Volvo 95 850 thermostat housing removal step by step not the thermostat?

To remove the thermostat housing on a Volvo 850, start by ensuring the engine is cool and disconnect the negative battery terminal. Next, drain the coolant from the radiator by removing the drain plug. Then, remove any hoses connected to the thermostat housing and unfasten the bolts securing the housing in place. Finally, gently pry the housing off the engine block, taking care not to damage any surrounding components or gaskets.