Fuels, Lubricants and Coolant CTM100 (06APR04) 01-002-15 P OWER T ECH 10.5 L & 12.5 L Diesel Engines 040604 PN=45 Flush and Service 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. –UN–23AUG88 Slowly loosen cap to first stop to relieve pressure before removing cap completely. IMPORTANT: Air must be expelled from cooling TS281 system when system is refilled. Follow procedure given in your operator’s manual. The ethylene glycol base (antifreeze) can become depleted of SCAs allowing various acids to form that will damage engine components.
In addition, heavy metals, such as lead, copper and zinc, accumulate in the ethylene glycol base. The heavy metals come from corrosion that occurs to some degree with in a cooling system. When a coolant is saturated to the point where it can no longer hold heavy metals and other dissolved solids, they settle out and act as abrasives on engine parts. NOTE: Refer to your operator’s manual for a specific service interval. Flush cooling system as described in your operator’s manual. Clean cooling system with clean water and TY15979 John Deere Heavy-Duty Cooling System Cleaner or an equivalent cleaner such as FLEETGUARD RESTOREor RESTORE PLUS. Follow the instructions provided with the cleaner.
Refill cooling system with the appropriate coolant solution. See ENGINE COOLANT SPECIFICATIONS, earlier in this group. FLEETGUARD is a registered trademark of the Cummins Engine Company. RESTORE is a trademark of FLEETGUARD. RESTORE PLUS is a trademark of FLEETGUARD. Continued on next page RG,01,DT7033 –19–29OCT97–1/2 01 002 15