[C320-list] Engine / shaft alignment

[Scott Thompson]

So is the idea that I rotate the mounts themselves a bit?  I imagine I 
have to loosen the top nuts on each mount so that the mounts can rotate 
underneath.

Jeff Church wrote:
> Scott,
> 
> Take a closer look at the lower portion of the motor mount where it 
> bolts into the engine bunk. The aft holes on the aft mounts and the 
> forward holes on the forward mounts are elongated so that the engine can 
> be angled or shifted laterally.
> 
> JeffC
> 
> 
> ----- Original Message ----- From: "Scott Thompson" <sthompson at toad.net>
> To: "C320-List" <C320-List at catalina320.com>
> Sent: Saturday, May 20, 2006 8:36 PM
> Subject: [C320-list] Engine / shaft alignment
> 
> 
>> Surprise now has a Gori 2 blade folding prop to replace the 3 blade 
>> fixed. So far I'm satisfied, except that there is definitely quite a 
>> bit more vibration under power than before.  Today I tried to tackle 
>> this by doing a shaft alignment.  This is a job I've ignored since 
>> owning the boat and have been rather nervous about that situation.  
>> When I unbolted the flanges I found that the engine flange did not 
>> line up well with the shaft, and was a bit higher.  I was able to get 
>> the alignment much better in the fore-aft plane using the adjustment 
>> advice in my owners manual, but was left with somewhat excessive side 
>> to side misalignment.  To be precise, the two flanges have good axial 
>> alignment and are even top to bottom, but there is a bit of a gap 
>> (about .014 inches by my feeler gauge on the starboard side.  I can't 
>> figure out how to tune this out.  It would seem to require moving the 
>> front of the engine slightly to starboard, but I don't see any way to 
>> adjust the engine mounts laterally.  How is this supposed to be done?  
>> I have the Yanmar 3GM30F, 1999 model.
>>
>> Scott Thompson
>> Surprise, 653
>>
>>
>