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09-22-2019, 04:14 PM
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#1
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Ensign
Join Date: Aug 2018
Location: CT
Posts: 5
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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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09-22-2019, 04:55 PM
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#2
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Captain
Join Date: Jun 2016
Location: Mn.
Posts: 664
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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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__________________
1995 Maxum 2400 SCR 5.7 A1 G2 LUNA DE MIEL SOLD
1988 Bayliner 2455 5.0 IO (sold)
1987 Seaswerl 18ft C. Cabin 4.3 IO(lost in fire)
2012 South Bay Pontoon
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09-22-2019, 04:59 PM
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#3
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Captain
Join Date: Oct 2011
Location: Chesapeake, VA
Posts: 556
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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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09-22-2019, 05:38 PM
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#4
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Ensign
Join Date: Aug 2018
Location: CT
Posts: 5
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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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09-22-2019, 06:01 PM
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#5
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Captain
Join Date: Oct 2011
Location: Chesapeake, VA
Posts: 556
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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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09-22-2019, 06:17 PM
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#6
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Ensign
Join Date: Aug 2018
Location: CT
Posts: 5
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Excellent, saved my day guys. Really appreciate it!
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09-22-2019, 06:39 PM
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#7
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Admiral
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 10,623
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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.
__________________
1997 Silverton 362, 7.4 Crusaders
1997 2400 SCR, 5.7 Vortec / Bravo 2
Mike
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09-23-2019, 02:31 AM
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#8
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Admiral
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 10,623
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Did you get the new pump installed?
__________________
1997 Silverton 362, 7.4 Crusaders
1997 2400 SCR, 5.7 Vortec / Bravo 2
Mike
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09-23-2019, 04:49 PM
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#9
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Ensign
Join Date: Aug 2018
Location: CT
Posts: 5
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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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09-23-2019, 05:01 PM
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#10
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Admiral
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 10,623
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Quote:
Originally Posted by daltonskier
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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That's great, enjoy the remainder of the season.
__________________
1997 Silverton 362, 7.4 Crusaders
1997 2400 SCR, 5.7 Vortec / Bravo 2
Mike
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09-24-2019, 01:23 AM
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#11
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Captain
Join Date: Jun 2016
Location: Mn.
Posts: 664
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What Mike said.
Don
__________________
__________________
1995 Maxum 2400 SCR 5.7 A1 G2 LUNA DE MIEL SOLD
1988 Bayliner 2455 5.0 IO (sold)
1987 Seaswerl 18ft C. Cabin 4.3 IO(lost in fire)
2012 South Bay Pontoon
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