ARM ASSEM. 4N2693 - Caterpillar

Illustration 3 g00475850
Location of the drain plugs (jacket water) for 3612 and 3616 Engines
Open the cooling system drain valves (if equipped). Remove the cooling system drain plugs. Allow the coolant to drain.
Dispose of used engine coolant properly or recycle. Various methods have been proposed to reclaim used coolant for reuse in engine cooling systems. The full distillation procedure is the only method acceptable by Caterpillar to reclaim the used coolant.
For information regarding the disposal and the recycling of used coolant, consult your Caterpillar dealer or consult Caterpillar Dealer Service Tools Group:Outside U.S.A. (309) 675-6277
Inside U.S.A. 1-800-542-TOOL
Inside Illinois 1-800-541-TOOL
Canada 1-800-523-TOOL
CSTG COSA Geneva, Switzerland 41-22-849 40 56
Clean the Cooling System
Use of commercially available cooling system cleaners may cause damage to cooling system components. Use only cooling system cleaners that are approved for Caterpillar engines.
After the cooling system has been drained, flush the cooling system with clean water in order to remove any debris.
Close the cooling system drain valves (if equipped). Clean the cooling system drain plugs and install the cooling system drain plugs.
Fill the cooling system no faster than 19 L (5 US gal) per minute to avoid air locks.
Fill the cooling system with a mixture of clean water and Caterpillar Fast Acting Cooling System Cleaner. Add .5 L (1 pint) of cleaner per 15 L (4 US gal) of the cooling system capacity. Install the cooling system filler cap.
Start the engine. Operate the engine for a minimum of 30