Rob,
The 2GMF timing is gear driven. There is no timing belt to change.

Sam
C&C 26  Liquorice 
Ghost Lake Alberta 


On Jul 31, 2020, at 9:07 AM, Robert Abbott via CnC-List <cnc-list@cnc-list.com> 
wrote:

 Jeffery, 

Thank you for the explanation.      I have a Yanmar 2GMF which I will assume 
then is a non-interference engine.  

Any idea when the timing belt should be changed.....e.g. number of engine hours 
or overall age of the belt?

Rob Abbott
AZURA
C&C 32 - #277
Halifax, N.S.



On 7/31/2020 11:57 AM, Jeffrey Brideau via CnC-List wrote:
> Some engines are deemed interference engines wherein the pistons occupy the 
> same space as an open valve. If the timing belt brakes, the pistons become 
> out of sync with the valve train and havoc ensues. With non-interference 
> engines, it’s just a major inconvenience. 
> 
> On Fri, Jul 31, 2020 at 10:34 AM Robert Abbott via CnC-List 
> <cnc-list@cnc-list.com> wrote:
>> Has anyone ever experienced an issue with a broken timing belt in our 
>> marine diesel engines?
>> 
>> A club member had his break recently and it destroyed his engine which 
>> he choose to replace rather than repair....and not sure if it actually 
>> could be replaced.   I'll get more info on the exact type of engine and 
>> the extent of the damage.  He said some marine diesel engine 'timing 
>> belts' can break but not cause the kind of damage his did.
>> 
>> Rob Abbott
>> AZURA
>> C&C 32 - #277
>> Halifax, N.S.
>> 
>> 
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