone to do it in the future.  
>>>>>> If your estimate was under $1,000, I would definitely pay someone to
do it.
>>>>>>> DLA
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> -----Original Message-----
>>>>>>> From: pclaytor <pclaytor at tampabay.rr.com>
>>>>>>> To: C320-List <C320-List at Catalina320.com>
>>>>>>> Sent: Tue, Aug 15, 2017 2:08 pm
>>>>>>> Subject: [C320-list] Motor Mounts - Yanmar 3GM30
>>>>>>> 
>>>>>>> Hey everyone:
>>>>>>> 
>>>>>>> I need to replace my motor mounts on my Catalina 320, year - 
>>>>>>> 2000.  I
>>>>>> received 1 estimate but it seemed high to me.  Was wondering what 
>>>>>> I might expect in costs?  Ideas?
>>>>>>> 
>>>>>>> Patricia
>>>>>>> Knot Home
>>>>>>> 
>>>>>>> 
>>>>>> 
>>>>>> 
>>> 
>