Check Low-Temperature Circuit Coolant Level - AP20.30-P-2052P

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Engine 139 in model 118, 177, 247

Courtesy of MERCEDES-BENZ USA

Shown on engine 139 in model 177.053

	Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.	Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the overpressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses.	AS20.00-Z-0001-01A
Notice	Notes on coolant		AH20.00-P-2080-01KOA
	Remove
1	Remove engine cover (3).		AP01.10-P-2405-01K
2	Unscrew cap (1) from coolant expansion reservoir for low-temperature circuit (2).
	Check
3	Check coolant level.	With a cold engine, the coolant level must reach the marking (arrow) in the low-temperature circuit coolant expansion reservoir (2). When the coolant is warm: approx. 1 cm (0.39 inch) above the marking (arrow). If the coolant level is too low, ↓ Check cooling system for leak tightness and coolant for antifreeze content.
		Coolant specifications After obtaining special order.	BB00.40-P-0310-01A
	Install
4	Seal coolant expansion reservoir for low-temperature circuit (2) with cap (1).
5	Install engine cover (3).		AP01.10-P-2405-01K