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Seized seacock
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I tried to find the thread on ‘how to unseize a seacock in the archives but ran out of ‘search patience’. What is the procedure to free up a seacock? Once it is free, what category of lubricant do I use?
Thanks, Dave G
Serenade S34-1 #184
NB, Canada
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I believe the grease is listed here. With the best way to free the cone style.?
A rewarding job that lasts many years.?
Please don’t ask if you should replace them or comment if you have a preference for a different style! ?That’s the dreaded seacock wars!?
Stephanie
Arista, S36 #67, Lake Ontario?
Shburgess1207@...?
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On Mar 21, 2025, at 20:20, David Gerhardt via groups.io <davidgerhardt56@...> wrote:
?I tried to find the thread on ‘how to unseize a seacock in the archives but ran out of ‘search patience’. ?What is the procedure to free up a seacock? ?Once it is free, what category of lubricant do I use?
Thanks, Dave G
Serenade S34-1 #184
NB, Canada
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Stephanie
Moderator
Sabre 36, #67
Formerly Sabre 28-2, #289
Wilson Harbor, NY Lake Ontario
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I believe the grease is listed here. With the best way to free the cone style.?
A rewarding job that lasts many years.?
Please don’t ask if you should replace them or comment if you have a preference for a different style! ?That’s the dreaded seacock wars!?
Stephanie
Arista, S36 #67, Lake Ontario?
?I tried to find the thread on ‘how to unseize a seacock in the archives but ran out of ‘search patience’. ?What is the procedure to free up a seacock? ?Once it is free, what category of lubricant do I use?
Thanks, Dave G
Serenade S34-1 #184
NB, Canada
--
Stephanie
Moderator
Sabre 36, #67
Formerly Sabre 28-2, #289
Wilson Harbor, NY Lake Ontario
I had to service most of mine which were frozen before Geico would insure the boat.
I found that once you remove the lock nut and loosen the adjusting nut, a light wack with a hammer did the trick. Be sure to protect the threads on the cone stud if you go this route. I unscrewed the adjusting nut enough to protect the threads, and tapped on the nut not the stud.
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Greg
34-338
Duet
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Greg, is the ‘light wack’ is on the adjusting nut?
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I had to service most of mine which were frozen before Geico would insure the boat.
I found that once you remove the lock nut and loosen the adjusting nut, a light wack with a hammer did the trick. Be sure to protect the threads on the cone stud if you go this route. I unscrewed the adjusting nut enough to protect the threads, and tapped on the nut not the stud.
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Greg
34-338
Duet
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I just serviced all of the Spartan Seacocks on my boat, before I started only 3 of my 10 worked, now they all unfrozen and work as they should.
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I used the Spartan service kit, which I bought here: ?
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I then followed the instructions that Stephanie posted, really glad I had those. ?For the Seacocks that were frozen, I chose to lightly tap on the handle with a small hammer, and that freed all of them. ?I was very careful, as I knew not to "beat" on them. ?Turns out all of mine were in great shape, and I only had to lap 2 of them. ?The rest I was able to simply clean up with a solvent degreaser, re-grease and then reassemble. ?
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In total it took an afternoon to do all of them, but really glad I did.
?
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Tim Dokken
1985 Sabre 32 #59
Bayfield, WI
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On Mar 21, 2025, at 11:37 PM, Tim Dokken via < timdokken@...> wrote:
I just serviced all of the Spartan Seacocks on my boat, before I started only 3 of my 10 worked, now they all unfrozen and work as they should.
?
I used the Spartan service kit, which I bought here: ?
?
I then followed the instructions that Stephanie posted, really glad I had those. ?For the Seacocks that were frozen, I chose to lightly tap on the handle with a small hammer, and that freed all of them. ?I was very careful, as I knew not to "beat" on them. ?Turns out all of mine were in great shape, and I only had to lap 2 of them. ?The rest I was able to simply clean up with a solvent degreaser, re-grease and then reassemble. ?
?
In total it took an afternoon to do all of them, but really glad I did.
?
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Tim Dokken
1985 Sabre 32 #59
Bayfield, WI
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Yes, Dave. I tapped on the adjusting nut to push the cone out sideways.
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Greg
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As a counterpoint to Tim’s experience, I offer that it may take more than one afternoon.
My galley sink drain seacock was a true PITA stuck in the closed position when I got my boat. ?
I cut the hose off, and sprayed PBlaster down into it, ?and let it sit overnight.
I took the handle off (feared the soft metal ears would bend), and used an old 8” monkey wrench(flat jaws, not grooved) tightened on the barrel tang to apply torque.
No joy.
I soaked the seacock with PBlaster again and waited overnight.
Tried the wrench again. ?No joy.
Broke out the heat gun on 7 for several minutes to heat the seacock.
Tried the wrench again. ?No joy
Soaked again overnight.
Tried again with heat and wrench. ?No joy this day, but on day four, I added a cheater bar to the wrench and the valve budged and I was able to remove the core.
