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Go Back   SailNet Community > On Board > Gear & Maintenance > Oil level in Yanmar 2GM
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Thread: Oil level in Yanmar 2GM Reply to Thread
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Topic Review (Newest First)
04-20-2009 10:43 AM
JohnRPollard
Quote:
Originally Posted by L124C View Post
No...Yanmar was indicating they were not very comfortable with a 15 degree installation. Hence the term "absolute maximum" installation angle. Of course, this wasn't the issue. The motor has been installed and functioning for over 20 years (two of which, the PO's owned it, PPO is dead). I can read a manual, and MY manual states: "The oil level (2.0 liters) should correspond to UPPER mark on the dipstick, with an installation angle of 7 degrees." Given the discrepancy with my dipstick, this begs the question; how much for a steeper installation? Which, Yanmar choose not to answer. They also completely ignored the discrepancy with the dipstick. Given that Yanmar acknowledge an extreme installation angle, I would have thought they would either make a suggestion or, say "we suggest you consult your local Yanmar dealer". NOT; If it worked for the previous owners, go with that! Thats really lame!
The place in NJ sees actual installations and gave me a straight forward opinion in response to the question I asked. I feel comfortable with that.
L,

The reason I and others are concerned about disregarding the manufacturer's engine spec and adding an extra quart of oil is because doing so goes against a common understanding that overfilling an oil reserve can cause serious damage to the engine. But it sounds like you feel you got the best info from a reputable source, so I won't belabor that point. SailNet has lots of good amateur advice, but that only goes so far and in your case I would certainly defer to the experts.

You know what would be very helpful in a situation like this? Wouldn't it be great if we could get a highly knowledgeable Yanmar rep to come over and review a thread on SailNet, and offer up some solid advice from which everyone could benefit? Maybe someone from Mack Boring?

[P.S. As for the manual advice on oil level, I assume you are referring to the Yanmar "Operation Manual" ? My mention of variability on the dipstick readings was in reference to information contained in the Yanmar "Service Manual". This is a different publication which is the manual used by service reps/techs. It's much more comprehensive than the basic "Operation Manual", full of exploded views and parts schedules, etc, including the transmission. Very handy to have if you own one of these Yanmars! But, like all the Yanmar manuals, it still has a few rough patches that result in seemingly conflicting info.]
04-19-2009 04:11 AM
L124C
Quote:
Originally Posted by JohnRPollard View Post
I suppose Yanmar was repeating the engineering specs for the engine, which say 2 qts oil for an installation up to 15 degrees inclination.

Unless I could ABSOLUTELY confirm that I had a larger/deeper oil pan, or some other modification to the oil reserve capacity, I would be very reluctant to deviate from the manufacturer's spec.

[Incidentally, my manual indicates that when full-up, the oil should register somewhere between the bottom and top marks on the dipstick. It does not say that it should register at the top of the dipstick. This may be how they account for variations in installation angles.]
No...Yanmar was indicating they were not very comfortable with a 15 degree installation. Hence the term "absolute maximum" installation angle. Of course, this wasn't the issue. The motor has been installed and functioning for over 20 years (two of which, the PO's owned it, PPO is dead). I can read a manual, and MY manual states: "The oil level (2.0 liters) should correspond to UPPER mark on the dipstick, with an installation angle of 7 degrees." Given the discrepancy with my dipstick, this begs the question; how much for a steeper installation? Which, Yanmar choose not to answer. They also completely ignored the discrepancy with the dipstick. Given that Yanmar acknowledge an extreme installation angle, I would have thought they would either make a suggestion or, say "we suggest you consult your local Yanmar dealer". NOT; If it worked for the previous owners, go with that! Thats really lame!
The place in NJ sees actual installations and gave me a straight forward opinion in response to the question I asked. I feel comfortable with that.
04-16-2009 10:34 AM
JohnRPollard I suppose Yanmar was repeating the engineering specs for the engine, which say 2 qts oil for an installation up to 15 degrees inclination.

Unless I could ABSOLUTELY confirm that I had a larger/deeper oil pan, or some other modification to the oil reserve capacity, I would be very reluctant to deviate from the manufacturer's spec.

[Incidentally, my manual indicates that when full-up, the oil should register somewhere between the bottom and top marks on the dipstick. It does not say that it should register at the top of the dipstick. This may be how they account for variations in installation angles.]
04-16-2009 10:26 AM
codmander probly motor angle 8% best 15% max,,, could change your stick reading no matter 2 quarts for that motor than again took me a week just to find the dam dip stick .............(((outboard guy)))
04-16-2009 04:01 AM
L124C
Quote:
Originally Posted by JohnRPollard View Post
That is interesting.

Would you care to share the advice you received from Yanmar?

Also, according to my Service Manual, the 2 qt oil capacity for the 2GM is for an engine installed with an angle between 8 and 15 degrees.

It makes sense that there could be more than one dipstick for the same engine, depending on installation angle. But I would have thought that any variation in dipstick was to allow for a correct reading of the oil level based on installation angle, rather than for a different quantity of oil.

