CRANKSHAFT 1W6206 - Caterpillar

Clean the cooling system and flush the cooling system before the recommended maintenance interval if the following conditions exist:
The engine overheats frequently.
Foaming is observed.
The oil has entered the cooling system and the coolant is contaminated.
The fuel has entered the cooling system and the coolant is contaminated.Note: When the cooling system is cleaned, only clean water is needed when the ELC is drained and replaced.Note: Inspect the water pump and the water temperature regulator after the cooling system has been drained. This inspection is a good opportunity to replace the water pump, the water temperature regulator, and the hoses, if necessary.Drain
Pressurized System: Hot coolant can cause serious burns. To open the cooling system filler cap, stop the engine and wait until the cooling system components are cool. Loosen the cooling system pressure cap slowly in order to relieve the pressure.
Stop the engine and allow the engine to cool. Loosen the cooling system filler cap slowly to relieve any pressure. Remove the cooling system filler cap.
Illustration 1 g03890108
Typical example
Remove drain plug (1) on the engine. Open the drain cock or remove the drain plug on the radiator.Allow the coolant to drain.
Refer to OEM for the drain location for your application.
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 Cat dealer or consult Dealer Service Tools.Drain Plugs for Factory Installed Radiators
Illustration 2 g06164641
Typical example
(2) C1.7 Three cylinder radiator drain plug
(3) C2.2 Four cylinder turbocharged engine radiator drain plug
(4) C2.2 Four cylinder turbocharged aftercooled engine drain plug front of radiator
Tighten drain plug (2) to a torque of 4 N m (35.4 lb in)
Tighten drain plug (3) to a torque of 4 N m (35.4 lb in)
Tighten drain plug (4) to a torque of 6 N m (53. lb in)Flush
Flush the cooling system with clean water to remove any debris.
Close the drain valve (if equipped). Clean the drain plugs. Install the drain plugs. Refer to Torque Specifications, SENR3130 for more information on the correct torques.
Do not fill the