Thermostat Housing Assembly - Rebuild (8-10) Section 8 - Cooling System - Group 08 M11 Page 8-42 Inspection Visually inspect the parts for cracks, damage or excessive corrosion. If damaged parts or excessive corrosion is found the part must be replaced. Thermostat Housing Assembly - Rebuild (8-10) Disassembly Caution: To prevent future engine damage, do not dam- age the thermostat housing when removing the thermo- stat water seal. Use a punch and hammer to remove the thermostat water seal. Cleaning Use a gasket scraper to remove all gasket material from surfaces (1). Use a wire brush to clean the hose sealing surfaces (2 and 3). Use Scotch-Brite T 7448, Part No.
3823358 or equivalent, to remove the corrosion from the thermostat housing bore.