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Go Back   SailNet Community > On Board > Gear & Maintenance > Raw water pump
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Thread: Raw water pump Reply to Thread
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Topic Review (Newest First)
04-26-2007 10:03 AM
cardiacpaul Don't sweat it, we all do the "damn, what was i thinkin' dance" every once in awhile. It keeps our God complex in check.
04-26-2007 07:22 AM
sailingdog Bestfriend-

Did you install the impeller backwards too???
04-26-2007 01:21 AM
bestfriend Funny you should say that pigs. What gave me the idea that I was wrong about direction was that I lubed the impeller with dish soap. I noticed that I got bubbles in the strainer, BEHIND the pump. Duh, the water is going the wrong way.
04-26-2007 01:18 AM
pigslo I swab the impellor with mineral oil to aidin priming.
pigslo
04-26-2007 01:14 AM
sailingdog LOL... in the computer support field, we would call that a "loose nut at the keyboard error".
04-26-2007 01:05 AM
bestfriend
Ouch, my pride

At the risk of loosing what little respect I may have here. The freakin' hoses were on backwards! I could have sworn I had the direction right. Switched the hoses because nothing else worked and what do ya know, water out the exhaust. Next thing that comes apart gets its picture taken first. Yeah, I know, what an idiot. To my defense, it has been fifteen years since I have worked on a motor. (like thats gonna stop ya from hammering me). But hey! I am going sailing and I won't hear you when you're shouting from the shore. Later!
04-14-2007 04:35 PM
Faster I had an incident some years back where the connection between an intermediate shaft and the gear drive for the oil pump and RW pump failed internally - no output to these pumps - no pressure/no flow.

Good plan to check that visually.

Hopefully your problem will end up being easier to fix than that....
04-14-2007 02:04 PM
bestfriend A few good ideas from the CSOA site. Check for an air leak. Make sure I have a seal on the brass strainer and hoses, pre-pump. Shut off the intake and disconnect hose pre-pump, then blow into hose, to find leak. Raining today, Tee-ball tomorrow, so I will check more on Monday before the mechanic shows up.
Also, take off pump cover and have someone crank the engine a little to check that the impeller has not come loose from the spine and is not spinning even though the shaft still is. (make sense?) And cranking with the cover off will give me 100% assurance of the direction and hose placement.
04-13-2007 01:21 AM
CapnHand
Quote:
Originally Posted by bestfriend
And do you know how I know that I get water all the way to the pump? I pulled the hose there and SUCKED it up. That was fun. Bleech!
Some of us talk about loving our boats but..... man, you go ALL the way. That's TRUE love.
04-13-2007 12:52 AM
Valiente
Quote:
Originally Posted by Faster
Airlocking may occur if there are unvented high spots in the plumbing above water level.
If there IS a vent in that loop and it is of the "siphon break" type with a spring-loaded plunger on a vent at the top of the loop or the grey Vetus type, make sure that plunger isn't stuck and/or the vent hole isn't plugged with something nasty. It's a long shot, but I have waaay too much experience with this particular issue...
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