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Hunter 41DS engine room blower replacement

MFD

.
Jun 23, 2016
56
Hunter 41DS Seattle
Hi All,
Finally (I was wondering when it would happen) the engine room blower does not work anymore. I noticed it has both a relay and the motor itself and have not ordered parts quite yet.

I dug around in the port lazarette, engine room, and what I call the 'potato locker' - the storage area under the cabin sole just in front of the fridge. At this point it appears that maybe I need to pull the refrigerator and probably will find the motor about halfway up towards the aft side?

I have the two-cabin model with the large single aft berth.

Before I break out the tools and start taking stuff apart to find the blower motor I am curious if anybody else has done this and might have any tips or tricks.

Thanks in advance!
 
Dec 15, 2019
40
Hunter 49 San Diego
We had a non-working blower when we bought our 49. Turned out to be the relay. Blower was fine and is still working. Ours was easy to reach. Not sure if the relay is accessible on your boat.
 
Aug 26, 2007
244
Hunter 41DS Ventura, California
Our blower has worked since we bought the boat in 2009 but we have never used it. What do you use it for?
 

MFD

.
Jun 23, 2016
56
Hunter 41DS Seattle
I don't use it much in the winter, but my understanding primary use case is ensuring a touch of cold air for the diesel to consume, plus alternator heat.
 
Apr 11, 2017
2
Marlow Hunter MH 40 Kemah
The blower can be accessed through the ‘floor’ of the aft cabin hanging locker on port side of vessel, or behind forward panel of same locker. Thought this was the most buried and oddest place I’ve ever seen for a bilge blower. I hope this helps.
 
Last edited:
Jul 12, 2011
971
Catalina 36 1771 Ft Pierce, Florida
I don't use it much in the winter, but my understanding primary use case is ensuring a touch of cold air for the diesel to consume, plus alternator heat.
Good luck finding it. I think those in-line blowers do not really move enough air to affect the heat inside the engine compartment. I know that there is very little engine cooling that occurs from the air around the engine - it's all cooling water. Keeping the alternator cool(er) is important, but I'll bet your inlet duct is at the bilge level, not the top of the engine so almost worthless for that. In short, (1) I would not hurry to replace the blower from a real-impact on longevity of equipment, and (2) relocate the inlet duct to right behind the alternator.
 
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Jul 26, 2021
1
Hunter 45DS Sanctuary Cove
We had a non-working blower when we bought our 49. Turned out to be the relay. Blower was fine and is still working. Ours was easy to reach. Not sure if the relay is accessible on your boat.
I am not sure that this will assist but I have a 2008 Hunter 45DS. The in line blower is under the aft master cabin bed (port side) and is easy to change once you find it. I used to run the blower at all times whilst motoring but I was advised by the marine electrician that it is not as cooling mechanism and should be run 3 to 4 minutes prior to starting to exhaust any diesel fumes from the engine compartment. I turn on the blower for 3-4 minutes, start the engine and then turn it off.
 
Dec 19, 2006
5,725
Hunter 36 Punta Gorda
Been running blower for years any time motoring and helps remove heat and smell from heat.
 

senang

.
Oct 21, 2009
195
hunter 38 Monaco
2005 Hunter 38. Blower (more suction) is under the aft owners cabin berth. The label on the 12V control panel states “Blower”. Situated halfway under the berth I have difficulty seeing the use of it for the engine bay.
To be usefull for the engine running conditions I would expect the blower intake to be in the top part of the engine room. In that position it evacuates the hottest air in the engine room. Where it is situated now on my boat it is only a marketing gimmick.
 
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