Date   

R: [Amel Yacht Owners] Re: trasmission oil cooler

Giovanni TESTA
 

Many thanks, Alan !
Buon Vento
Gianni
sv EUTIKIA
SM 428
https://www.youtube.com/user/eutikia1

----Messaggio originale----
Da: amelyachtowners@...
Data: 24-lug-2018 22.00
A:
Ogg: [Amel Yacht Owners] Re: trasmission oil cooler



----Messaggio originale----
Da: amelyachtowners@...
Data: 24-lug-2018 22.00
A:
Ogg: [Amel Yacht Owners] Re: trasmission oil cooler

 

bowman dc60-xcc

Cheers
Alan
Elyse SM437




Re: ZF25 Transmission Dipstick / Fluid Level

cpp_berkeley <no_reply@...>
 

Dean,

Hull #69, 2007 A54 has the correct dipstick. I distinctly recall adding 2L per the manual and noticing that it was low, so I added more. No tranny troubles, but I do have that rattle in the throttle you mention.

Do you know if it's possible to replace the filter cover with the updated design? Or does the updated design more about changes to the transmission casing where the filter cover sits?

-Scott


Re: Stove won't stay lit

Jose Venegas
 

Ryan,
 I had the same issue with the oven and I bought the part (it is a mercury filled and not a thermocouple) which I replaced and it worked fine... for a while.  Unfortunately, I waited too long between buying the part and installing it, and I am afraid it became damaged or I damaged it during installation because it stopped working after a few uses.  I bought the part in Martinique at a local chandlery and I don't remember its name.
If you find a supplier, I would be happy to chip in to buy one part like yours and one extra for the oven.  The replacement for the oven was complicated as it required almost full disassembly but for the burners, I think it can be easily done in place.  Feel free to come by Ipanema next Thurs evening or, if we have gone to Gloucester, on Sunday evening.  Even better, it would be great if you join us in Gloucester.  


Re: [Amel Yacht Owners] Re: ZF25 Transmission Failure

Rudolf Waldispuehl
 

Hi everyone

I’d like to carry transmission cooler replacement as a spare. 
I think the rubber parts, etc. are a potential source of leaking over time and not easy to repair.  Does anyone know where I can buy a set of the right spare parts for the transmission oil cooler?
I understood it’s a Bowman product, but can’t find any reference to order. 

Thanks for any advice.
Ruedi  
WASABI, A-54. #55
 
Von: <amelyachtowners@...> on behalf of "trifin@... [amelyachtowners]" <amelyachtowners@...>
Antworten an: <amelyachtowners@...>
Datum: Dienstag, 24. Juli 2018 um 14:03
An: <amelyachtowners@...>
Betreff: [Amel Yacht Owners] Re: ZF25 Transmission Failure

 

Hi Duane,

Thanks for that info.  I am planning to address the cooler replacement, at least to carry a spare.

I cannot yet say for certain that the cooler is operating at maximum efficiency, however I am sure we don't have a leak of fluid or any seawater ingress. When we reached shore after the event, I drained 2.05 litres of fluid from the transmission. It looked perfect. I have now changed the fluid about 4 times, and have not noticead any signs of seawater.
   
I'm fairly confident the biggest source of heat in the event was the brake disk (which is now beautifully polished !) which transferred to the transmission, metal to metal. Immediately after the event, the Volvo temp sensor was showing 80deg which is fairly normal for running at 2000.

Cheers
Dean



Re: [Amel Yacht Owners] Stove won't stay lit

Ryan Meador
 

Hi John,

From some off-list conversations and additional digging on Nikimat's website, I now believe my stove is an Eno.  Would you be able to share a photo of your Electrolux for comparison?

Thanks,
Ryan and Kelly
SM 233 Iteration
Boston, MA, USA


On Tue, Jul 24, 2018 at 6:35 PM John Clark john.biohead@... [amelyachtowners] <amelyachtowners@...> wrote:
 

Ryan, that looks like our oven which is an Electrolux.  If you replace it I might be interested  in the door.  Our glass was broken recently and I am trying to avoid buying a new one..  ;)

Regards, John

SV Annie SM 37
Le Marin

On Tue, Jul 24, 2018, 12:33 PM Ryan Meador ryan.d.meador@... [amelyachtowners] <amelyachtowners@...> wrote:
 
[Attachment(s) from Ryan Meador included below]

Hi all,

The right (larger) burner on my stove has been getting more and more
difficult to keep lit, and the last few days it has been impossible.  I
think there is something wrong with the flame-out detection.  It lights
fine, but within a few seconds of me letting go of the knob it goes out, no
matter how long I hold it to pre-heat.  The left burner and the oven work
fine.  I can't find any identifying info on the stove that would allow me
to search for further info, like instructions on adjusting it or
replacement parts.  Can any of you identify it from the attached photos?
Do you have a recommendation on how to fix this problem?

