Joel_MD
Member
I'm the kind of guy who likes to replace stuff before it fails. My Cummins engines have the common Sherwood P1730 (don't know if they're -A or -C suffix) seawater pump. I just bought the boat this year and have no idea if the current pumps are original or have ever been rebuilt. The engines have about 900 hours on them.
My idea is to buy two new P1730C pumps early next year to keep as spares, and next year when winterizing instead of replacing just the impellers I'll replace the pumps. Then I would like to buy major rebuild kits and rebuild both pumps at my leisure. Has anybody attempted a DIY rebuild of this pump? It looks like the hardest part is using a puller to remove the gear from the shaft. However, since the price of the major rebuild kit is about 75% of the cost of a new pump, maybe I should just keep the old pumps as spares to use in an emergency without rebuilding them, since the new pumps should last several years at least.
My idea is to buy two new P1730C pumps early next year to keep as spares, and next year when winterizing instead of replacing just the impellers I'll replace the pumps. Then I would like to buy major rebuild kits and rebuild both pumps at my leisure. Has anybody attempted a DIY rebuild of this pump? It looks like the hardest part is using a puller to remove the gear from the shaft. However, since the price of the major rebuild kit is about 75% of the cost of a new pump, maybe I should just keep the old pumps as spares to use in an emergency without rebuilding them, since the new pumps should last several years at least.