Drain/fill in coolant - AR20.00-P-1142SMG

ENGINE 156 in MODEL 216, 221 

Fig 1: Identifying Radiator Drain Plug And Cylinder Crankcase Drain Screw

Courtesy of MERCEDES-BENZ USA

	Drain
	Risk of injury  caused by fingers being pinched or crushed  when removing, installing or aligning hoods, doors, trunk lids, liftgates or sliding roof	Keep body parts and limbs well clear of moving parts.	AS00.00-Z-0011-01A
	Risk of death  caused by vehicle slipping or toppling off the lifting platform.	Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.	AS00.00-Z-0010-01A
	Risk of injury  to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning  caused by swallowing coolant.	Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses.	AS20.00-Z-0001-01A
	Risk of explosion  caused by escaping oxyhydrogen gas. Risk of injury  caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte (contains diluted sulfuric acid) or metal spatter due to short circuit. Risk of burn injuries  caused by short circuit. Risk of poisoning  caused by swallowing battery electrolyte (contains diluted sulfuric acid) or absorption of lead over the skin or orifices	No fire, sparks, open flames or smoking. Wear acid-resistant gloves and clothing and safety glasses with side guards. Do not place any conductive objects on the battery and avoid any short circuit from battery positive to ground. Only fill liquid battery electrolyte (diluted sulfuric acid) into suitable and appropriately marked containers.	AS54.10-Z-0001-01A
1	Disconnect ground line from battery	When draining coolant at the right drain plug (3) on the crankcase.	AR54.10-P-0003SX
	Notes on battery	All models	AH54.10-P-0001-01A
2	Open engine hood
3	Open cap on coolant expansion reservoir	Unscrew cap slowly and release excess pressure, then screw down cap.
4	Raise vehicle with vehicle lift		AR00.60-P-1000SX
5	Remove bottom engine compartment paneling		AR61.20-P-1105SX
	Drain coolant from radiator
6	Slide collector siphon hose onto fitting on radiator	The fitting is located at the bottom left on the radiator.
7	Open siphon hose (1) on radiator and drain coolant	Catch coolant in a suitable vessel. Observe regulations for disposal of coolant.
	Drain coolant at crankcase
8	Loosen crankcase drain plug on the left (2) and crankcase drain plug on the right (3)	Only loosen drain plug from crankcase until it can be turned by hand.
9	Push drain hose onto crankcase drain screws
10	Continue to loosen crankcase drain screws by hand and drain of coolant	Catch coolant in a suitable vessel. Observe regulations for disposal of coolant.
	Filling
11	Tighten drain plug (1) at radiator and detach siphon hose from fitting	After coolant is drained at the radiator.
12	Detach drain hose from crankcase drain screws	After coolant is drained at the radiator.
13	Tighten crankcase drain plug on the left (2) and crankcase drain plug on the right (3)		*BA03.20-P-1009-01J
14	Pour in coolant and bleed cooling system	Use clean coolant again.	AR20.00-P-1142-04A
	Notes on coolant	All engines	AH20.00-N-2080-01A
	Notes on coolant level		AH20.00-P-1142-01V
	Coolant specifications	Sheet 310.1	Coolant (Specification 310.1). See https://bevo.mercedes-benz.com/index.php?language_id=1
	Anticorrosion/antifreeze agents (Sheet 325.0)	Sheet 325.0	Anticorrosion/antifreeze agents (Specification 325.0). See https://bevo.mercedes-benz.com/index.php?language_id=1
		Cooling system	*BF20.00-P-1001-02U
		Tester cap	Figure
		Pressure pump	Figure
		Cooler vacuum filling device	Figure
15	Inspecting cooling system for leaks		AR20.00-P-1010SX
16	Install engine compartment paneling		AR61.20-P-1105SX
17	Lower vehicle
18	Screw cap onto coolant expansion reservoir
19	Connect ground cable to battery	After fully tightening the crankcase drain plug on the right (3).	AR54.10-P-0003SX
20	Perform basic programming	Only if ground lead of battery has been disconnected.
21	Close engine hood

CRANKSHAFT BEARING CAP

Number	Designation		Engine 156
BA03.20-P-1009-01J	Drain screw for coolant	Nm	15

COOLING SYSTEM

Number	Designation			Engine 156 in model 216, 221
BF20.00-P-1001-02U	Cooling system	Total filling capacity	≈Liters	10
		Antifreeze/water	Up to -37°C	50/50
			up to -45°C	55/45
		Specifications for Operating Fluids	Specification	Coolant (Specification 310.1). See https://bevo.mercedes-benz.com/index.php?language_id=1
			Specification	Anticorrosion/antifreeze agents (Specification 325.0). See https://bevo.mercedes-benz.com/index.php?language_id=1

Fig 2: Identifying Test Cap (210 589 00 91 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Pressure Pump (124 589 24 21 00)

Courtesy of MERCEDES-BENZ USA

Fig 4: Identifying Vacuum-Type Cooling System Filler (285 589 00 21 00)

Courtesy of MERCEDES-BENZ USA