Thanks,
Ryan and Kelly
SM 233 Iteration
Boston, MA, USA


Re: [Amel Yacht Owners] ZF25 Transmission Dipstick / Fluid Level

Rudolf Waldispuehl
 

Hi Dean 

This is sad to hear what happened to your transmission. Sorry for all your troubles but thank you for your critical information.

On WASABI we have dipstick part number 3311 301 003, which should be the correct dipstick according your information. A54 #55 /2007, never replaced the stick to my knowledge.

Initially there was no oil pressure, as far as I understood, thats why the shaft break was activated. 
Im not an engine specialist but my question is: why was the oil pressure down? Maybe because the oil got too hot?
But why was the oil cooking? Even if the transmission is mad, the cooling should normally still be there, to my little knowledge.

Best regards
Ruedi & Sabina
WASABI A54 #55
P.S.
We are currently in Otranto, Apulia and we will go back to Korfu mid August. Greetings to Jan.

Von: <amelyachtowners@...> on behalf of "trifin@... [amelyachtowners]" <amelyachtowners@...>
Antworten an: <amelyachtowners@...>
Datum: Dienstag, 24. Juli 2018 um 13:38
An: <amelyachtowners@...>
Betreff: [Amel Yacht Owners] ZF25 Transmission Dipstick / Fluid Level

 

IMPORTANT NOTICE


To all Amel Owners,


I have recently had a failure event with my ZF25 gearbox. You can read about it further in Topic #41215 on this forum.  In that failure event, the dipstick for my ZF25 was damaged, and so I needed some means of checking fluid level until a new dipstick was delivered.


I then embarked on a very confusing 2 week journey of trying to determine independently where the correct fluid level should be in a ZF25 gearbox without reference to a dipstick. The results of this are very significant for Amel owners with ZF25 gearboxes.


Please note the following:


1. ZF Marine have informed me that ALL user manuals, parts lists, service manuals, brochures, marketing specs, website data etc for the ZF25 gearbox which state that the fluid capacity of the gearbox is 2.0Litres, are all incorrect.  


2. The correct fluid level for the ZF25 gearbox is 3.0L, but this figure only appears in the original installation drawing of the ZF25 (in Italian), which ZF sent to me and I will post on the forum files archive.  


3. Some owners will already suspect that it is really a 3L box because they will add 2.0L as specified in the manual, and then wonder why they needed to add another full litre to bring it up to the top of their dipstick. These owners have a "short" dipstick and can rest easy.


4. However, some owners will add 2.0l and find that its already close to the full mark on their dipstick.  If you are one of those owners then this message is addressed to you.


5. I know that some Amel 54 models have been supplied with an incorrect dipstick.  This dipstick is too long and reads "full" when 2 litres of fluid is present in the gearbox. These boats have been operating one litre short of fluid, which equates to a fluid level which is about 20mm too low.


7. I do not know who made the change of dipstick in the production process of these boats, but I can guess why they made the change, that is to try and match the disptick to the 2litre capacity widely published by ZF.


I urge all owners to check your dipstick against the following information:


If you have a dipstick with part numbers


3312-301-028 or 3312-201-002 


then you have the wrong dipstick and your ZF25 is at risk of damage due to low fluid level.


If you have a dipstick with part numbers 


3311-301-003 or 3311-201-001


then you have the correct dipstick and you will have the correct 3.0l of fluid in your gearbox.


If you have already experienced the failure and have replaced your gearbox with a new one from ZF, then you will most likely have the correct dipstick. 


Finally, as an absolute measure, the correct fluid level is between 84.5mm and 96.5mm from the mating face of the dipstick hole. 


I do not know if this problem ever affected SM production, but I do know that the documentation error from ZF was present in 2002. 


I am collating a private list of hull numbers which have been affected by this issue, and I would really appreciate if owners would email me privately on the email below

or simply post here on the forum.


I'd like to know your hull number and :

1. whether you have the long (incorrect) dipstick and if you've had transmission troubles,

2. If you have the short (correct) dipstick, have you renewed your transmission (or dipstick) since the the boat was delivered new.



