Replacing thermastat mecury o/b 135

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powrguy

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Re: Replacing thermastat mecury o/b 135

If you have a Manual, it's pretty clear. Two bolts hold the thrermostat housing, and the t-stat comes right out. When you remove it, clean the surfaces of the head and the housing really well. The gasket is a round washer-like rubber seal, and it has a lip that goes on each side of the thermostat flange. It forms a seal on BOTH sides of the flange, by having the flange in the slot on the inside edge of the rubber gasket.
 
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starcraft1982

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Re: Replacing thermastat mecury o/b 135

Yep.Take it out Most t-stats are 140 degrees so get a thermometer and a pan of water on the stove.dunk them into the water that is over 140 and see if they open.
 
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Chris1956

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Re: Replacing thermastat mecury o/b 135

If you have a V6 motor you have two thermostats. If you have an inline six, you have zero thermostats.

What have you got?
 
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Chris1956

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Re: Replacing thermastat mecury o/b 135

You should see the two bolt thermostat covers on each cylinder head. They will have hoses that run to the telltale and exhaust passage.
 
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powrguy

Petty Officer 2nd Class
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Messages
180
Re: Replacing thermastat mecury o/b 135

rodgfisherman said:
I have a V 6 ,will i have to remove the block to access.
Click to expand...

Open the motor covers; you'll see the t-stats at the top of each cylinder head, with hoses that run to a t-coupling down to the midsection where they discharge through the "pee-hole". You don't have to disassemble the motor, just open the covers and remove them, and you will be on your way.
 
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