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Old September 13th 03, 08:37 PM
OMOO
 
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Default Hurth transmission problems on Perkins M-30 diesels

A friend put in a new Perkins M-30 with Hurth trans 2 years ago (34 ft
sail) and has gone thru 4 Hurth transmissions in 700 engine hours.

The M-30 engine is marinized and sold by Volvo as the 2030 with the
same Hurth trans private labelled as Volvo's own.

The engine is a high speed, high compression (23 to 1) 3 cyl that is
subject to high torsional dynamics at lower RPMs and this creates big
problems - wears our the splines on the drive plate and then chews up
the clutches in the trans. One trans lasted only 50 hours from new.

Perkins used a spring drive plate when sold as the M-30 - Volvo
switched to a 2 part rubber drive plate and apparently increaded the
weight of the flywheel to reduce the torsional destruction - wonder
how they knew and Perkins didn't?

Anyway - the question - who knows about 2 or 3 cyl diesels with
lightweight flywheels that tear up the trans with torsional dynamic
activity?


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Old September 14th 03, 01:23 PM
Dennis Gibbons
 
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Default Hurth transmission problems on Perkins M-30 diesels

Is this referring to s/v erinmore? th4 Nic 32?

--
Dennis Gibbons
S/V Dark Lady
CN35-207
email: dennis dash gibbons at worldnet dot att dot net
"OMOO" wrote in message
...
A friend put in a new Perkins M-30 with Hurth trans 2 years ago (34 ft
sail) and has gone thru 4 Hurth transmissions in 700 engine hours.

The M-30 engine is marinized and sold by Volvo as the 2030 with the
same Hurth trans private labelled as Volvo's own.

The engine is a high speed, high compression (23 to 1) 3 cyl that is
subject to high torsional dynamics at lower RPMs and this creates big
problems - wears our the splines on the drive plate and then chews up
the clutches in the trans. One trans lasted only 50 hours from new.

Perkins used a spring drive plate when sold as the M-30 - Volvo
switched to a 2 part rubber drive plate and apparently increaded the
weight of the flywheel to reduce the torsional destruction - wonder
how they knew and Perkins didn't?

Anyway - the question - who knows about 2 or 3 cyl diesels with
lightweight flywheels that tear up the trans with torsional dynamic
activity?



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Old September 15th 03, 02:25 AM
OMOO
 
Posts: n/a
Default Hurth transmission problems on Perkins M-30 diesels

no it's a catalina 34 called sea dancer

On Sun, 14 Sep 2003 12:23:14 GMT, "Dennis Gibbons"
wrote:

Is this referring to s/v erinmore? th4 Nic 32?



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Old September 15th 03, 01:01 PM
Dennis Gibbons
 
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Default Hurth transmission problems on Perkins M-30 diesels

The reason I asked is that a member of our Nicholson's group is having the
very same problem. If you would repeat your symptoms here on the list, we
may have some ideas

--
Dennis Gibbons
S/V Dark Lady
CN35-207
email: dennis dash gibbons at worldnet dot att dot net
"OMOO" wrote in message
...
no it's a catalina 34 called sea dancer

On Sun, 14 Sep 2003 12:23:14 GMT, "Dennis Gibbons"
wrote:

Is this referring to s/v erinmore? th4 Nic 32?







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