Lubrication & Maint./2000 Hour/24 Month Flushing and Refilling Cooling System CAUTION: Explosive release of fluids from pressurized cooling system can cause serious burns. Shut off engine. Only remove filler cap when cool enough to touch with bare hands. Slowly loosen cap to first stop to relieve pressure before removing completely. TS281 –UN–23AUG88 NOTE: When John Deere COOL-GARD is used, the drain interval is 3000 hours or 36 months. The drain interval may be extended to 5000 hours or 60 months of operation, provided that the coolant is tested annually AND additives are replenished, as needed, by adding a supplemental coolant additive (SCA) .
High-Pressure Fluids If COOL-GARD is not used, the flushing interval is 2000 hours or 24 months of operation. Drain old coolant, flush the entire cooling system, test thermostats, and fill with recommended clean coolant per the following procedure. 1. Pressure test entire cooling system and pressure cap if not previously done. (See PRESSURE TESTING COOLING SYSTEM, in the Lubrication and Maintenance/500 Hour/12 Month Section.) RG12833 –UN–13FEB03 2. Slowly open the engine cooling system filler cap or radiator cap (A) to relieve pressure and allow coolant to drain faster. Radiator Cap Continued on next page OURGP11,0000221 –19–15OCT03–1/4 35-3 021604 PN=161