Another possibility is that you have a larger/deeper oil pan that allows for a greater lubricating oil reserve. I've never seen that mentioned in my Yanmar documentation, but I know Betamarine has something similar....
When someone in this thread said "why not contact Yanmar?" I felt silly. Why didn't I think of that?! It's funny, but because the boat builder is long out of business, I'm not used to thinking in those terms with regard to the boat!
Anyway, I emailed Yanmar and estimated a 15 degree installation. When I actually measured it later, it turned out to be 10. In an case, Yanmar stated 15 degrees was the absolute maximun installation angle. Ironically, they then stated that if two quarts worked for the previous owners, they would advise me to do the same. Not very scientific! I expected them to say something like; "a 15 degree installation requires __ liters of oil. As I stated in an earlier post, my manual specifies a little over two quarts for a 7 degree installation. But yes, Yanmar must use different oil pans which is fine with me. A larger oil reservoir is better as far as I'm concerned. It's just strange it's not reflected in my manual which looks original. According to the surveyor that referred me to the place in NJ, they have probably seen every type of Yanmar installation ever done. They apparently didn't think the dipstick was unusual. Just goes to show - can't believe everything you read!
04-15-2009 04:40 PM
JohnRPollard
Quote:
Originally Posted by L124C View Post
Emailed a Yanmar service/training center in NJ w/ pictures of the motor installation and the dipstick. Here is their response:
"It is our recommendation that you fill the crankcase oil to the "Full"
mark on the dipstick. This will give you correct lubrication under all
conditions and engine angles."
This makes sense to me so I'm going with it. The range of opinions I received was amazing, including one from Yanmar that made no sense at all. BTW, the dipsticks on Yanmar 2GM's differ. I have a dock mate who has the same motor and dipstick I do (2 1/2" between high and low marks). His motor is mounted with a mere 3 degree angle, compared to mine at 10 degrees. So, not all are 3/4" apart.
That is interesting.

Would you care to share the advice you received from Yanmar?

Also, according to my Service Manual, the 2 qt oil capacity for the 2GM is for an engine installed with an angle between 8 and 15 degrees.

It makes sense that there could be more than one dipstick for the same engine, depending on installation angle. But I would have thought that any variation in dipstick was to allow for a correct reading of the oil level based on installation angle, rather than for a different quantity of oil.

Another possibility is that you have a larger/deeper oil pan that allows for a greater lubricating oil reserve. I've never seen that mentioned in my Yanmar documentation, but I know Betamarine has something similar....
04-15-2009 02:39 PM
L124C
Got an answer!

Emailed a Yanmar service/training center in NJ w/ pictures of the motor installation and the dipstick. Here is their response:
"It is our recommendation that you fill the crankcase oil to the "Full"
mark on the dipstick. This will give you correct lubrication under all
conditions and engine angles."
This makes sense to me so I'm going with it. The range of opinions I received was amazing, including one from Yanmar that made no sense at all. BTW, the dipsticks on Yanmar 2GM's differ. I have a dock mate who has the same motor and dipstick I do (2 1/2" between high and low marks). His motor is mounted with a mere 3 degree angle, compared to mine at 10 degrees. So, not all are 3/4" apart.
04-15-2009 02:35 PM
L124C
Got an answer!

Emailed a Yanmar service/training center in NJ w/ pictures of the motor installation and the dipstick. Here is their response:
"It is our recommendation that you fill the crankcase oil to the "Full"
mark on the dipstick. This will give you correct lubrication under all
conditions and engine angles."
This makes sense to me so I'm going with it. The range of opinions I received was amazing, including one from Yanmar that made no sense at all. BTW, the dipsticks on Yanmar 2GM's differ. I have a dock mate who has the same motor and dipstick I do (2 1/2" between high and low marks). His motor is mounted with a mere 3 degree angle, compared to mine at 10 degrees. So not all are 3/4" apart.
03-15-2009 11:35 AM
timebandit Yep

Sorry I read the post wrong.

Is there a part number on the blade of the dipstick so that you can check it is the correct one?

Quote:
Originally Posted by L124C View Post
Yes. Besides, if i wasn't, it would make the level read high, not low, right?
03-14-2009 03:56 PM
JohnRPollard
Quote:
Originally Posted by L124C View Post
Why specifically Yanmar owners? I resemble that remark! The 2 quart spec in the manual is for a 7 degree installation. My boat is a Yankee and the Yanmar replaced a A4. The engine is mid ships and the prop exits about 5 feet behind the engine, literally out of the keel. It looks like the motor might be mounted steeper than 7 degrees. I wonder if that accounts for the different dipstick. My high low marks are about 3 inches apart. The example in the manual shows the marks much closer. Hard to believe some dipstick actually replaced the dipstick with the wrong dipstick, but then.....
You've got the wrong dipstick.

The high/low marks should be about 3/4" apart, or thereabouts -- no more than 1".

Somebody else in your marina must have a 2GM. Borrow their dipstick and re-calibrate yours.
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