Thank you

Dr Dean Gillies

SY STELLA

AMEL 54 #154

+61 411 967106

trifin (at) soundthinking (dot) com (dot) au



Re: Finally a real forum member

SV Perigee
 

Well done Arno, and we hope you revel in your steep earning curve to come.

David & Leanne
Perigee, SM#396,
On anchor, Le Marin


Re: [Amel Yacht Owners] ZF25 Transmission Dipstick / Fluid Level

Alan Leslie
 

We have the "short dipstick" and we always have put in 3 litres...and it is correct, according to the dipstick.
We have no problems with the ZF gearbox.
I have in years gone by owned some classic Italian cars with ZF gearboxes, and always found the company very helpful with advice and recommendations.
Cheers
Alan
Elyse SM437


Re: Masse Light and March Pump

Duane Siegfri
 

Thanks for the reply Bill!

Duane


Re: ZF25 Transmission Failure

Dean Gillies
 

Hi Danny,
Yes we've changed fluid quite a few times now!  Worth a try as you say.
The Admiral and I love your motto about Ordeal vs Adventure, I plan to use that somewhere on Stella.

Initial delivery quotes were months away, but with great help from forum members I'm starting to get a little traction now on shorter timelines. Maybe our season is not over just yet!

I will of course post about the outcome.

Are you still in NZ. We often visit when we are home in Sydney, I have family near Wellington and Taupo.

Cheers
Dean
   


Re: [Amel Yacht Owners] ZF25 Transmission Dipstick / Fluid Level

Dean Gillies
 

Hi Hanspeter,
Yes, the ZF25 gearbox requires 3 litres of Automatic Transmission Fluid (ATF).

If any Amel owner puts 3 litres into the gearbox and finds the level is higher than the dipstick marks, then you must change your dipstick. ZF will supply the correct one.

Best regards
Dean 


Re: ZF25 Transmission Failure

rossirossix4
 

Hi Danny,
On my ZF25 I usually check the fluid level before each departure.  Each time I do this (over the last 5 years) there is just a bit of air pressure which is released when I rotate the dip stick and break the seal of its o ring.  This slight pressure is surprising to me as i know there is a vent on top of the ZF 25 case which rattles freely.  Do other owners experience this?

Also, my manual instructs me to change the oil by suctioning it out of the filter hole.  I do know that there is a large drain nut on the bottom of the unit and wonder if other owners use that to drain fluid?

Danny, great advice on "attitude, the difference between ordeal and adventure" (although a bit difficult to accept when one is in the middle of an urgent "project").  I think about your adventure carving down truck suspension bushings in Tonga? Fiji? to replace your Vetus coupling rubber inserts--it helped me through the ordeal of replaing mine at the dock in Preveza (the parts were available to me however)!
Bob, SM 429 Elba


Re: [Amel Yacht Owners] ZF25 Transmission Dipstick / Fluid Level

hanspeter baettig
 

Alexandre
pls don't critic ZF!
Do you know the company?
How many empoyees work in the US?
ZF , Zepelin Fabric in Friedriechshafen, Germany, build it
its the biggest gear and auto supplier in the word; in gear business.
In US about 15000 us workers get the salary from ZF.
please in the future think about that!
thank you
Hanspeter
Tamango 2
SM16
Lad Palmas


Von meinem iPhone gesendet

Am 24.07.2018 um 12:44 schrieb Alexandre Uster von Baar uster@... [amelyachtowners] <amelyachtowners@...>:

 

Thanks so much for the info, which is critical.

That is absolutely crazy a company such as ZF could make such mistake and not (really) address it for so many years…
All manufacturers should have been warn about that with the proper dipstick sent…

Alexandre

--------------------------------------------
On Tue, 7/24/18, trifin@... [amelyachtowners] <amelyachtowners@...> wrote:

Subject: [Amel Yacht Owners] ZF25 Transmission Dipstick / Fluid Level
To: amelyachtowners@...
Date: Tuesday, July 24, 2018, 6:38 AM


 









