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Old 06-12-2018, 03:15 PM
skibums skibums is offline
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Can I run prop out of water with fake a lake?

Hello,

Question is, can I run my propeller out of the water with a fake a lake so I can heat up the transmission fluid to make it easier to pump out?
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Old 06-12-2018, 03:31 PM
CrashCourse316 CrashCourse316 is offline
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A: I have never ever done this <_< | >_>
B: If I were to do this i would keep in mind that its a prop out of water and is extremely dangerous, I would lock all access to the boat area and visually clear the area of all living and dead objects that move.
C: you NEED to lubricate the prop shaft (motorcycle chain lube i've heard used, constant water spray, blah blah blah), if you put it in gear at all without some sort of lubrication it will ruin the bushings as would anything else that normally spins against a non moving object. Not sure how fast it would ruin them without lubricant, I haven't ruined any bushings before...
D: there will be no load on the prop and engine which means don't rev it up too much, you can get away with a bit of reving up without being in gear but if your in gear I would keep it at idle.
E: Is it really necessary? Can you just pump the stuff out without being warm? are you just being lazy and risking your bushings and other possible accidents to make the pump job slightly easier?

EDIT: what MC25 said below....
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Old 06-12-2018, 03:33 PM
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MC25 MC25 is online now
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No. The shaft seal is cooled by the lake
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Old 06-12-2018, 05:10 PM
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Maristar210 Maristar210 is offline
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I say yeah go for it. Make sure the dog is outside running around while you are at it.
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Old 06-12-2018, 05:41 PM
jgraham37128 jgraham37128 is offline
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No there's no pressure being applied to the prop. Bad idea.
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Old 06-12-2018, 06:18 PM
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JimN JimN is offline
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Quote:
Originally Posted by skibums View Post
Hello,

Question is, can I run my propeller out of the water with a fake a lake so I can heat up the transmission fluid to make it easier to pump out?
I wouldn't- it's less a matter of the prop not having a load as heating the cutlass bearing and packing. How are you planning to remove the oil, gravity? That and draining the engine oil by gravity is a collossal waste of time.
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Old 06-12-2018, 06:40 PM
Mastar Mastar is offline
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I've used an 200w electric block heater to heat up the engine oil before. It's magnetic and sticks to the oil pan. I've also sucked it out cold just takes a while longer.
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Old 06-13-2018, 11:52 AM
Roman Roman is offline
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Yes you can if you

1) keep constant water to lubricate and cool where the shaft goes through the boat (you will need a nice constant fairly high pressure water flow. Think jet setting on your hose handle)

2) keep constant water to lubricate and cool where the shaft goes through the strut

3) don't kill yourself on the spinning prop

4) don't rev to fast as you have no load on the prop
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Old 06-13-2018, 12:23 PM
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can you? Sure you CAN. Should you? No.
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Old 06-13-2018, 12:32 PM
jharmon203 jharmon203 is online now
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Not a good idea at all. The transmission cooler feeds off the same water as raw water pump. It will probably not get enough water just from a hose from the house. Plus the shaft fully immersed in water.


For changing the transmission fluid, just change it in the water after putting the boat under load. I know it's not as convenient as the driveway, but then you dont run the risk of damaging anything from not having lubrication. You can heat up the engine in the driveway just fine, just not the transmission.
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