OMRG25204 oem uncert & tier 1.pdf - John Deere Industrial Engines

Service as RequiredAdding CoolantCAUTION: Explosive release of fluids frompressurized cooling system can cause seriousburns.Shut off engine. Only remove filler cap whencool enough to touch with bare hands. Slowlyloosen cap to first stop to relieve pressurebefore removing completely.IMPORTANT: Never pour cold liquid into a hotengine, as it may crack cylinder head orblock. DO NOT operate engine withoutcoolant for even a few minutes.High-Pressure FluidsTS281 –UN–23AUG88John Deere TY15161 Cooling SystemSealer may be added to the radiator tostop leaks. DO NOT use any otherstop-leak additives in the system.Air must be expelled from coolingsystem when coolant is added.1. Loosen temperature sending unit fitting at rear ofcylinder head or plug in side of thermostat housing toallow air to escape when filling system.IMPORTANT: When adding coolant to the system, usethe appropriate coolant solution. ( SeeENGINE COOLANT SPECIFICATIONS inFuels, Lubricants, and Coolant Sectionfor mixing of coolant ingredients beforeadding to cooling system.)Do not overfill cooling system. Apressurized system needs space forheat expansion without overflowing attop of radiator.Radiator Filler CapA—Radiator Filler CapRG12833 –UN–13FEB032. Remove radiator cap (A) and fill until coolant leveltouches bottom of radiator filler neck.3. Tighten plugs and fittings when air has been expelledfrom system.4. Run engine until it reaches operating temperature.OURGP12,0000049–19–22JUL04–1/145-2 110306PN=107