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200 Merc Water Pump Sealer Question #11706986 07/06/16 01:30 PM
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tdavis184 Offline OP
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When replacing the water pump housing, impeller, and associated gaskets from the repair kit...should you use any type sealer on the gaskets themselves? same question with new thermostats. Any sealer on the rubber grommet that surrounds the thermostat before insertion back into the head?
Thanks in advance for the help....

Re: 200 Merc Water Pump Sealer Question [Re: tdavis184] #11707178 07/06/16 02:55 PM
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bronco71 Online Content
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No, none on the gaskets or the thermostat seals. You should see where there was a wall of sealer blocking the exhaust from the water pump, this needs to be replaced when you put it back together by building a dam of sealer that will contact the upper when put together. I use high heat silicone type sealer on mine....


1987 Nitro MX185/Mercury Black Max 150
1999 Triton TX21/225 Mercury Optimax
Re: 200 Merc Water Pump Sealer Question [Re: tdavis184] #11707245 07/06/16 03:23 PM
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tdavis184 Offline OP
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Perfect reply!! Thank you Bronco. I thought I was on the right track with no sealer. And yes I built up the silicone on the divider plate. Thanks for your response..

Re: 200 Merc Water Pump Sealer Question [Re: tdavis184] #11709154 07/07/16 12:12 PM
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gary purdy Offline
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How are you keeping the water pump housing and plate gasket in place? You have to use some kind of adhesive.


The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
Re: 200 Merc Water Pump Sealer Question [Re: tdavis184] #11711542 07/08/16 12:23 PM
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sbump26 Offline
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What do you use Gary?


Put the plug in.
Re: 200 Merc Water Pump Sealer Question [Re: gary purdy] #11711632 07/08/16 01:17 PM
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TLW Offline
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Originally Posted By: gary purdy
How are you keeping the water pump housing and plate gasket in place? You have to use some kind of adhesive.


???

Re: 200 Merc Water Pump Sealer Question [Re: tdavis184] #11713359 07/09/16 01:06 PM
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gary purdy Offline
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GM gasket adhesive. Best stuff I have ever found.


The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
Re: 200 Merc Water Pump Sealer Question [Re: gary purdy] #11713459 07/09/16 02:33 PM
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TLW Offline
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Originally Posted By: gary purdy
How are you keeping the water pump housing and plate gasket in place?


confused a little here?.. sure ya thinkin' merc V6?.. might wanna revisit that... three studs plus two "tits" on tha base that keep everything in place... merc recommends a teflon lubricant only on tha drive shaft seals, o-ring and impeller....

Last edited by TLW; 07/09/16 02:42 PM.
Re: 200 Merc Water Pump Sealer Question [Re: tdavis184] #11713510 07/09/16 03:21 PM
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gary purdy Offline
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You evidently have never had the impeller catch the gasket during an impeller install, I have years ago and then you get to do it all again. Mercury also says to replace all of the gaskets and use a non-mineral base lubricant. Where does his post say a 2.4 or 2.5 Merc?


The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
Re: 200 Merc Water Pump Sealer Question [Re: tdavis184] #11713554 07/09/16 03:53 PM
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TLW Offline
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200 merc... never mind.....................

Re: 200 Merc Water Pump Sealer Question [Re: tdavis184] #11715697 07/11/16 12:40 AM
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tdavis184 Offline OP
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Motor is a 1995 mercury 200 Xri 2.5 Liter fuel injected

Re: 200 Merc Water Pump Sealer Question [Re: tdavis184] #11715948 07/11/16 03:02 AM
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TLW Offline
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i vote no... never have, never will.. as you will see every part "stacks up" on tha studs and two tits... no way they can move when installed right... jmo

2-4-C With Teflon (92-825407A12) used on o-ring and seals (rubber only)

Last edited by TLW; 07/11/16 03:16 AM.
Re: 200 Merc Water Pump Sealer Question [Re: tdavis184] #11716248 07/11/16 12:55 PM
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gary purdy Offline
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Originally Posted By: tdavis184
Motor is a 1995 mercury 200 Xri 2.5 Liter fuel injected
That would have been good info in the original post.


The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
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