 |
|
06-08-2011, 09:08
|
#1
|
Registered User
Join Date: Aug 2011
Posts: 3
|
Piece of Broken Starter in Engine
Hi,
I've got a treasured rebuilt Yanmar 3GMD that I installed myself 6 years ago. The purr of that engine means a lot to me.
I'm also, due to circumstances, cheap. I installed a new chinese starter last season and the housing of the starter gear broke inside the engine. I took it off and fished a large broken piece from the place where the starter gear meets the flywheel. I fitted it back on the starter and discovered a smaller piece (about 1/2 inch flat square) missing. Where did it go? How hard will it be to retrieve? What bad things could happen from this piece being somewhere inside near the flywheel? I replaced the starter and the engine starts and runs like it used to. I think I do hear a little metallic "tinkling" sound every once in a while.
My nightmare is that the little piece of metal will get into the flywheel teeth and be driven through the engine casing. Is that rational?
Thanks for your advice.
Dan
|
|
|
06-08-2011, 09:13
|
#2
|
Registered User
Join Date: Dec 2009
Posts: 2,959
|
Re: Piece of broken starterin engine
Yes, it very likely will cause significant damage. The clearances in there are often very small. It's waiting until you really need the engine...
|
|
|
06-08-2011, 09:28
|
#3
|
Registered User
Join Date: Dec 2008
Location: St. Georges, Bda
Boat: Rhodes Reliant 41ft
Posts: 4,131
|
Re: Piece of Broken Starter in Engine
No opening at the bottom of the adaptor plate on this engine?
__________________
so many projects--so little time !!
|
|
|
06-08-2011, 09:34
|
#4
|
Registered User
Join Date: Aug 2011
Posts: 3
|
Re: Piece of Broken Starter in Engine
I'm looking for an engine diagram. Not sure where the adapter plate is.
|
|
|
06-08-2011, 09:37
|
#5
|
Senior Cruiser

Join Date: Oct 2007
Location: 29° 49.16’ N 82° 25.82’ W
Boat: Pearson 422
Posts: 16,307
|
Re: Piece of Broken Starter in Engine
Get a magnetic parts grabber (small magnet on the end of a flexible rod) and go fishing.
__________________
The water is always bluer on the other side of the ocean.
Sometimes it's necessary to state the obvious for the benefit of the oblivious.
Rust is the poor man's Loctite.
|
|
|
06-08-2011, 09:50
|
#6
|
Registered User
Join Date: Jan 2007
Posts: 223
|
Re: Piece of Broken Starter in Engine
Blue is referring to.... some bell housings have a plate on the bottom that can be removed. Some have a plate bolted to the face of the bell housing (engine side under the starter). Usually this is difficult to get to because of the lack of access under the engine. If you can get to it then it is the way to go...just a couple of screws and the debris will fall out.
|
|
|
06-08-2011, 09:50
|
#7
|
Registered User
Join Date: Dec 2008
Location: St. Georges, Bda
Boat: Rhodes Reliant 41ft
Posts: 4,131
|
Re: Piece of Broken Starter in Engine
Quote:
Originally Posted by logisoft
I'm looking for an engine diagram. Not sure where the adapter plate is.
|
I'm not familiar with this engine, but many have an adaptor plate between the transmission and the power plant. There is sometimes a cutaway section at the bottom of the adaptor plate for clearing oil leak, gunk,etc.
You can normally see the ring gear inside.
__________________
so many projects--so little time !!
|
|
|
06-08-2011, 10:00
|
#8
|
Eternal Member
Join Date: Aug 2006
Location: North of Baltimore
Boat: Ericson 27 & 18' Herrmann Catboat
Posts: 3,798
|
Re: Piece of Broken Starter in Engine
Pull the transmission off if you don't have enough clearance to fish the piece out you will have to yank the bell housing.
Stay away from Chinese aftermarket stuff.
|
|
|
07-08-2011, 17:27
|
#9
|
Registered User
Join Date: Aug 2011
Posts: 3
|
Re: Piece of Broken Starter in Engine
Thanks, Gang. I'll try the magnetic dealie and look for an access plate. I'll keep you apprised of my progress. Actually, I'm so busy it might have to wait until dry dock and we'll use an outboard for the rest of the season.
Yeah, no more chinese stuff, especially when it goes into the engine.
