Check Main Circuit Coolant Level - AP20.30-P-2050GB

Engine 157, 276, 278, 642, 651 in model 166 

Courtesy of MERCEDES-BENZ USA

	Remove
1	Switch off ignition
2	Open engine hood
			AR88.40-P-1000GQ
	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
3	Unscrew cap (1) for coolant expansion reservoir (2)
	Check
4	Check coolant level
Notice	Notes on coolant		AH20.00-P-2080-01KOA
		The coolant level must, on a cold engine, reach up to the marking (arrow) in the coolant expansion reservoir. When the coolant is warm, about 1 cm above the marking (arrow). If coolant level is too low: ↓ Check coolant for leaktightness and check coolant for antifreeze content subject to separate repair order.
	Install
5	Seal coolant expansion reservoir (2) with cap (1)
6	Close engine hood
			AR88.40-P-1000GQ