changing the thermostat on 1990 Volkswagen Cabriolet

I'm trying to change the thermostat and tried using a socket with extension and it did not fit...does another part need to be removed to get to it?

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1 answer
you must remove the pulley on the sterring pump and then remove the bolts holding the pump there are 2 bolts on the bottom one long bolt on top and 2 bolts coming in from tthe front and back once these are removed the bracket will pull forward allowing you to remove the thermosts housing , bracket bolts are 13mm and the housing is 10mm