Section 8 - Cooling System - Group 08 Thermostat Housing Assembly - Rebuild (8-10) M11 Page 8-43 Warning: When using a steam cleaner, wear protective clothing and safety glasses or a face shield. Hot steam will cause serious personal injury. Use steam to clean the parts. Dry with compressed air. Inspection Visually inspect the parts for excessive corrosion, cracks or damage. Visually inspect the thermostat for cracks or other dam- age. If excessive corrosion, cracks or other damage is found the part must be replaced. Refer to Thermostat - Check Operating Temperature (8-11).
Assembly When installing the thermostat water seal, the flat side of the seal must be facing the thermostat seal mandrel. Use the thermostat seal mandrel, Part No. ST-1225, and a mallet to install the new seal.