MAINTENANCE 5. Drain the radiator, and flush the radiator until clean water flows from the radiator. Remove the flushing gun. EYE INJURY To avoid injury from flying debris when using compressed air, wear adequate eye protection (face shield or safety goggles) and do not exceed 276 kPa (40 psi) air pressure. 6. When the coolant has drained, install the coolant drain plug on the radiator. 7. Add coolant in the specified concentration until the maximum mark on the surge tank is reached. Coolant system capacity is listed in Table 30. [c] Apply no more than 140 kPa (20 psi) air pressure intermittently to help dislodge sediment buildup in the core. Table 30 Coolant System Capacity 8.
Start the engine and run it for about one minute at varying speeds to release air pockets in the cooling system. Make sure the heater valve is still open. Check the coolant level and add more coolant if necessary. 10. Add coolant if necessary. 9. Shut down the engine. 94 All information subject to change without notice. (Rev. 04/08) DDC-SVC-MAN-0055 04/08 Copyright © 2008 DETROIT DIESEL CORPORATION Description 4-Cylinder 6-Cylinder Engine Coolant Capacity (all vehicles) L (Qt) Engine capacity 8 (8.5) 12 (12.7) Business Class Coolant System Capacity L (Qt) Total capacity 19.8 (21) 23.6 (25) Antifreeze quantity at 50% 9.9 (10.5) 11.8 (12.5) Antifreeze quantity at 55% 10.8 (11.5) 13.1 (13.8)