Engine oil drain hose adapter

Ward H · Feb 27, 2023

Looks familiar. I replaced the drain hose on my my C30 last spring when I raised the engine for a new tranny and motor mounts. The kit cost cost $142 from Hansen Marine Engineering.
Looking at the diagram posted, it doesn't look like pulling oil from the dipstick tube will get to the bottom of the pan. You'll also have a smaller ID hose to pull the oil thru.
That's the reason why I replaced mine when I found it leaking after I raised the engine. Wasn't sure if I damaged the hose or just loosened it in the process but decided that changing it while the engine was up in the air was the easiest way to go.

Hayden Watson · Feb 27, 2023

You can buy it as a Univer$al part...
Or if the hose is leaking, you can go to a bearing and hose shop and have them replace the hose. The other thing that might be leaking is on of the crush washers. They can be replaced at most any autoparts store. If the fitting is cracked, it is called a "banjo fitting" and the hose and bearing shop would also have them.
I would bet on the hose getting a leak.

Ralph Johnstone · Feb 27, 2023

I wouldn't be too quick on replacing the banjo fitting (part #15). It certainly looks to be solid enough. Or maybe just the hose has failed ?

The mfg. drawing shows two washers (parts #23) at $22.30 ea.

! Your photo shows only one gasket on the bottom joint and maybe no gasket on the upper joint. Remember, the photo is upside down. The one gasket showing is definitely not the $22.30 trophy gasket (#23) but still looks like a healthy substitute.

I got two nickels, a dime and a ball of pocket lint that says that's where your problem is. It's held up for years and finally got shaken loose. You need to insert a 5¢ nylon gasket from a hardware store in that upper joint. During cold weather, it helps to heat the banjo assembly with a hair dryer when tightening. With a heat gun, be realllllllllllllly careful.

When you're working on that assembly, whether tightening or loosening, always hold the upper most nut as a backup. Maybe there should be a gasket up there as well.

Ralph Johnstone · Feb 27, 2023

jonelli said:
they recommended teflon on the main bolt that goes into the pan.

The bolt is hollow and it has a side hole. Cover that hole in the main bolt with teflon tape and OOPS, it's back to the drawing board. The reason I say cheap 5¢ nylon washer is that Yanmar recently got smart and replaced one of the crush washers on the top of the engine mounted fuel filter with a nylon washer. It's often used to vent air so the nylon washer is reusable. Part#8 is the nylon washer :

I still paid about $4.00 for it from the Yanmar dealer. Big box stores sell them for about 5¢ (or they should).

Richard19068 · Feb 27, 2023

Ralph Johnstone said:
Big box stores sell them for about 5¢ (or they should).

Canadian?

Ward H · Feb 27, 2023

Ralph Johnstone said:
The mfg. drawing shows two washers (parts #23) at $22.30 ea. ! Your photo shows only one gasket on the bottom joint and maybe no gasket on the upper joint. Remember, the photo is upside down. The one gasket showing is definitely not the $22.30 trophy gasket (#23) but still looks like a healthy substitute.

Ralph, I think you might be reading the wrong line for the price of #23. That is for #22 which is an O ring. Not sure where that goes.
#23 doesn't doesn't show a price, probably because they are included in kit 15b.
Kit 15B includes the parts bracketed in the diagram as 15 as well as 19 and 20. I think 21 was also included and I didn't use it but I have no idea where it is now.

@jonelli
If you've got very small hands with nimble fingers you might be able to change it to the plug only without lifting the engine.

If the drain hose and associated parts were easily accessible I'd have tried changing just the gaskets, then the hose, etc.until it stopped leaking. Since I wanted to retain the sump hose feature and there was no way I could get my fat fingers in there to put it back together with the engine in place, I went with the kit while I had the room to work on it.

Ward H · Feb 27, 2023

Sounds like a good plan to me!

Ralph Johnstone · Feb 27, 2023

Ward H said:
#23 doesn't doesn't show a price, probably because they are included in kit 15b.

You are so right. If I were ordering parts for this oil sump, it would look something like this when finished :

It would be spectacular, but may not fit the intended purpose.

Ralph Johnstone · Feb 27, 2023

Richard19068 said:
Canadian?

If it were 5¢ Canadian, they would give them away free.

Ward H · Mar 5, 2023

jonelli said:
The washers I used cost $0.61 each.

Nice! How was the access to change the washers? Just reached right in with a wrench? I can barely get my hand on the drain, let alone work a wrench.

Hayden Watson · Mar 7, 2023

jonelli said:
Not exactly that easy. Open end wrenches fit, couldn't get a full socket ratchet in there, the keel bolt was in the way.
But, there was enough room. Took the access door off, open the bilge, go through the bilge to reach in there.

When I replaced my motor mounts, I used the two picking eyes on the top of the engine to lift the engine enough to replace the mounts (about 2"). Would that have made the process of replacing the banjo washers easier?

I lifted the engine with a come-a-long up to a 4x4 across the companionway opening.