IMPORTANT NOTICE
To all Amel Owners,
I have recently had a failure event with
my ZF25 gearbox. You can read about it further in Topic
#41215 on this forum.  In that failure event, the dipstick
for my ZF25 was damaged, and so I needed some means of
checking fluid level until a new dipstick was
delivered.
I then embarked on
a very confusing 2 week journey of trying to determine
independently where the correct fluid level should be in a
ZF25 gearbox without reference to a dipstick. The results of
this are very significant for Amel owners with ZF25
gearboxes.
Please note the
following:
1. ZF Marine have
informed me that ALL user manuals, parts lists, service
manuals, brochures, marketing specs, website data etc for
the ZF25 gearbox which state that the fluid capacity of the
gearbox is 2.0Litres, are all incorrect.  
2. The correct fluid level for the ZF25
gearbox is 3.0L, but this figure only appears in the
original installation drawing of the ZF25 (in Italian),
which ZF sent to me and I will post on the forum files
archive.  
3. Some owners
will already suspect that it is really a 3L box because they
will add 2.0L as specified in the manual, and then wonder
why they needed to add another full litre to bring it up to
the top of their dipstick. These owners have a
"short" dipstick and can rest easy.
4. However, some owners will add 2.0l
and find that its already close to the full mark on their
dipstick.  If you are one of those owners then this message
is addressed to you.
5. I know
that some Amel 54 models have been supplied with an
incorrect dipstick.  This dipstick is too long and reads
"full" when 2 litres of fluid is present in the
gearbox. These boats have been operating one litre short of
fluid, which equates to a fluid level which is about 20mm
too low.
7. I do not know who
made the change of dipstick in the production process of
these boats, but I can guess why they made the change, that
is to try and match the disptick to the 2litre capacity
widely published by ZF.
I urge
all owners to check your dipstick against the following
information:
If you have a
dipstick with part numbers
3312-301-028 or 3312-201-002 
then you have the wrong dipstick and
your ZF25 is at risk of damage due to low fluid
level.
If you have a dipstick
with part numbers 
3311-301-003 or 3311-201-001
then you have the correct dipstick and
you will have the correct 3.0l of fluid in your
gearbox.
If you have already
experienced the failure and have replaced your gearbox with
a new one from ZF, then you will most likely have the
correct dipstick. 
Finally,
as an absolute measure, the correct fluid level is between
84.5mm and 96.5mm from the mating face of the dipstick
hole. 
I do not know if this
problem ever affected SM production, but I do know that the
documentation error from ZF was present in 2002. 
I am collating a private list of hull
numbers which have been affected by this issue, and I would
really appreciate if owners would email me privately on the
email belowor simply post here on the
forum.
I'd like to know
your hull number and :1. whether you have the long
(incorrect) dipstick and if you've had transmission
troubles,2. If you have the short (correct) dipstick,
have you renewed your transmission (or dipstick) since the
the boat was delivered new.

Thank
youDr Dean GilliesSY STELLAAMEL 54
#154+61 411 967106trifin (at) soundthinking
(dot) com (dot) au




Re: [Amel Yacht Owners] ZF25 Transmission Dipstick / Fluid Level

hanspeter baettig
 

Dear Dean
may be I did not understand your tex.
You put 3 liters of Acf gear oil in the ZF 25?
Pls explain to the the Amel owners. That is new for me ???
kr
hanspeter
Tamango 2
SM 16
Las Palmas

Von meinem iPhone gesendet

Am 24.07.2018 um 13:07 schrieb trifin@... [amelyachtowners] <amelyachtowners@...>:

 

Hi Alexandre,


Yes its interesting.  

I dont know who changed the dipsticks. Personally I don't believe ZF shipped the wrong ones, I think they were changed by someone to try and match the ZF published capacity of 2Litres.

If you use the correct dipstick, you might wonder about the extra fluid needed, but you will always end up with 3l because you use the dipstick as the master reference.

Cheers
Dean

 


Re: [Amel Yacht Owners] Stove won't stay lit [2 Attachments]

John Clark
 

Ryan, that looks like our oven which is an Electrolux.  If you replace it I might be interested  in the door.  Our glass was broken recently and I am trying to avoid buying a new one.  ;)

Regards, John

SV Annie SM 37
Le Marin

On Tue, Jul 24, 2018, 12:33 PM Ryan Meador ryan.d.meador@... [amelyachtowners] <amelyachtowners@...> wrote:
 
[Attachment(s) from Ryan Meador included below]

Hi all,

The right (larger) burner on my stove has been getting more and more
difficult to keep lit, and the last few days it has been impossible.  I
think there is something wrong with the flame-out detection.  It lights
fine, but within a few seconds of me letting go of the knob it goes out, no
matter how long I hold it to pre-heat.  The left burner and the oven work
fine.  I can't find any identifying info on the stove that would allow me
to search for further info, like instructions on adjusting it or
replacement parts.  Can any of you identify it from the attached photos?
Do you have a recommendation on how to fix this problem?

