Drain/fill in coolant

AR20.00-W-1142B

13.12.11

ENGINES 457.9 in MODEL 374, 375, 940, 942, 943, 944, 958

W20.00-1009-11

Illustrated on model 944

1 Cap

W20.00-1008-01

2 Drain screw

3 Drain pipes

4 Drain screw

W20.00-1004-01

W20.00-1003-01

5 Drain screw

(only on vehicles code (BA9) Voith secondary retarder R 115)

6 Drain screw

(only on vehicles with code (BA1) Performance-optimized Voith retarder)

7 Heat exchanger

(only on vehicles with code (BA1) Performance-optimized Voith retarder)

W43.30-1210-01

Modification notes

6.7.11

Value modified: Coolant drain plug to radiator

*BA20.20-N-1003-01E

	Drain
 Danger!	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
	Notes on coolant		AH20.00-N-2080-01A
1	Open maintenance flap
2	Unscrew cap (1).
3	Set temperature selector wheel of heater to max. heat output and switch on ignition
4	Remove soundproofing on frame below
5	Drain coolant at radiator	 To do this, connect a drain hose to the drain fitting (3) and loosen drain screw (2). Collect coolant in clean container.
6	Drain coolant at crankcase	 Remove drain screw (4). Collect coolant in clean container.
7	Remove drain screw (5) from retarder	 Only on vehicles with code (BA9) Voith secondary retarder R 115.
		Collect coolant in clean container.
8	Unscrew drain screw (6) from heat exchanger (7)	 Only on models fitted with code (BA1) Performance-optimized Voith retarder.
		Collect coolant in clean container.
9	Switch off ignition
	Filling
10	Screw drain screw (5) onto retarder	 Only on vehicles with code (BA9) Voith secondary retarder R 115.
			*BA20.20-N-1004-01E
		Grease new sealing ring lightly.	*BR00.45-Z-1062-06A
11	Screw drain screw (6) onto heat exchanger (7)	 Only on models fitted with code (BA1) Performance-optimized Voith retarder.
			*BA43.30-N-1015-01E
		Grease new sealing ring lightly.	*BR00.45-Z-1062-06A
12	Tighten drain plug (4) on cylinder crankcase	 Replace sealing ring.
			*BA01.40-N-1005-01U
13	Screw drain screw (2) onto radiator and remove drain hose		*BA20.20-N-1003-01E
14	Check coolant for soiling	 If heavily contaminated the coolant generally has to be replaced, if necessary: 
		Degrease and decalcify cooling system.	AR20.00-W-1030C
15	Check coolant with anti-freeze tester	 If antifreeze protection is too low, correct antifreeze protection share or replace coolant.
			*BF20.00-N-1001-01B
16	Pour in coolant
 Danger!	Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
17	Start engine and bleed cooling and heating system	 Run engine for about 5 minutes at varying rotational speeds. Top off coolant constantly to the bottom edge of the filler neck.
18	Turn off engine
19	Screw on cap (1)
20	Inspecting cooling system for leaks	 Visual inspection
21	Install soundproofing on frame below
22	Close maintenance flap

 Crankcase, timing case cover, end cover

Number	Designation			Engine 457.9


BA01.40-N-1005-01U	Coolant drain plug to crankcase	M181.5	Nm	60

 Radiator, coolant hoses

Number	Designation		Engine 457.9


BA20.20-N-1003-01E	Coolant drain plug to radiator	Nm	4
BA20.20-N-1004-01E	Coolant drain plug to connection of retarder	Nm	25

 Retarder

Number	Designation		Models 374, 375, 930, 932, 933, 934, 940, 942, 943, 944, 950, 952, 953, 954, 958 with Code BA1


BA43.30-N-1015-01E	Coolant drain plug to heat exchanger	Nm	25

 Engine cooling system

Number	Designation			Engine 457.9 without code BA1 or BA9	Engine 457.9 with code BA1	Engine 457.9 with code BA9


BF20.00-N-1001-01B	Coolant	Total filling capacity	Liters	33,5	37,0	40,0
		Anticorrosion/antifreeze agent down to -37 °C	Liters	17,0	18,5	20,0
		Anticorrosion/antifreeze agent down to -45°C	Liters	18,5	20,5	22,0
		Specifications for Operating Fluids	Sheet	BB00.40-P-0310-01A	BB00.40-P-0310-01A	BB00.40-P-0310-01A
			Sheet	BB00.40-P-0325-02A	BB00.40-P-0325-02A	BB00.40-P-0325-02A
			Sheet	BB00.40-P-0325-05A	BB00.40-P-0325-05A	BB00.40-P-0325-05A

Repair materials

Number	Designation	Order number
BR00.45-Z-1062-06A	Lubricating grease, Olista Longtime, DB supply specification 6804.60	A 001 989 36 51 10

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