Replacing Impeller - Just the impeller or entire assembly?

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09-28-2016 | 08:51 AM

#31

Tractionless

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Joined: Jul 2015

Posts: 1,202

Likes: 89

From: Atlantic Southeast

Quote:

Originally Posted by flatlanderbill

Yes , one seal keeps the water on the water pump side and the other keeps the gear lube on the fuel pump side. They are installed opposite each other, pay attention to the way they face when you press the cam / impellor shaft out. Bam has a good exploded view on their website if you don't have the factory service manual. Bam also sells the manuals, best $ you will ever spend on your boat!

Thank you, I have 2 manuals. One onboard paper and one on DVD. Maintenance requirements all highlighted.

Ok, so the seal only separates water from fuel/oil and there's no fail safe to keep fuel out of the oil? Just have to keep changing it and pray for the bearing?

I just installed Hardin SS housings (OE looked to be original at 20 yrs./235 hrs) but I'll be replacing the impeller once/yr.

09-28-2016 | 11:23 AM

#32

BUP

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Joined: Jul 2011

Posts: 9,594

Likes: 46

From: Ft. Worth TX

there is a Mercruiser Manual all by itself that goes into very detail for the full disassembly and reassembly plus all the rebuild part numbers to perform the task 100 percent completely.