Lapped with Spartan compound, it now works flawlessly again.
Jeff B
S/V Northwood
S34-2, 347
Deale, MD
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On Mar 21, 2025, at 10:37?PM, Tim Dokken via groups.io <timdokken@...> wrote:
?
I just serviced all of the Spartan Seacocks on my boat, before I started only 3 of my 10 worked, now they all unfrozen and work as they should.
?
I used the Spartan service kit, which I bought here: ?
?
I then followed the instructions that Stephanie posted, really glad I had those. ?For the Seacocks that were frozen, I chose to lightly tap on the handle with a small hammer, and that freed all of them. ?I was very careful, as I knew not to "beat" on them.
?Turns out all of mine were in great shape, and I only had to lap 2 of them. ?The rest I was able to simply clean up with a solvent degreaser, re-grease and then reassemble. ?
?
In total it took an afternoon to do all of them, but really glad I did.
?
--
Tim Dokken
1985 Sabre 32 #59
Bayfield, WI
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Jeff B
1988 Sabre 34-2, 347
S/V Northwood
Deale, MD
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I was out to the boat today and tried to move a few seacocks just out of curiosity and no go, so will apply the solvent, tool force and patience approach.
Dave G Serenade 1983 34-1 #184
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On Mar 22, 2025, at 4:39 PM, Jeff Bartlett via < Jhbartlett@...> wrote:
As a counterpoint to Tim’s experience, I offer that it may take more than one afternoon.
My galley sink drain seacock was a true PITA stuck in the closed position when I got my boat. ?
I cut the hose off, and sprayed PBlaster down into it, ?and let it sit overnight.
I took the handle off (feared the soft metal ears would bend), and used an old 8” monkey wrench(flat jaws, not grooved) tightened on the barrel tang to apply torque.
No joy.
I soaked the seacock with PBlaster again and waited overnight.
Tried the wrench again. ?No joy.
Broke out the heat gun on 7 for several minutes to heat the seacock.
Tried the wrench again. ?No joy
Soaked again overnight.
Tried again with heat and wrench. ?No joy this day, but on day four, I added a cheater bar to the wrench and the valve budged and I was able to remove the core.
Lapped with Spartan compound, it now works flawlessly again.
Jeff B S/V Northwood S34-2, 347 Deale, MD On Mar 21, 2025, at 10:37?PM, Tim Dokken via <timdokken@...> wrote:
? I just serviced all of the Spartan Seacocks on my boat, before I started only 3 of my 10 worked, now they all unfrozen and work as they should. ? I used the Spartan service kit, which I bought here: ? ? I then followed the instructions that Stephanie posted, really glad I had those. ?For the Seacocks that were frozen, I chose to lightly tap on the handle with a small hammer, and that freed all of them. ?I was very careful, as I knew not to "beat" on them. ?Turns out all of mine were in great shape, and I only had to lap 2 of them. ?The rest I was able to simply clean up with a solvent degreaser, re-grease and then reassemble. ? ? In total it took an afternoon to do all of them, but really glad I did. ? -- Tim Dokken?
1985 Sabre 32 #59
Bayfield, WI
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I had one last summer that got tight and in August the pressure caused a slight drip / weep on one end below the nut that holds it down. I need to fix this spring. Anyone ever have this issue and thoughts???
On Fri, Mar 21, 2025 at 8:20?PM David Gerhardt via <davidgerhardt56= [email protected]> wrote: I tried to find the thread on ‘how to unseize a seacock in the archives but ran out of ‘search patience’.? What is the procedure to free up a seacock?? Once it is free, what category of lubricant do I use?
Thanks, Dave G
Serenade S34-1 #184
NB, Canada
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Mine also would not budge. I was afraid to use force on the handle for two reasons. 1 it might break. 2 I might pull the seacock out and damage the thru hull fitting.?
Loosening the retaining nuts and tapping the stud worked like a charm. No damage. See previous post.
Greg
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I had two that were seized - galley and head
I removed both nuts (24mm) and then used a piece of wood between the nut and hammer to tap it loose.
I had to drill a small 2" hole in the bulkhead to gain access to the head seacock (suggested by someone in this thread) to get enough leverage to tap out the seacock.
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I cleaned them out with blue shop rags before proceeding.
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I used Loctite Clover grinding paste lapping compound and Quicksilver 2-4-C marine grease with Teflon. (found on Amazon)
Both work great now.? I did lap them twice each - cleaning between each process.
They should be somewhat stiff when you put them back together.
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I have a couple more Spartan style left to complete - behind the engine (supplying water to the head (toilet) and the V-berth sink drain.
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Tim R
38MKII in refit
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FYI
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The Spartan lapping compound is 320 Grit
The Loctite is 280 grit
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I personally see no issue using 280
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Tim R
38MKII in refit
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David Gerhardt
Stephanie
Tim Dokken
Keith Bucklen
Tim Rivard