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#1
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Water Pump Replacement '99 Merc 150
Well boys, I got a late start because of rain and it rained on me for a few minutes while working, but it is done.
The key to this job was having a good helper.  That plus being able to phone friends while I was in the yard rasslin that sucker. *(Thanks Lord Skools) *Another mechanic friend helped me by pulling up diagrams on the computer while I was at the motor. Once I found all the bolts holding on the gearcase (there are 7 in a Merc 150) it slid right off.  The good news was that the old waterpump looked fine.....that is also the bad news, I was hoping it was crap and I would solve my overheat problem. *There were plenty of signs that the motor had sucked up sand.   Putting the motor in forward gear was the trick, it all went back together real smooth.   And the results? I don't know, it got time for church so I will have to test it out in the morning.
__________________
*************************************** Stay Safe!  Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke. 1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke. 
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#2
02-22-2007, 12:53 AM
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Water Pump Replacement '99 Merc 150
Well boys, I got a late start because of rain and it rained on me for a few minutes while working, but it is done.
The key to this job was having a good helper. That plus being able to phone friends while I was in the yard rasslin that sucker. *(Thanks Lord Skools) *Another mechanic friend helped me by pulling up diagrams on the computer while I was at the motor. Once I found all the bolts holding on the gearcase (there are 7 in a Merc 150) it slid right off. The good news was that the old waterpump looked fine.....that is also the bad news, I was hoping it was crap and I would solve my overheat problem. *There were plenty of signs that the motor had sucked up sand. Putting the motor in forward gear was the trick, it all went back together real smooth. And the results? I don't know, it got time for church so I will have to test it out in the morning.
__________________
*************************************** Stay Safe! Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke. 1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke.
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#3
02-22-2007, 01:12 AM
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Re: Water Pump Replacement '99 Merc 150
What did the old impellor look like when you removed it from the housing. Did the vanes pop out or stay laid over? The vanes have to spring out to work properly. The pumps don't really wear per say, they more or less lose there elasticity and quit pumping.
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2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR 2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD  AND THE PINK JEEP!!!! R.I.P. http://www.wellcraftv20.com/communit...ad.php?t=11664 
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#4
02-22-2007, 01:12 AM
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Re: Water Pump Replacement '99 Merc 150
What did the old impellor look like when you removed it from the housing. Did the vanes pop out or stay laid over? The vanes have to spring out to work properly. The pumps don't really wear per say, they more or less lose there elasticity and quit pumping.
__________________
2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR 2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD AND THE PINK JEEP!!!! R.I.P. http://www.wellcraftv20.com/communit...ad.php?t=11664
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#5
02-22-2007, 01:17 AM
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Re: Water Pump Replacement '99 Merc 150
Randleman, Great work. Good job on talking him through SKOOL. Hope that fixed the problem. Keep us posted. Wishing for the best for ya Brother. ;)
__________________
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#6
02-22-2007, 01:17 AM
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Re: Water Pump Replacement '99 Merc 150
Randleman, Great work. Good job on talking him through SKOOL. Hope that fixed the problem. Keep us posted. Wishing for the best for ya Brother. ;)
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#7
02-22-2007, 01:18 AM
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Re: Water Pump Replacement '99 Merc 150
The vanes on the old one popped out straight and were pliable, but who knows, maybe it needed replacing.
__________________
*************************************** Stay Safe! Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke. 1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke.
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#8
02-22-2007, 01:18 AM
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Re: Water Pump Replacement '99 Merc 150
The vanes on the old one popped out straight and were pliable, but who knows, maybe it needed replacing.
__________________
*************************************** Stay Safe! Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke. 1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke.
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#9
02-22-2007, 01:23 PM
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Re: Water Pump Replacement '99 Merc 150
It worked!!!!! No overheat warning after 30 mins running on the hose.
See my post in "Calling all Merc Mechs" for more.
__________________
*************************************** Stay Safe! Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke. 1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke.
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#10
02-22-2007, 01:23 PM
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Re: Water Pump Replacement '99 Merc 150
It worked!!!!! No overheat warning after 30 mins running on the hose.
See my post in "Calling all Merc Mechs" for more.
__________________
*************************************** Stay Safe! Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke. 1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke.
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