cant get water cover off

M

mikevi

Seaman Apprentice
Joined
Jul 8, 2009
Messages
40
1979 evinrude 35hp 35952a
trying to replace the water cover gasket and thermostat, all screws removed, but cover is not coming off, I would think not to pry it off, tried rubber malot
would a heat gun be useful? any other Ideas to free the cover? looks like it hasn't been off since 1979 when it was built.
 
oldcatamount

oldcatamount

Lieutenant Commander
Joined
Apr 4, 2010
Messages
1,740
Re: cant get water cover off

Try using an old but strong putty knife like you would use a chisel. Start the blade between the cover and the block and tap it in with your mallot, move it over a lttle and do it again. Keep doing this all the way around the cover and you will break the old seal without putting any pressure on the cover or the block.
 
M

mikevi

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Jul 8, 2009
Messages
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Re: cant get water cover off

great idea, that will work, guess I should use the gel seal II on the cover, thinking I should also replace the head gasket too, does the head gasket need the gel seal II also? , I'm reading also some use locktite 518 in place of evindudes gel seal
 
tashasdaddy

tashasdaddy

Honorary Moderator Emeritus
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Messages
51,019
Re: cant get water cover off

many new gaskets say no sealer. never seize on bolts is a good idea.
 
E

ezeke

Supreme Mariner
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Sep 19, 2003
Messages
12,532
Re: cant get water cover off

Gel seal is an anaerobic sealer, metal to metal - used for crankcase halves. It's not appropriate at all for sealing gaskets. A good all-around gasket sealer is 3M 847.
 
M

mikevi

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Messages
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Re: cant get water cover off

ok manual says no sealer on head gasket, but does say gasket sealing compound with gasket on the cover, is that the gel seal II / locktite 518?
 
E

ezeke

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Messages
12,532
Re: cant get water cover off

mikevi said:
ok manual says no sealer on head gasket, but does say gasket sealing compound with gasket on the cover, is that the gel seal II / locktite 518?
Click to expand...

Loctite 518 is an anaerobic sealer, metal to metal - used for crankcase halves. It's not appropriate at all for sealing gaskets. A good all-around gasket sealer is 3M 847.
progress.gif
 
M

mikevi

Seaman Apprentice
Joined
Jul 8, 2009
Messages
40
Re: cant get water cover off

ezeke said:
Loctite 518 is an anaerobic sealer, metal to metal - used for crankcase halves. It's not appropriate at all for sealing gaskets. A good all-around gasket sealer is 3M 847.
progress.gif
Click to expand...

the 3m 847 temp range is -40 to 180 deg F , wouldn't the 180deg f be too low? for the cover?
 
H

Haffiman

Commander
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Dec 17, 2009
Messages
2,454
Re: cant get water cover off

Another name for the Sealing compound by OMC is Loctite Aviation.
This from product specs:

Loctite ? Aviation Gasket Sealant
Loctite ? Aviation Gasket Sealant, slow-drying, non-hardening brushtop sealant approved for use in aviation as well as automotive applications. Temperature range -65 ?F to 400 ?F; resists gasoline, oil and grease.
 
E

ezeke

Supreme Mariner
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Sep 19, 2003
Messages
12,532
Re: cant get water cover off

Three Bond 1211 is also popular.
 
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