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Old 27-06-2010, 11:07   #1
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Join Date: Sep 2008
Location: Aiea, HI
Boat: Catalina 320 - Resolute
Posts: 8
Westerbeke 30B Three Oil Sump Replacement

I recently acquired a 1996 Catalina 320 powered by a Westerbeke 30B Three. Yesterday, I determined that the oil sump needs to be replaced due to a rusty area just forward of where the sump drain hose connects to the sump. The rust has progressed such that I have a significant oil leak (many drops per minute).

I am trying to figure out if I can replace the sump without lifting the engine. The installation is such that if I can slide the sump forward immediately after removing the screws, I will be able to get it out. However, if the crankshaft, connecting rods, or other pieces extend into the sump such that I have to lower the sump before I can start sliding it forward, I will probably have a clearance problem between the engine block and the deck.

I have not been able to discern from looking at the engineering drawings on the Westerbeke website whether there are pieces that extend into the sump and how far they go down. Does anyone have experience with this or a similar repair? I would appreciate any helpful thoughts.

Many thanks,
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Old 28-06-2010, 10:08   #2
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Join Date: Sep 2008
Location: Aiea, HI
Boat: Catalina 320 - Resolute
Posts: 8
I attached a picture of the situation I am describing. I added the flashlight for perspective. It is about four inches long and is sitting on the deck that the pan needs to clear as it is removed. (2" of clearance) My gut feel is that it will probably come out without lifting the engine, but getting the three bolts on the back of the pan on an off might end up being the issue that forces me to lift the engine anyway (the other 15 bolts look accessible).
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