Leaky Oil line on 1gm10 Yanmar 8 hp

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symmes1

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Dec 10, 2003
18
Bristol 27 Tampa, Fla.
I have a leak in my oil line that connects to the side of the engine goes around the front of the engine and reconnects next to the oil filter. I called the local yanmar dealer and they want me to send a picture of the line. They are not positive of what I am talking about. I don't have the owners manual or info like that. I do know it is a 1gm10c yanmar. That is what it says on the side of the engine. The serial number is 0111. I don't even know what year it is.
I was talking to a friend and he suggested to make a oil line out of a piece of thick hose. Could this be done? If someone knows how to do this I would appreciate it. If I go through Yanmar I know that it will be expensive. If it could be done with a thick hose it might last longer too. The pipe looks like it just rusted through. It might be an original. I don't know.
 
Hermit Scott

Hermit Scott

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Sep 25, 2008
2,288
C30 Event Horizon Port Aransas
This is not a big deal to fix. But even if you did replace it, you could order it and it would probably be less the $20.
Depending on the size of the oil lline you could probably use fuel line bought at any auto parts store. Take the line off so you can take it with you to fit for a new hose. Use a pipe cutting tool that you rotate around the pipe. It has a little wheel like a disc. Then use a phillips head screw driver to ream out the hole so you have full flow through there. Then install the two ends back on the engine and fit the hose you bought to it and double clamp both ends. Piece of cake.
Also cut all the middle out of the old pipe. Just leave 2" or so from the ends where the bolts go through. You don't want any rusty pieces of metal coming loose and going into your oil pan if you can help it.
 
Ken13559

Ken13559

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Oct 29, 2005
2,362
Hunter Marine 326 303 Singapore
I believe the line you refers to is about 1/4" diameter. both ends has banjo fitting. my friend changed his 'cos it corrodes and leaks oil. some salt water splashing about in the engine compartment causes the corrosion.
 
wonkodsane

wonkodsane

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Jul 25, 2009
270
Catalina 1989 C30 Mk II Herrington Harbour South, MD
Mail them a picture and order the part. Hot oil eats hoses.
 
kloudie1

kloudie1

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Nov 6, 2006
10,048
Hunter 34 Mandeville Louisiana
Symmes.. Does it look like this ?? Item # 11?.. There was a post that may give a hint about a metal clip wearing through a water pipe.. I wonder if the support clip (# 14 in the drawing) has worn through the line? A good auto brake line shop could repair the pipe by brazing a split sleeve over the hole.. but a new line may be cheaper than having that done.. If that is the part, and it is not the other line, the part number is 128170-39020.
 

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kloudie1

kloudie1

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Nov 6, 2006
10,048
Hunter 34 Mandeville Louisiana
Sorry.. if it is the other line, #10, the part # is 128170-39010
If it is the other pipe, item 1, part# is 128170-39200
 
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symmes1

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Dec 10, 2003
18
Bristol 27 Tampa, Fla.
Thanks Kloudie for the picture. My pipe is very similiar. It is a pipe like 10 and 11 combined. It is not two pipes. It is one pipe that connects where 11 does on the side of the engine back to the oil filter. I never saw a clip like 14. This is an old boat (Bristol 27 and an old engine). I don't know the year of the engine but I know it is old. The engine really runs great. I appreciate your concern.
 
kloudie1

kloudie1

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Nov 6, 2006
10,048
Hunter 34 Mandeville Louisiana
OOPS !! Hope I didn't cause confusion, Symmes.. The book is a 1982 copy.. and may be older than your engine.. seems like they didn't put the "10c" designator on until the next series of 1GM's.. One line would be an improvement!! ... Dunno... Good luck with it..
 
jrpla

jrpla

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Apr 10, 2007
34
Beneteau First 32 Fajardo, PR
what is the # on the 2GM

kloudie1 said:
Sorry.. if it is the other line, #10, the part # is 128170-39010
If it is the other pipe, item 1, part# is 128170-39200
Click to expand
Hi, kloudie

I need to replace the one on the 2GM, the one that attach at the back,

do you have the part # for this one;

Thanks;
jrpla
 
S

symmes1

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Dec 10, 2003
18
Bristol 27 Tampa, Fla.
Thanks Kloudie for your information. You didn't confuse me. I have seen pictures of the engine on the internet but not a name for the oil line. I have called the yanmar dealer but they are not sure about the part. I am seeing if there is a easier way to fix my problem. This website has helped me in the past. There are people on this site that have considerable knowledge on mariner problems and issues. I appreciate your picture. I have a limited knowledge of mechanics and working on boats. With this old boat and motor I am sure I will be busy working on them.
 
jrpla

jrpla

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Apr 10, 2007
34
Beneteau First 32 Fajardo, PR
Hermit Scott said:
I'm pretty sure cold oil eats regular hoses also. You have to get neoprene or something that can handle oil.
Click to expand
Hi,

you can have it made in copper, I have a few friends that haver their oil pipe made this way.

take it to a machine shop
 
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Hermit Scott

Hermit Scott

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Sep 25, 2008
2,288
C30 Event Horizon Port Aransas
I had a low pressure feuloil line rust through and start leaking on my YSM12 yanmar. I went to an autoparts store and bought a few feet of line for a couple of bucks. I intended the repair to only be temporary but I have 15' of the same line from the tank to the filters so what is the difference?
The only line that has to be original metal is the high pressure injector line.
Look on a harley with a seperate oil tank. They use oil compatible hose from the engine to the oil tank reservior under the seat.
 
kloudie1

kloudie1

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Nov 6, 2006
10,048
Hunter 34 Mandeville Louisiana
JRPLA.. The number for the 2 GM and 2GM(F) is 128270-39200 ..
Good luck.. Be sure to get new copper washers for the banjo end fittings.
 
Mike Holibar

Mike Holibar

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Jun 26, 2007
106
Freedom F39 Lyttelton New Zealand
jrpla said:
Hi,

you can have it made in cooper, I have a few friends that haver their oil pipe made this way.

take it to a machine shop
Click to expand
Great idea. I had the rear pipe rust out on a 3HM. Copper would be a big improvement.
 
A

Animal

Oil pipe leak

Hi All
Have same problem on my Beneteau.The pipe is no. 11 on the attachment. The problem is that it is a mild steel pipe coated in copper. It runs directly beneath the water pump which is probably dripping a small amount of salt water from the bearing check hole onto the support clip which is very nicely scratching off the copper protection.
My advise is to get a machine shop to replace the pipe with real copper using the original banjo ends and remove the support clip.Then cover the pipe with silicone tubing to protect it.This can be held in place by small cable ties .Slit the tube and it can be removed for inspection. Remember to place the slit to the bottom.
Great little engine
Iain S.E. Ireland
 
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