Thanks,
Ryan and Kelly
SM 233 Iteration
Boston, MA, USA


Re: [Amel Yacht Owners] ZF25 Transmission Failure

Danny and Yvonne SIMMS
 

Hi Dean,

I suggested before a double oil change and see how it went. I had little or no hope it would work but was a cheap enough to try test. I agree about replacement rather than repair. I too was told of a long wait. I went on line and found a firm in Seattle that had a new box available. As boat bits go it wasn't that expensive. It was rapidly shipped to Opua New Zealand and I installed it myself. Not a difficult job. Tell the Admiral not to be down hearted, this is life at sea. Cruising has been defined as fixing boats in exotic locations, all part of the fun. I have a motto on the bulkhead by the wheel. "Attitude, the difference between ordeal and adventure" My admiral has acute hearing and always tells me of changes in noises. Always investigate them. There is always a reason.

That's enough homily's for one post.

Regards

Danny

SM 299 Ocean Pearl

On 24 July 2018 at 22:08 "trifin@... [amelyachtowners]" <amelyachtowners@...> wrote:

 

 

Hi All,

After load testing this morning I am 99% sure my ZF25 transmission has failed.  

I know the root cause of the failure, and I will publish separately on that issue later.


I'm told by the ZF representatives that a new transmission will take at least 3 months to supply.  

I don't want to entertain re-conditioning of this box because I know the root cause of the problem.


Our sailing season is over before it started, the admiral is devastated and has lost all confidence in the boat.  We will most likely winterise the boat and go home soon. 

 

However, before I do that I'd like to convert that 99% to 100%, to be absolutely certain that the problem is the gearbox.  I'm finding it difficult to get the required level of professional support here in Kalamata, so I'm hoping for some sage guidance from the group. 


So, the symptoms...


Two weeks ago we started motoring due to no wind. Flat sea, running about 1700-1800rpm.

I started hearing some "modulation" of the engine tone, like wandering RPM. 


I also noticed the disappearance of a "rattle/chatter" sound which has always come from our Morse Control.  It's not a loud rattle, but is clearly transmitted from the gearbox up the gearshift cable and resonates from the hand control unit. (Is that a standard thing - or an early symptom of a gearbox problem?)


I thought we had something stuck on the propeller, so we stopped and I checked it. Nothing.

We started again and the boat would not run up to normal speeds for the RPM we were using.


We stopped again, and I checked the engine room once more. Fluids ok, no leaks, nothing looked out of the ordinary.  So  we continued and I increased the RPM to about 2000-2100, and continued on making only about 4 knots.


After 10 minutes or so, I opened the engine room again to check, and was met with an outburst of smoke, burning smell and everything was very hot.  After stopping and investigating further I found the cause of the overheat was that the shaft brake was stuck closed.  The ZF 25 gearbox was also very hot, and when I opened it to check the fluid again the lower part of the dipstick was melted into an elongated blob of plastic.   

There was no fluid leakage, so I assumed that the fluid  level was still ok. 


I found out how to undo the shaft brake, and wedged a spanner in it to make sure it stayed open. By then everything was cooled down and we proceeded to motor slowly to shore at about 1200rpm. Interestingly the "rattle" mentioned above was back.


We flushed and changed fluids and ran the boat gently for a day or two until we got to a marina.  


On testing the boat, we find that all is well until we exceed 2000rpm. Quite quickly after running at 2100rpm our little rattle stops, then the engine noise starts to waver and sounds like it it reducing in rpm, although the digital readout of rpm does not change from 2100rpm. The boat then starts to slow down from the 8.3 knots it was travelling at with 2000rpm. It drops a couple of knots.  On checking the shaft brake at this point it is still open so that is not the reason for slowing.  If I increase the engine power, we get no more thrust from the propeller.


After this happens, I struggle to generate thrust even at lower rpm.  Leaving everything to cool down completely appears to reset the problem. The rattle comes back, low RPM operation is ok, but when loaded up the gearbox seems to be failing.


The one thing which is niggling in my head is that the engine rpm sounds like it momentarily drops down when this problem occurs, although the rpm readout does not change. However, I can easily increase the engine RPM by pushing the lever, it just does not transfer to the prop, which seems to me like gearbox trouble.


