WASHER 4731733 - Caterpillar

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Drain for the cylinder block for the turbocharged 3034 Marine engine (3) Drain for the cylinder block (4) Closed crankcase breather
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(5) Drain plug for the heat exchanger (6) Heat exchanger
Open the cooling system drain valve (if equipped). If the cooling system is not equipped with a drain valve, remove the cooling system drain plugs.On naturally aspirated engines, remove the drain plug from the cylinder block (1). The drain plug is located near the fuel filter (2). On turbocharged engines, remove the drain plug from the cylinder block (3). The drain plug is located near the closed crankcase breather (4). Remove the drain plug (5) for the heat exchanger (6). 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 Service Technology Group:Outside Illinois: 1-800-542-8665Inside Illinois: 1-800-541-8665Canada: 1-800-523-8665Flush
Flush the cooling system with clean water in order to remove any debris.
Close the drain valve (if equipped). Clean the drain plugs. Install the drain plugs. Refer to the Operation and Maintenance Manual for more information on the proper torques.
Do not