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.

http://i145.photobucket.com/albums/r...r/101_0102.jpg

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.

http://i145.photobucket.com/albums/r...r/101_0107.jpg

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.


http://i145.photobucket.com/albums/r...r/101_0111.jpg


http://i145.photobucket.com/albums/r...r/101_0109.jpg

Putting the motor in forward gear was the trick, it all went back together real smooth.

http://i145.photobucket.com/albums/r...r/101_0112.jpg

http://i145.photobucket.com/albums/r...r/101_0113.jpg

And the results?

I don't know, it got time for church so I will have to test it out in the morning.

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.

http://i145.photobucket.com/albums/r...r/101_0102.jpg

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.

http://i145.photobucket.com/albums/r...r/101_0107.jpg

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.


http://i145.photobucket.com/albums/r...r/101_0111.jpg


http://i145.photobucket.com/albums/r...r/101_0109.jpg

Putting the motor in forward gear was the trick, it all went back together real smooth.

http://i145.photobucket.com/albums/r...r/101_0112.jpg

http://i145.photobucket.com/albums/r...r/101_0113.jpg

And the results?

I don't know, it got time for church so I will have to test it out in the morning.

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.

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.

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. ;)

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. ;)

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.

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.

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.

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.