Impeller change- puller needed??

docofthebay

docofthebay

New Member
Sep 10, 2009
461
Fort Morgan, Mobile Bay Alabama
Boat Info
1985 390 EC
Engines
twin 3208TA Cats
Twin disc transmissions
Within the next week or two I am going to do my first impeller change on these diesel engines. I've done many changes on other smaller engines before so I understand the process, my question is do I need a specific puller tool to get the old one out, or can it be pulled out with pliers etc like the smaller ones?
 
I bought a bolt from cat (sure you could get it cheaper elsewhere) It's a breeze with this bolt, pita without it
 
This one is hard to answer because the 3208's could have one of 5 different seawater pumps on them. The most common way to remove the impeller is with a 2" long 3/4X16 bolt..........the cover is removed, the bilt is inserted in the end of the impeller and is tightened. It contacts the end of the pump shaft and jacks the impeller out of the housing. Remove the key, clean the pump cover, install the new impeller (use soap or silicone for lube) with key and push it into place, then put the new o-ring gasket on the cover and reinstall it. It is about a 10 minute job, if there are no worn parts, no broken impeller blades (in which case you have to back-flush the system to recover any impeller parts in the cooling system) no leaks, and if you can get to it.
 
Alex is right on I bought the bolt from home depo. Had less bells and whistles. I hope you can use the bolt makes it simple
 
You must log in or register to reply here.

Forum statistics

Threads
113,143
Messages
1,427,150
Members
61,056
Latest member
Rafael Saraiva
Back
Top