So, It has happend again, now with the second water pump I have.
Two weekends ago, after I had just finished up doing a fuel filter change, and restarted the motor, i noticed I had no water flowing out my exhaust. I stopped the engine and spent 10 minutes swapping it out for my spare water pump. This solved the cooling issue, but left me with a pump to overhaul. When I took it apart, I noticed two issues, both requiring new parts.
- Impeller (only about 6 months old) lost a fin, and the fin had jammed itself into the water outlet.
- Jammed impeller somehow managed to strip the keyway cuts in my pump pulley, allowing it to spin under load.
So I picked up a new impeller locally, and ordered the pulley from Toads. Got it put back together and it is now in the spares box.
This is the second pulley that I have had to replace for this very reason, so now both of my pumps have brand new ones. Have any of you had similar issues with the pulleys?
How long do your impellers last?
When my pulley hole rounded, for emergency repair I fit a star washer. It works.
Suggest you put a star washer in so that it bites into the pulley for added security.
After rereading this thread, I think I will go and get two star washer as you suggest