Water running from under Westerbeke

[stwagstaff]

I'm just posting an update, for anyone who needs replacement oil hoses for the 4-107 engine in the future. I've been to a couple of hydraulic shops to get these hoses fabbed. Neither had the right fitting. The oil cooler end is a standard 3/8, pipe thread rigid fitting.

The oil filter end, where it goes into the oil filter adapter (with a swivel fitting) is a "#8, inverted-flare male, IMPERIAL thread," i.e., British threads. This fitting is hard to find, at least in San Jose, California. I'm heading to a shop named "Royal Brass" today to try to source it.

[S/V Deo Volente]

I had that problem too, but the shop was able to reuse my fittings when I asked them, but I had to ask. That was 12 years ago.

[RayNWanda]

If you remove the Brit fittings, I think you will find pipe threads behind them. They can build hoses with a swivel fitting on one end or both. The swivel fittings cost a bit more, but may make them easier to install. You will have to have a swivel fitting on at least one end.

[stwagstaff]

Well, I went to the Royal Brass shop, near where I work. It is a Parker hydraulics shop, and has the full line of Parker fittings. Owner had the the Imperial, inverted flare fitting, but had no ability to source it in brass. The original fitting is brass , with the Imperial threaded inverted flare nut made of steel. Both fittings on my hoses were crimped on and not re-usable. He rebuilt the hoses using steel fittings (stainless was $110 for each fitting!!!). I know the steel will rust eventually.

I'm thinking of painting them, though I'm not sure if it's worth it, as I can't paint the swivel parts. The steel has a thin gold-colored plating, but it's very uneven, and is already rubbed off from the crimping process. I can't imagine it will do much to prevent corrosion. I expect I have to sand blast these to get paint to stick which will remove all of the plating, such as it is. I guess my other option is to prime them. But I can't expect to get any kind of coat on the flare tube, under the swivel nut, where it's most likely to corrode and be a problem.

I'm planning to use "NeverSeize" on the swivel fitting and threads. Not sure how long I can expect these hoses to last, but at least the total bill for the pair was only $70, instead of $140 plus shipping for "factory" hoses.


I'll post some pictures here, as soon as I can get them off my camera:

https://plus.google.com/photos/115627829333862295694/albums/5808567213229975953?authkey=CIuokq7VnY3YqwE

[Sailing_Photog]

As of August 2017 the Westerbeke 40 oil cooler hoses #19150 and #19151 are back-ordered by months. 

This thread helped me find a local shop to make some new hoses with the british inverted flare fitting on one end, since I knew what to ask for when calling around.  Moreland Hose in Oakdale, New York (on Long Island) made me a set in a few minutes.  They even made it with Coast Guard approved fittings and hose.  Thanks stwagstaff!!!

But the reason I'm posting is to warn anyone taking off their oil cooler that the swivel fitting is on the oil filter end of the hoses and WILL NOT SWIVEL until you loosen the smaller nut of the fitting.  I destroyed a hose before I figured this out, making new ones necessary.  Maybe I'm stupid but it wasn't obvious. Don't turn the 7/8" fittings on the hoses until you loosen the swivel, which on mine took a 19mm wrench.

By the way, Lenco Coolers in Long Island can make your oil cooler and heat exchanger for you in a very short time.