Usage:
3406 ( 92U, 8SB ),
3406B ( 7FB, 4MG, 7XC ),
3406B (PEEC) ( 8TC ) Truck Engines
A new 7C3095 Water Temperature Regulator is available for parts service on 3406 and 3406B Truck Engines. The new regulator can be used as a direct replacement for the 4W4842 Water Temperature Regulator. Both regulators have an opening temperature of 88°C (190° F). Use the new regulator in applications where cab heating and/or engine temperatures are not high enough. The new regulator has a flange that is coated with rubber. This helps prevent leakage around the regulator that can result in overcooling.
NOTE: To minimize corrosion and/or carbon build-up on internal engine components, the jacket water temperature must be kept above 79°C (175°). If overcooling continues after the regulator is replaced, install an orifice or 8N9071 Check Valve in the vent line between the cylinder head and radiator.