News:

New Board:  Forum Support (Below Chandlery). Forum Support to submit any questions.

Main Menu

Raw Water Pump Rotation

Started by barrylab, June 21, 2010, 10:40:40 AM

Previous topic - Next topic

barrylab

I'm in the process of replacing hose, and have lost my way. Without connecting up the batteries (which aren't on the boat right now), I don't know which way the raw water pump rotates.
This is, of course, critical information for putting the impeller in correctly, but also for routing the new hose.
If anyone has a schematic of the raw and fresh water cooling on a W40, it would be helpful, but I can probably figure it out if I can just determine which side of the raw water pump is the inlet.
"Relentless"
Pearson 365 Ketch modified as Cutter
1976 Hull #65
Weymouth, MA

SailingSeaDragon

Sea Dragon
1981 36 Cutter (367)
http://www.sailingseadragon.com

barrylab

That helps with the order of connections in the raw water cooling, thanks. I still need to determine the rotation direction of the raw water pump.

To be clear, when I'm in the locker looking at the "front" of the pump, does the impeller turn clockwise (causing the water to enter from the right and exit to the left) or counter clockwise (causing the sea water to enter from the left and exit to the right)?

Alternatively, should the impeller blades be bent to the left or the right at the top of the pump cavity?
"Relentless"
Pearson 365 Ketch modified as Cutter
1976 Hull #65
Weymouth, MA

S/V Deo Volente

I think the W-40 rotates clockwise as viewed from the front of the engine. You could "bump" the starter to verify.
"S/V Deo Volente"
Pearson 365 Pilothouse
Hull #17 1980
Duluth Minnesota
Bob