Pearson Boats - Common Systems > Engine and Drive Train
MD11 Fresh Water Pump Repair
rsfischbeck:
Hey everyone-just wanted to pass on that if your water pump goes out..no replacements on the planet.....here is a guy who can rebuild, had it rebuilt in September 2017, still going strong! $700
The Flying Dutchman Waterpumps
Wade Jenezon
200 Davis Creek Rd
Selma Oregon 97538
541 450 2277
tsunami74000@hotmail.com
fdrbp.com
Rusty Pelican:
The pump you are looking for is available.
They changed the configuration of the inlet and the outlet such that is not a direct fit to the existing plumbing setup.
They do supply a work-a-round to fit the MD-11C
I bought two of them last season
Here is the pump site and the pump
https://www.pumpvendor.com/Johnson_10-35157_series.html
The pump is threaded, they sell a threaded to hose adapter.
I have the part #"s on the boat, it may take a month to get to my boat.
rsfischbeck:
Thank you for the reply..... the pump I am speaking about is for the water pump that is for the heat exchanger..... this pump is spun by the belt That goes around the fly wheel and the alternator.
brianm:
Hi all,
A "noobie" question (chasing a 323, but don't have the boat yet). What is this pump doing? I thought the MD11C was raw water cooled. This post has me confused. I can't check against a real boat so please help clear up my confusion.
Thanks in advance.
admin:
Quote from Volvo:
--- Quote ---COOLING SYSTEM
The engine is cooled by sea water. The cooling system has a sea water pump and a
water distribution housing with a thermostat,
The sea water pump has an impeller made of neoprene rubber, which is driven via a
rubber flange from the camshaft.
The thermostat in the water distribution housing regulates the water flow, so that
water is always flowing in the exhaust manifold and out in the exhaust elbow,
regardless of whether the engine is cold or hot.
--- End quote ---
The larger pump is referred to as the "Circulation Pump" and the smaller pump seems to be referred to by many names: seawater, raw water, or impeller pump. Attached is an image of the MD11C from Volvo Online, where I have highlighted what I believe to be the fresh water "Circulation Pump" on the front of the engine in yellow, and the "Seawater Pump" on the rear of the engine in blue.
Volvo MD11C Fresh Water Cooling System
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