All comments/suggestions appreciated.  We don't really want to give up on our summer cruising, and apart from that its cold back in Sydney!


Thanks all.

Dean

SY Stella 

Amel 54#154





   

 

 


 


 


Re: [Amel Yacht Owners] Re: trasmission oil cooler

eric freedman
 


Re: trasmission oil cooler

Alan Leslie
 

bowman dc60-xcc
Cheers
Alan
Elyse SM437


Re: [Amel Yacht Owners] Re: Stove won't stay lit

Ryan Meador
 

Hi Craig,

I guess I should have taken a closeup of the burner!  There is something special about the hole lined up with the thermocouple (if it is actually a thermocouple?  I was thinking it might be a mercury-filled tube).  Both burners have this feature, and the rings are notched so they only fit in one orientation -- the orientation that has this feature lined up with the thermocouple.  Flame does come out of it, but in a slightly different pattern than the other holes.  The thermocouple is definitely in the flame.

There is a tiny bit of slop in both the base and the burner ring.  I have noticed in the past that if the base is rotated to touch the thermocouple, it won't stay lit.  I assume this is because the base acts as a heat sink and prevents it from reaching the necessary temperature.  I have verified that is not the cause of my current problem.

Thank you for your help!  I'll post a closeup of the burner tonight if this is still unsolved when I get home.

Ryan and Kelly
SM 233 Iteration
Boston, MA, USA


On Tue, Jul 24, 2018 at 1:26 PM sangaris@... [amelyachtowners] <amelyachtowners@...> wrote:
 

Hi Ryan and Kelly,

It's hard to see from the picture, which I magnified, but it looks like there is a gap in the ring of flame holes right across from the tip of the thermocouple. If that's the case,  can you see one of the flame cones actually touching the thermocouple when it's on?  If there is a gap, maybe you can just rotate then ring, which may have come loose and rotated a bit, causing the problem.  Just a guess. (On mine the holes are continuous all around - no gap.)
Cheers, Craig, SN68 Sangaris, Brunswick, GA


---In amelyachtowners@..., wrote :

Hi all,

The right (larger) burner on my stove has been getting more and more
difficult to keep lit, and the last few days it has been impossible.  I
think there is something wrong with the flame-out detection.  It lights
fine, but within a few seconds of me letting go of the knob it goes out, no
matter how long I hold it to pre-heat.  The left burner and the oven work
fine.  I can't find any identifying info on the stove that would allow me
to search for further info, like instructions on adjusting it or
replacement parts.  Can any of you identify it from the attached photos?
Do you have a recommendation on how to fix this problem?

Thanks,
Ryan and Kelly
SM 233 Iteration
Boston, MA, USA


trasmission oil cooler

Giovanni TESTA
 



Hi to all.
it is my intention to have as spare a new trasmission oil cooler.
Because I m not on board, may I know please the Bowman code ?
Many thanks in advance
Buon Vento
Giovanni Testa
sv EUTIKIA SM 428
Hi to all.
it is my intention to have as spare a new trasmission oil cooler.
Because I m not on board, may I know please the Bowman code ?
Many thanks in advance
Buon Vento
Giovanni Testa
sv EUTIKIA SM 428
----Messaggio originale----
Da: amelyachtowners@...
Data: 24-lug-2018 13.41
A:
Ogg: [Amel Yacht Owners] Re: ZF25 Transmission Failure

 

One reason for the transmission heating up "could be" that your transmission oil cooler is compromised.  You said the dipstick was melted and since there was no leakage of fluid, you assumed that it was still full of transmission fluid.


I had a similiar problem with my Amel SM.  The cooler developed a hole in the cooler tubes that permitted the seawater and the transmission fluid to mix.  Eventually the hole in the cooler tubes was big enough, that the suction from the engine seawater pump sucked the fluid out of the transmission.  Prior to the complete failure of the transmission, the seawater mixed with the transmission fluid and rusted the inner workings of the transmission.  So, in my case, the transmission had to be replaced.

Have you ever noticed that the engine exhaust/water leaves an oil sheen on the water?

Pull some of the fluid out of the transmission and see if it looks right, or is milky or watery.

Here's the thing, if you have to replace the transmission, be sure to replace the transmission cooler.  I'm not sure of a reasonable interval to replace them, but for $200 or so, it's good insurance.  Mine failed at about 2,000 engine hours.

Duane
Wanderer, SM#477



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