Adım 4 çevriliyor
Before removing the bolts that hold the thermostat cover to the housing, spray all three with some penetrating lubricant. These bolts are exposed at the back and often are somewhat rusted in. Try to spray lubricant on both the back and front of the housing where the bolts are.
The rear of two of the bolts shown here. This may be tricky to access with the housing installed in the engine but do your best.