Drain/pour in coolant

AR20.00-P-1142GQ

12.11.2018

Engine	157, 276, 278, 642 in model 292
Engine	157, 276, 278, 642, 651 in model 166

Modification notes

15.04.2016

Work procedure completely revised.

Shown on model 166 with engine 278

2	Cap
3	Drain hose
3a	Fitting
4	Coolant expansion reservoir
6	Radiator
7	Drain valve

P20.00-2429-06

Engine 276

1	Coolant pump
3	Drain hose
5	Coolant pump drain screw

P20.00-2406-11

Shown on model 222 with engine 651

3	Drain hose
10	Crankcase drain screw
11	Bolts
12	Heat shield
13	Bolts
14	Heat shield

P20.00-2514-06

 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
	Notes on coolant level		AH20.00-P-1142-01CW
	Drain off
1	Unscrew cap (2) on coolant expansion reservoir (4)
2	Remove front and center underfloor paneling		AR61.30-P-1001GQ
3	Push drain hose (3) onto left fitting (3a) on radiator (6)
4	Open drain valve (7) at radiator (6) and drain coolant	 Observe regulations to dispose of coolant.
5	Unfasten drain screw from coolant line to ATL and drain off coolant	Engine 157, 278 in model 166, 292
6	Unfasten coolant pump drain screw (5) at coolant pump (1)	Engine 276 in model 166, 292
7	Push drain hose (3) onto coolant pump drain screw (5)	Engine 276 in model 166, 292
8	Open coolant pump drain screw (5) at coolant pump (1) and drain off coolant	Engine 276 in model 166, 292
9	Remove catalytic converter DPF unit	Engine 651 in model 166
			AR49.10-P-5501GQ
10	Unscrew screws (11) and remove heat shield (12)	Engine 651 in model 166
11	Unscrew screws (13) and remove heat shield (14)	Engine 651 in model 166
12	Unfasten crankcase drain screw (10)	Engine 651 in model 166
13	Push drain hose (3) onto crankcase drain screw (10)	Engine 651 in model 166
14	Open crankcase drain screw (10) and drain off coolant	Engine 651 in model 166
	Pour in
15	Close jiggle valve (7) on cooler (6) and detach drain hose (3) from fitting (3a)
16	Fasten drain screw from coolant line to ATL	Engine 157, 278 in model 166, 292
		 Drain screw to coolant line	*BA09.40-P-1010-01R
17	Push drain hose (3) onto coolant pump drain screw (5)	Engine 276 in model 166, 292
18	Tighten coolant pump drain screw (5) at coolant pump (1)	Engine 276 in model 166, 292
		 Drain screw on coolant pump	*BA20.10-P-1008-01AA
19	Push drain hose (3) onto crankcase drain screw (10)	Engine 651 in model 166
20	Tighten down crankcase drain screw (10)	Engine 651 in model 166
		 Coolant drain plug on crankcase	*BA20.00-P-1001-02A
21	Install heat shield (14)	Engine 651 in model 166
		 Heat shield on starter	*BA15.30-P-1004-01P
22	Install heat shield (12)	Engine 651 in model 166
		 Bolt, heat shield to engine support	*BA22.10-P-1003-02A
23	Install catalytic converter DPF unit	Engine 651 in model 166	AR49.10-P-5501GQ
24	Pour in coolant and bleed cooling system		AR20.00-P-1142-04A
		 Re-use clean coolant.
		 Engine 157 in model 166 Engine 157 in model 292Cooling system	*BF20.00-P-1001-02FA
		 Engine 651 in model 166Cooling system	*BF20.00-P-1001-02AA
		 Engine 276 in model 166 except code ME05 (HYBRID DRIVE 80KW VARIANT (INCLUDING PLUGIN)) Engine 276 in model 166 with code ME05 (HYBRID DRIVE 80KW VARIANT (INCLUDING PLUGIN)) Engine 276 in model 292Cooling system	*BF20.00-P-1001-02BA
		 Engine 278 in model 166 Engine 278 in model 292Cooling system	*BF20.00-P-1001-02EA
		 Engine 642 in model 166 Engine 642 in model 292Cooling system	*BF20.00-P-1001-02W
		 Electric vacuum pump	*285589022100
		 NTKL Adaption	*285589012100
		 Test cap	*210589009100
		 Cooler vacuum filling device	*285589002100
	Check
25	Check cooling system for leak tightness		AR20.00-P-1010GQ
 Warning	Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
26	Carry out engine test run and check the cooling system for proper operation and leaktightness

