I have a W52 Westerbeke
and I consistently get an oil leak
where the sea water
pump mounts to the engine
The scenario is as such...
the Sea water
pump mounts to the timing cover via an aluminum
First the sea water pump with 4 bolts which holds the sea water pump to the backing plate. There is a gasket
which is supposed to seal this connection between the backing plate and the aluminum
backing plate. (this gasket
is typically the one that leaks).
Then the backing plate has 2 - 5/16 holes in it which are used mount to studs sticking out of the timing cover. This part seems to work, oddly enough. There are just 2 nuts which hold this large mass to the timing cover and a gasket in between the backing plate and the timing cover.
The 2 nuts are recessed into the 1/2 aluminum backing plate so the nuts are flush and a bit recessed into the backing plate once the nuts are secure. They also have 2 locking washers.
In the center of all of this is a larger hole which is used to pass through the connection which turns the water pump and connects to the fuel injector pump
which in turn is turned by a gear
(if i remember correctly).
So..yes, there should be oil
reaching the gaskets because of the hole where the connection that turns the pump.
I have tried to fix it 3 or 4 times and I just had a diesel mechanic
try to fix it. He checked to be sure everything was flat and square. He said one of the nuts were a bit loose, which probably contributed to the leak. This was probably my fault. Other than that nothing was odd.
So I imagine the leak with do as it did before...after a 100 or 200 hours it will slowly start to leak and then at 300 to 400 hours I'll change the gaskets and continue on.
Anyone have this issue?