Drain/pour in coolant

AR20.00-P-1142RKC

31.01.2019

Engine	279 in model 231
Engine	279 in model 463

Shown on model 231

1	Cap
2	Coolant expansion reservoir
3	Drain fitting
4	Drain screw

P20.00-2480-06

5	Screw
6	Screw
7	Heat shield
8	Drain fitting

P20.00-2481-06

 Caution	Risk of injury caused by scraping or cutting body parts on sharp vehicle parts	Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels.	AS00.00-Z-0017-01A
 Warning	Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.	Wear protective gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
 Warning	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 pressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses.	AS20.00-Z-0001-01A
Topical note	Notes on coolant		AH20.00-N-2080-01A
	Remove
1	Unscrew cap (1) on coolant expansion reservoir (2)
2	Remove front lower engine compartment paneling	Model 463 with engine 279 as of model year 2016 up to model year 2019 except code ZQ0 (G 500 4x42)	AR61.20-P-1105GW
		Engine 279 in model 231	AR61.20-P-1105RK
	Drain coolant at engine radiator
3	Slide drain hose onto drain fitting (3)
4	Open drain screw (4), drain coolant and catch in a suitable container
5	Close off drain screw (4) and detach drain hose from drain fitting (3)
	Drain coolant on crankcase
6	Remove left catalytic converter	Engine 279 in model 463 as of model year 2013	AR49.10-P-5500GW
		Engine 279 in model 231	AR49.10-P-7100RKC
7	Remove screw/bolt (5)
8	Remove screw/bolt (6)
9	Press heat shield (7) to the side
10	Loosen drain fitting (8) and push drain hose onto drain fitting (8)
11	Open drain screw (8), drain coolant and catch in a suitable container
12	Close drain fitting (8) and detach drain hose	 Screw plug to threaded fitting	*BA09.40-P-1011-01V
13	Press back heat shield (7)
14	Tighten bolt (5)	 M61	*BA00.10-P-1002-04A
15	Tighten screw (6)	 Engine 279 in model 463 with transmission 722.9Bolt, automatic transmission to crankcase	*BA27.40-P-1001-01E
		 Engine 279 in model 231 with transmission 722.9Bolt, automatic transmission to engine	*BA27.40-P-1008-01A
16	Install left catalytic converter	Engine 279 in model 463 as of model year 2013	AR49.10-P-5500GW
		Engine 279 in model 231	AR49.10-P-7100RKC
	Pour in
17	Pour in coolant and ventilate engine cooling system		AR20.00-P-1142-04A
	Anticorrosion/antifreeze agents (Sheet 325.0)		BB00.40-P-0325-00A
	Coolant specifications		BB00.40-P-0310-01A
		 Reuse clean coolant only.
		 Cooling system	*BF20.00-P-1001-02GA
		 Electric vacuum pump	*285589022100
		 NTKL Adaption	*285589012100
		 Cooler vacuum filling device	*285589002100
		 Test cap	*210589009100
	Check
18	Check engine cooling system for leaktightness	Engine 279 in model 463	AR20.00-P-1010MNF
		Engine 279 in model 231	AR20.00-P-1010RKC
	Install
19	Attach front lower engine compartment paneling	Model 463 with engine 279 as of model year 2016 up to model year 2019 except code ZQ0 (G 500 4x42)	AR61.20-P-1105GW
		Engine 279 in model 231	AR61.20-P-1105RK

 Metric screws/bolts and nuts as per MBN 10 105, 10 143

Number	Designation		8.8	10.9
BA00.10-P-1002-04A	M61	Nm	9	13

 Exhaust gas turbocharger

Number	Designation		Engine 279
BA09.40-P-1011-01V	Screw plug to threaded fitting	Nm	12

 Housing

Number	Designation		Transmission 722.9 in model 463
BA27.40-P-1001-01E	Bolt, automatic transmission to crankcase	Nm	39

 Housing

Number	Designation			Transmission 722.9
BA27.40-P-1008-01A	Bolt, automatic transmission to engine	M1040	Nm	38
		M1045	Nm	38
		M1090	Nm	38
		M12	Nm	–

 Cooling system

Number	Designation				Engine 279 in model 231	Engine 279 in model 463
BF20.00-P-1001-02GA	Cooling system	Workshop replacement amount	Main circuit	Liter	12,8	14,0
			Low-temperature circuit	Liter	3,5	5,0
		Antifreeze/water	Down to -37°C	%	50/50	50/50
			-38°C and below	%	50/50	55/45
			Specifications for Operating Fluids, sheet		BB00.40-P-0310-01A	BB00.40-P-0310-01A
			Specifications for Operating Fluids, sheet		BB00.40-P-0325-06A	BB00.40-P-0325-06A
			Specifications for Operating Fluids, sheet		BB00.40-P-0326-06A	BB00.40-P-0326-06A

285 589 01 21 00

NTKL Adaption

210 589 00 91 00

Test cap

285 589 02 21 00

Electric vacuum pump

285 589 00 21 00

Cooler vacuum filling device

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