 Turbocharger

Number	Designation			Engine 157	Engine 278
BA09.40-P-1010-01R	Drain screw to coolant line	Stage 1	Nm	6	6
		Stage 2	°	90	90

 Starter

Number	Designation		Engine 651
BA15.30-P-1004-01P	Heat shield on starter	Nm	9

 Engine cooling, general

Number	Designation		Engine 651
BA20.00-P-1001-02A	Coolant drain plug on crankcase	Nm	12

 Coolant pump, coolant thermostat

Number	Designation			Engine 276
BA20.10-P-1008-01AA	Drain screw on coolant pump	Stage 1	Nm	6
		Stage 2	°	90

 Engine support (engine side)

Number	Designation		Engine 651
BA22.10-P-1003-02A	Bolt, heat shield to engine support	Nm	9

 Cooling system

Number	Designation				Engine 651 in model 166
BF20.00-P-1001-02AA	Cooling system	Workshop replacement amount	Main circuit	Liter	10,0
			Low temperature circuit	Liter
		Antifreeze/water	Down to -37°C	%	50/50
			-38°C and below	%	55/45
			Specifications for Operating Fluids, sheet		BB00.40-P-0310-01A
			Specifications for Operating Fluids, sheet		BB00.40-P-0325-00A
			Specifications for Operating Fluids, sheet		BB00.40-P-0326-00A

 Cooling system

Number	Designation				Engine 276 in model 166 except code ME05 (HYBRID DRIVE 80KW VARIANT (INCLUDING PLUGIN))	Engine 276 in model 166 with code ME05 (HYBRID DRIVE 80KW VARIANT (INCLUDING PLUGIN))
BF20.00-P-1001-02BA	Cooling system	Workshop replacement amount	Main circuit	l	10,5	9,7
			Low-temperature circuit	l	1,9	6,0
		Antifreeze/water	Up to -37°C	%	50/50	50/50
			As of -38 °C	%	55/45	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-0325-00A	BB00.40-P-0325-00A
			Specifications for Operating Fluids, sheet		BB00.40-P-0326-00A	BB00.40-P-0326-00A

 Cooling system

Number	Designation				Engine 276 in model 292
BF20.00-P-1001-02BA	Cooling system	Workshop replacement amount	Main circuit	l	10,5
			Low-temperature circuit	l	1,9
		Antifreeze/water	Up to -37°C	%	50/50
			As of -38 °C	%	55/45
			Specifications for Operating Fluids, sheet		BB00.40-P-0310-01A
			Specifications for Operating Fluids, sheet		BB00.40-P-0325-00A
			Specifications for Operating Fluids, sheet		BB00.40-P-0326-00A

 Cooling system

Number	Designation				Engine 278 in model 166	Engine 278 in model 292
BF20.00-P-1001-02EA	Cooling system	Workshop replacement quantity	Main circuit	Liter	11,4	11,4
			Low temperature circuit	Liter	2,5	2,5
		Antifreeze/water	Up to -37°C	%	50/50	50/50
			As of -38 °C	%	55/45	55/45
			Sheet		BB00.40-P-0310-01A	BB00.40-P-0310-01A
			Sheet		BB00.40-P-0325-00A	BB00.40-P-0325-00A
			Sheet		BB00.40-P-0326-00A	BB00.40-P-0326-00A

 Cooling system

Number	Designation				Engine 157 in model 166	Engine 157 in model 292
BF20.00-P-1001-02FA	Cooling system	Workshop change quantity	Main circuit	Liter	 8	 8
			Low-temperature circuit	Liter	 2	 2
		Antifreeze/water	Up to -37 °C	%	50/50	50/50
			As of -38 °C	%	55/45	55/45
			Sheet		BB00.40-P-0310-01A	BB00.40-P-0310-01A
			Sheet		BB00.40-P-0325-00A	BB00.40-P-0325-00A
			Sheet		BB00.40-P-0326-00A	BB00.40-P-0326-00A

 Cooling system

Number	Designation				Engine 642 in model 166	Engine 642 in model 292
BF20.00-P-1001-02W	Cooling system	Workshop replacement amount	Main circuit	l	11,5	11,5
			Low-temperature circuit	l	-	-
		Antifreeze/water	Down to -37°C	%	50/50	50/50
			-38°C and below	%	55/45	55/45
			Sheet		BB00.40-P-0310-01A	BB00.40-P-0310-01A
			Sheet		BB00.40-P-0325-00A	BB00.40-P-0325-06A
			Sheet		BB00.40-P-0326-00A	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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