if it came with gasket glue, or if it tells you to use it, use it on both sides. if it doesnt then you dont need to use it.
You can, but if you have a new gasket glue is really not needed.
take out the bolts where the top radiator hose enters the motor,pull out thermostat,clean off gasket material on both sides,install thermostat and new gasket,tighten bolts
BOTH
drain coolant to below thermostat housing level, remove the upper radiator hose from the thermostat housing, remove the tow bolts from the thermostat housing, nremove old thermostat (note position and repace new in same position) clean off all old gasket material, apply gasket sealant to both sides of new gasket, (make sure you have wiped off any coolant that may have spilled when you removed housing) then replace everything you removed. note if you have an o ring with your thermostat, you wont have gasket.
Thermostat. First, drain the radiator at least part way so the coolant level is below the thermostat housing. In most motors, it is where the top radiator hose connects to the motor. There is a dome over it with two or three bolts holding it down. Take the bolts out and gently pry the dome off. Some have a rubber gasket around the thermostat and will just lift off. If there is a paper gasket under the dome, clean it and the top of the motor of the old gasket, replace the thermostat and gasket using gasket sealer on both sides of the gasket. Put the dome back on and refill the radiator.
Loosen clamps and remove radiator hose from thermostat housing on the right front side of the motor and remove retaining bolts. tap housing with a soft hammer to loosen, the thermostat is inside. Scrape off all gasket material and replace thermostat with spring side toward block, apply gasket sealant to both sides of new gasket and reinstall housing with arrow up. good luck
Not sure which engine you have, but for the 4.0 just drain the system, unbolt the thermostat housing from the engine ( right where the upper radiator hose meets the motor ) remove the old thermostat ( pay attention to how it is positioned ) remove all old gasket material, apply water resistant rtv to both sides of new gasket, install new thermostat, install thermostat housing, bolt on tight.
locate the upper radiator hose. follow it from the top right side of the radiator to the engine block. remove the hose from that block , then remove three screws so that little block can be removed where you'll find the thermostat inside. clean the old gasket off both sides of the thermostat housing, replace the thermostat and gasket... dont forget to use a sealant around the edges of the block and the thermostat housing before securing
To change the thermostat-- * drain the cooling system down to thermostat level (or lower) * remove the two (2) thermostat housing bolts, and the housing itself * remove old thermostat, discard gasket and clean both gasket sealing surfaces (pay attention to the orientation of the thermostat when you took it out; it only works one way) * install the new thermostat * place new gasket onto water box surface, over the thermostat, and center the thermostat in the opening of the intake manifold * apply gasket sealant, if necessary * place the housing over the gasket and thermostat, and torque bolts down to 250 in. lbs. * refill cooling system to compensate for lost coolant
Take it off buy a new gasket clean the mating surfaces, both sides, very clean install using permatex
To Replace the thermostat if you follow the water pump toward the back of the engine. The thermostat housing is located right before all of the coolant hoses go into the water pump it is held onto the water pump with 3 bolts with 10mm bolts. the best way is to remove the three bolts and take out the old thermostat and scrape away the old gasket material. then take gasket and new thermostat and put rtv silicone around the top of the thermostat ( I recommend using the 1 minute silicone) then slip the thermostat into thermostat housing. Next take gasket and coat with silicone on both sides of gasket. then slip it in and finger tighten the three bolts. let set for 1 minute or 12 to 24 hours if 1 minute silicone is not used then torque down to appropriate specs don't overtighten
If both metal surfaces are really smooth and you have a good composite gasket then you may not need it. - If you have a good gasket goo available, it can't hurt. -My favorite is 'Permatex Aviation Form a Gasket' .