Water Pump Impellor
 

Does anyone have any tips or tricks when changing the water pump impeller on a 500 EFI mercury racing engine. Also does anyone have the mercury service page that shows how to change it. I would love to know the correct torque for the bolts when I put it back on.

Re: Water Pump Impellor
 

here you go,when reassembling I use grease grease instead of soap, it helps on dry start

Re: Water Pump Impellor
 

I've used a zip-tie around the impeller to keep the arms bent until it gets in the housing, then cut the tie and push it the rest of the way in.

Re: Water Pump Impellor
 

I was always told that using grease would be bad for the rubber impeller? And soap would be the best thing. What gives? Is there a water base grease that is used? Under no way should they be started dry.

Re: Water Pump Impellor
 

I use merc 2-4-c with teflon never any problems

Re: Water Pump Impellor
 

What about KY Jelly? Thats water based. Would that be enough lube for start up. And thanks for the stat page!

Mike

Re: Water Pump Impellor
 

use 24C that what most techs use...and yes merc says to use soap and water because its biodegradable (they used to say 24c till the greenpeacers got involved)


Wouldnt want you to use all the wifes K-Y :eek:

Re: Water Pump Impellor
 

My wife thanks you.

Re: Water Pump Impellor
 

:D
http://www.offshoreonly.com/forums/s...d.php?t=108106
:drink:

Re: Water Pump Impellor
 

GREAT JOB WALLY

Well documented :evilb: :evilb: :evilb:

Re: Water Pump Impellor
 

I used good old Vasaline and it worked great.

Re: Water Pump Impellor
 

The last time I changed mine I had a container of anti seize within in reach so I coated the inside of the housing with it. So far so good!

Re: Water Pump Impellor
 

Don't worry about the direction of the vanes to get the impellor installed. Hard enough fighten them buggers w/o trying to get them all going in 1 direction. After you get it in there, just turn the pulley by hand and they will all flip in the correct direction.

Re: Water Pump Impellor
 

Wally great job!!! Exactly the help I was needing and looking for.