Dan
|
|
|
07-08-2011, 17:40
|
#10
|
Registered User
Join Date: Feb 2009
Location: A real life Zombie from FL
Boat: Gulfstar 53 - Osiris
Posts: 5,416
|
Re: Piece of Broken Starter in Engine
Quote:
Originally Posted by logisoft
. . . My nightmare is that the little piece of metal will get into the flywheel teeth and be driven through the engine casing. Is that rational?. . . Dan
|
What is more likely to happen is the missing piece of metal will get jammed between the bell housing and the flywheel teeth breaking off one or more teeth. Then you have a very expensive problem of replacing the flywheel.
- - I'd advise going ahead and remove the transmission to get access to the bell housing and find the missing parts. At the same time you can check for any rear seal leaks and also see if your dampner plate springs are good and not rusted.
|
|
|
16-03-2012, 08:26
|
#11
|
Registered User
Join Date: Apr 2011
Location: Cambridge MD
Boat: Carter offshore 35
Posts: 393
|
Re: Piece of Broken Starter in Engine
I to have had the same problem with my 3gm30. The casting on mine was aluminum so the magnet was out. I got lucky and was able to get all of mine out. I am sorry to hear about your problem but at the same time it puts me at ease. I thought it was the Chinese casting also.The starter shop had said it was kick back on the engine that caused it. I tried another starter after having the engine checked out and it did it again. got lucky again and got all the pieces. Put in an OEM starter and have my fingers crossed.
|
|
|
16-03-2012, 09:02
|
#12
|
Registered User
Join Date: Feb 2012
Location: Punta Banda, Ensenada. and Canada
Boat: 28Ft Piver Encore, Tri-Maran, Anchored in San Diego.
Posts: 728
|
Re: Piece of Broken Starter in Engine
As far as Chinese parts go,,i wouldn't be so critical,,since most of our parts are manufactured in Mexico, Brazil,Taiwan, etc,,it is a rare thing indeed to find a part that's stamped "USA" and even then you could be looking at a re-pop part(some are very poor quality) as to the part in question, its called the starter drive gear bell housing and if they are weak in any way they do break in the places you mentioned.
Best advice is do like others have suggested,,and fish around with a magnet probe until you have enough of the pieces gathered to fill in the broken section,,but don't rest until you do.
Once you have all the pieces and match them to the open space they departed from,,you can cease worrying.
Oh,,P.S. improper installation of the starter can lead to such a failure also.
Best of Luck Matey..
|
|
|
16-03-2012, 10:13
|
#13
|
Registered User
Join Date: Mar 2007
Location: Santa Cruz
Boat: SAnta Cruz 27
Posts: 7,198
|
Re: Piece of Broken Starter in Engine
If the engine runs OK and the piece is aluminum, fuggetaboutit. Even if you turn the engine upside down and it falls into the flywheel, those steel teeth will turn that aluminum to dust. Or you can spend a day when you could have been sailing pulling the trannie and picking out the piece of metal.
|
|
|
16-03-2012, 16:15
|
#14
|
Registered User
Join Date: Oct 2011
Posts: 2,687
|
Re: Piece of Broken Starter in Engine
How common is kickback? In 40 years of owning diesels I have never had that problem nor heard of it. I wonder if the rebuild shop was doing a little of CYA because they didnt know what the problem was? A few years ago I had a Yanmar starter rebuilt at a local shop, and when I put it back on it sounded horrible. I took it back to them and they discovered that they had put the wrong gear on it. They were good about correcting the problem, but it could have done major damage if it had been used for any length of time. And Oh Yes, I am very familiar with kickback in old hand crank gas engines. _____Grant.
|
|
|
16-03-2012, 18:17
|
#15
|
Registered User
Join Date: Mar 2009
Location: Australia, Hervey Bay QLD
Boat: Boden 36 Triple chine long keel steel, named Nekeyah
Posts: 909
|
Re: Piece of Broken Starter in Engine
I am inclined to agree with Don. However, if you really want to get it out, before you pull everything to bits, try putting a good lump of stiff grease on the ring gear (enough to scrape on the bell housing) and rotate the engine very slowly by hand. You may pick up the bits.
Regards,
Richard.
|
|
|
 |
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Rate This Thread |
Linear Mode
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
Advertise Here
Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
Vendor Spotlight |
|
|