POWERTECH™ 2.9 L OEM Diesel Engines - John Deere Industrial ...

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. NEVER operate engine withoutcoolant.High Pressure FluidsTS281 –UN–23AUG88John Deere TY15161 Cooling SystemSealer may be added to the radiator tostop leaks on a temporary oremergency basis only. DO NOT use anyother stop-leak additives in the coolingsystem. Leaks should be permanentlyrepaired as quickly as possible.Air must be expelled from coolingsystem when coolant is added.Coolant Temperature Sending Unit FittingRG11607 –UN–25JAN011. Loosen temperature sending unit fitting (A) at rear ofcylinder head to allow air to escape when fillingsystem.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.2. Fill until coolant level touches bottom of radiator fillerneck.3. Tighten fitting when air has been expelled from system.A—Sending Unit FittingRG,RG34710,3593–19–11FEB03–1/145-2 060106PN=106