Need part ID for Yanmar 3YM30 engine
- Thread starter stuartsw
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- yanmar 3ym30
It does look like the top of the dip stick, but the dip stick is intact and functional.
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Almost looks like a push rod for something? Maybe the blender? My 3YM book is on the boat, so I'll look on Sunday EST.
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Wow!
That is a puzzle.
It does look like the top end of a dip stick.
https://j109.org/docs/yanmar_3ym30_parts_catalog.pdf page 15
BUT,if so both ends have been cut off cleanly ( why would anyone do that?)
The diameter of the end cap is way larger than the dip stick tube, so how do it get into the sump?
There is no way it could have been dropped in.
If it has been in the sump for any length on time it would have rolled and tumbled about and end up at least polished. It isn't,
Beyond me and I am hanging out for an answer to this one.
gary.
That is a puzzle.
It does look like the top end of a dip stick.
https://j109.org/docs/yanmar_3ym30_parts_catalog.pdf page 15
BUT,if so both ends have been cut off cleanly ( why would anyone do that?)
The diameter of the end cap is way larger than the dip stick tube, so how do it get into the sump?
There is no way it could have been dropped in.
If it has been in the sump for any length on time it would have rolled and tumbled about and end up at least polished. It isn't,
Beyond me and I am hanging out for an answer to this one.
gary.
Have never seen anything like it on my 3YM30. The internal side of the oil dipstick is flat and the one appearing in the photo is round. The dipstick for the transmission doesn't look anything like the photo. BUT it definitely looks like some sort of dipstick. Mystery to me!
Thanks for looking that up! The injectors are intact on my engine, and the part’s pins at either end don’t match the tapper stopper drawing.
A buddy from Hunter Association of Puget Sound found the part. Page 15 part #7, “cap”. It seems that Yamar provided for a starboard dip stick as an option, and just capped the hole. Read this entry on cruiser’s forum which describes the issue and has photos of the part in question along with placement.
OK. Now I can sleep.
When you said "Morning check on cruise revealed a sump full of oil."
You meant "bilge" full of oil and that was where the part was found.
Have fun cleaning up.
Gary
When you said "Morning check on cruise revealed a sump full of oil."
You meant "bilge" full of oil and that was where the part was found.
Have fun cleaning up.
Gary
I used a piece of Rescue Tape around the rubber plug to securely seat the part. Six weeks later, it is still securely seated.
Whew, that's harsh! I give him the benefit of the doubt, as he undoubtedly assumed it was the engine sump, i.e., the oil sump, that the OP was referring to. But you are correct, the oil ended up in the external sump, not the bilge.
It turns out that not all boats have sumps, anything that drips drips into the bilge. But fortunately, I don't think that's the case here.
I wonder why, when the plug was removed, you lost oil through the opening. Is there a tub coming up, like the dip stick side, or just a hole in the oil sump?
noun
a pit, well, or the like in which water or other liquid is collected.
Machinery. a chamber at the bottom of a machine, pump, circulation system, etc., into which a fluid drains before recirculation or in which wastes gather before disposal.
Mining.
British Dialect. a swamp, bog, or muddy pool.
I am Australian. My father was a mechanic. Sorry.
Gary
a pit, well, or the like in which water or other liquid is collected.
Machinery. a chamber at the bottom of a machine, pump, circulation system, etc., into which a fluid drains before recirculation or in which wastes gather before disposal.
Mining.
- a space where water is allowed to collect at the bottom of a shaft or below a passageway.
- a pilot shaft or tunnel pushed out in front of a main bore.
British Dialect. a swamp, bog, or muddy pool.
I am Australian. My father was a mechanic. Sorry.
Gary
I use the dipstick tube on the side of the motor to pump out the old oil with a pump attached to a cordless drill.
The reason for the oil discharge is because of pressure inside the motor, spraying liquid out of the small dipstick opening, as it's running. If you left the front dipstick out, it would probably do the same thing. I once had a race car that would blow a quart of oil (or more) per session into the catch bottle, until I increased the size of the vent tube, to relieve more pressure.
The reason for the oil discharge is because of pressure inside the motor, spraying liquid out of the small dipstick opening, as it's running. If you left the front dipstick out, it would probably do the same thing. I once had a race car that would blow a quart of oil (or more) per session into the catch bottle, until I increased the size of the vent tube, to relieve more pressure.