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Old 09-22-2019, 03:14 PM   #1
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Default 2400SCR 5.7L Alpha 1 Water Pump/Pulley Replacement

Yesterday boating our pulley assembly for the raw water circulator pump failed. The drive shaft was wobbling, making metal sounds and spitting water from underneath the pulley into the engine bay. We were able to limp home thankfully.

I am going to try and tackle replacing the whole thing, shaft and pump. I am somewhat mechanically inclined but a bit nervous. Heading to West Marine to get the parts. Few questions:

-Will I need a pulley puller?
-Is there anything else I should ask the parts desk for aside from the pump kit?
-Is this a job I can do (again, not super handy but good enough to turn wrench and at least take things apart)

Any suggestions or tips would be appreciated! Thanks all!

-Matt
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Old 09-22-2019, 03:55 PM   #2
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No puller needed, just unbolt it and install new gaskets and pump.
I would also change thermostat, belt, and hoses.
Good luck.
Don
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Old 09-22-2019, 03:59 PM   #3
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Yep, what Don said.
You will remove the entire pump, not just the pulley.
Recommend that you download Manual #24 from Documents section. See page 6A-19. You'll need some RTV sealant, or Perfect Seal, whichever you prefer, and a torque wrench.
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Old 09-22-2019, 04:38 PM   #4
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Thank you. Very helpful! When at West Marine do I buy the entire pump kit or just the pump itself?
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Old 09-22-2019, 05:01 PM   #5
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To make sure you get the correct parts, try going to marine engine dot com and enter your engine serial number. The site will take you to an IPB that has the water circulating pump for your specific engine. You will likely need some gaskets, but you can transfer the pulley wheel from your old pump.
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Old 09-22-2019, 05:17 PM   #6
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Excellent, saved my day guys. Really appreciate it!
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Old 09-22-2019, 05:39 PM   #7
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The circulating pump is a marine version of a auto water pump. As said no puller required just remove the 4 bolts then unbolt the pump. Reverse to install.
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Old 09-23-2019, 01:31 AM   #8
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Did you get the new pump installed?
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Old 09-23-2019, 03:49 PM   #9
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Yes new pump installed and was easy thanks to all your help. Couple bolts to remove, part came with the two gaskets, temperature gauge stable, no leaking. All is well (for now lol)
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Old 09-23-2019, 04:01 PM   #10
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Quote:
Originally Posted by daltonskier View Post
Yes new pump installed and was easy thanks to all your help. Couple bolts to remove, part came with the two gaskets, temperature gauge stable, no leaking. All is well (for now lol)
That's great, enjoy the remainder of the season.
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Old 09-24-2019, 12:23 AM   #11
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What Mike said.
Don
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