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high trans temp alarm

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smitty
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high trans temp alarm

Post by smitty »

I have a 2007 28TE. This past weekend I had a high trans temp alarm go off. I checked the transmission and it was cool. Now as soon as I start the engine cold, the alarm goes off. Any ideas? Thanks for any feedback.

Steve
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Sisu22
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Re: high trans temp alarm

Post by Sisu22 »

What engine and gear?
1994 TE 28' w/ Cummins 250
smitty
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Re: high trans temp alarm

Post by smitty »

It is a 315 yanmar with zf 63 transmission. One problem is I can’t find the sensor on tranny or heat exchanger
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RobS
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Re: high trans temp alarm

Post by RobS »

smitty wrote: Sun Sep 16, 2018 1:16 pm It is a 315 yanmar with zf 63 transmission. One problem is I can’t find the sensor on tranny or heat exchanger
Quite possible it does not exist and the alarm is not actually connected to anything and is giving you a false alarm because of a fault in the wiring. Post some really good pictures of your tranny and gear cooler, from several angle and perspectives.
Rob S.
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1974 Chris Craft 36' Commander Tournament
Cummins 6BTA 330B's

(Former Owner)
"TOY-RIFIC" 2000 28TE, 6LP, Hull 408

Luck is the residue of good design.
smitty
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Re: high trans temp alarm

Post by smitty »

Rob,
Here are the pictures. I also posted to maintenance forum since I realized that might be the proper place.
port.JPG
back.JPG
starboard.JPG
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RobS
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Re: high trans temp alarm

Post by RobS »

Good pics. You do not have a gear temp or pressure alarm.
Rob S.
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1974 Chris Craft 36' Commander Tournament
Cummins 6BTA 330B's

(Former Owner)
"TOY-RIFIC" 2000 28TE, 6LP, Hull 408

Luck is the residue of good design.
WillieC
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Re: high trans temp alarm

Post by WillieC »

Once again. Rob is The Guy.
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Tree
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Re: high trans temp alarm

Post by Tree »

RobS wrote: Fri Sep 21, 2018 11:38 am Good pics. You do not have a gear temp or pressure alarm.
What would I need to look for if myself or anyone else had one? (I’m pretty sure I don’t based on those pictures)
Fisher Price 2
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Yanmar 6LP-STE
Built in Portsmouth RI, USA - Berthed in Portsmouth Hampshire, United Kingdom.
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RobS
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Re: high trans temp alarm

Post by RobS »

Tree wrote: Fri Sep 21, 2018 4:37 pm What would I need to look for if myself or anyone else had one? (I’m pretty sure I don’t based on those pictures)
There would be a temperature switch (looks like a sending unit) installed either down at the valve block or T'd into the gear cooler. All that is in his pictures is the neutral safety switch.

https://www.sbmar.com/articles/redundan ... insurance/

https://www.sbmar.com/articles/zf-63a-p ... locations/
Rob S.
"TENACIOUS"
1974 Chris Craft 36' Commander Tournament
Cummins 6BTA 330B's

(Former Owner)
"TOY-RIFIC" 2000 28TE, 6LP, Hull 408

Luck is the residue of good design.
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Tree
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Re: high trans temp alarm

Post by Tree »

Cheers for that Rob. It’s quite prominent and I’m pleased to say I don’t have one.
Fisher Price 2
Hull Number AUL28489L900
Yanmar 6LP-STE
Built in Portsmouth RI, USA - Berthed in Portsmouth Hampshire, United Kingdom.
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RobS
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Re: high trans temp alarm

Post by RobS »

Tree wrote: Sat Sep 22, 2018 8:05 am ...I’m pleased to say I don’t have one.
Why would you be pleased to not have a high temp or low pressure alarm on your gear?
Rob S.
"TENACIOUS"
1974 Chris Craft 36' Commander Tournament
Cummins 6BTA 330B's

(Former Owner)
"TOY-RIFIC" 2000 28TE, 6LP, Hull 408

Luck is the residue of good design.
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Tree
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Re: high trans temp alarm

Post by Tree »

Something less to go wrong....

Almost 2000 hours on the engine now. Oil is swapped out every 50 hours, trans oil swapped out every 50 hours coolers rydlyme once a year etc. The engine gets a lot of love and maintenance. I shouldn’t have reason for the transmission to be getting hot - oil comes out with no sign of degradation each time.

The only things to have failed me on this engine have been a Toyota fitted core plug and a solenoid. I like my engines to be mechanical as possible.
Fisher Price 2
Hull Number AUL28489L900
Yanmar 6LP-STE
Built in Portsmouth RI, USA - Berthed in Portsmouth Hampshire, United Kingdom.
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Re: high trans temp alarm

Post by Norseman »

. Oil is swapped out every 50 hours, trans oil swapped out every 50 hours
Wow, overkill?
I change my oil every 125 hours as per the Yanmar bible.
Why every 50 hours, do you know something I don’t? :mrgreen:
2001 28TE, 6LP-STE, 1,337 hrs, 19X18 four-blade wheel.
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Tree
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Re: high trans temp alarm

Post by Tree »

I machine parts for the local yanmar and Volvo dealers. I once mentioned to one of the mechanics if he had any oil for my engine in his van. Ever since he drops off his left over “top up” gallon cans each week and as a result I have an abundance of yanmar spec oil and Volvo spec oil. I keep the yanmar stuff, a friend who has the a Volvo gets that.

I only swap out the filters once a year but it means my oil stays pretty golden with no chance of sludge build up on what some people would think is a high hour engine.
Fisher Price 2
Hull Number AUL28489L900
Yanmar 6LP-STE
Built in Portsmouth RI, USA - Berthed in Portsmouth Hampshire, United Kingdom.
WillieC
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Re: high trans temp alarm

Post by WillieC »

Ah, spare oil.

My high school buddy's father was the local Standard Oil distributor. They had a certain monthly allotment for gasoline "spillage", no small portion of which ended up in a 250 gallon above ground tank in their back yard, and subsequently into several of our cars. We called it The Sacred Flow.

My dad, on the other hand, was Packaging Manager at General Brewing's Lucky Lager plant. We didn't spill much of that.
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