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

Engine 260, 282, 608, 654 in model 177 

Shown on engine 608 in model 177.0 

Courtesy of MERCEDES-BENZ USA

	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
	Check
1	Check coolant level in area of coolant expansion reservoir joint (3) of coolant expansion reservoir (2).	If the coolant level is above the coolant expansion reservoir joint (3), ↓ coolant level correct, check complete, no further operations steps necessary. If the coolant level is below the coolant expansion reservoir joint (3), ↓ check coolant level in coolant expansion reservoir (2), continue with operation step 2.
	Remove
2	Unscrew the cap (1) of the coolant expansion reservoir (2).
	Check
3	Check coolant level.	With a cold engine, the coolant level must reach the marking (arrow) in the 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 Subject to separate repair order.	BB00.40-P-0310-01A
	Install
4	Seal coolant expansion reservoir (2) with cap (1).