I could not get water to circulate through my OMC 120 HP with the muffs on it. So I decided the impeller needed to be replaced.
I removed the lower unit from my boat and disassembled.
Upon inspection of my water pump assembly, I found the impeller was severely damaged and the pump housing pitted and corroded. Which was to be expected. So all of the parts I purchased were needed after all.
It was no problem to remove the water pump cap, the impeller and the impeller plate.
After that is when the fun started. Upon trying to remove the the original water pump housing from the lower unit casting I found it was severely frozen. Years of exposure to water, heat and corrosion has taken it toll. (What a pain in the Arsh! )
I was able to get the pump to rotate a small amount however the aluminum housing also rotated with it. (Definitely frozen) Despite penetrating fluid and several attempts... not much luck. I cannot get too rough with it in fear of breaking the casting which would require a new upper housing. Ugggggh!
I have loosened many a stuck items in my day and have rarely lost a battle. However, this one is trying my patience. I have not given up yet though.
No possibility to heat is up so I am having a flat plate made to use as a puller. This will allow me to screw three bolts into the threaded holes in the pump housing and pull with even pressure. I hope this will do the trick.
If anyone has advice... now is the time to provide it.
Anyone know any tricks for removing a stuck pump housing?
Please provide your comments. Thanks a million.
I removed the lower unit from my boat and disassembled.
Upon inspection of my water pump assembly, I found the impeller was severely damaged and the pump housing pitted and corroded. Which was to be expected. So all of the parts I purchased were needed after all.
It was no problem to remove the water pump cap, the impeller and the impeller plate.
After that is when the fun started. Upon trying to remove the the original water pump housing from the lower unit casting I found it was severely frozen. Years of exposure to water, heat and corrosion has taken it toll. (What a pain in the Arsh! )
I was able to get the pump to rotate a small amount however the aluminum housing also rotated with it. (Definitely frozen) Despite penetrating fluid and several attempts... not much luck. I cannot get too rough with it in fear of breaking the casting which would require a new upper housing. Ugggggh!
I have loosened many a stuck items in my day and have rarely lost a battle. However, this one is trying my patience. I have not given up yet though.
No possibility to heat is up so I am having a flat plate made to use as a puller. This will allow me to screw three bolts into the threaded holes in the pump housing and pull with even pressure. I hope this will do the trick.
If anyone has advice... now is the time to provide it.
Anyone know any tricks for removing a stuck pump housing?
Please provide your comments. Thanks a million.