Remove/install switchover valve for coolant circuit of high-voltage battery cooling system in engine compartment · ar0850s0030f · Mercedes-Benz WIS

AR08.50-S-0030F

Remove/install switchover valve for coolant circuit of high-voltage battery cooling system in engine compartment

13.02.2020

Engine

780.701/702 in model 447

Modification notes

30.01.2020

Work procedure changed.

The whole document

Remove/install switchover valve for coolant circuit of high-voltage battery
cooling system in engine compartment

S08.50-A015-79

Shown with engine 780.702

1	Switchover valve	5	Coolant hose line
2	Electrical connector	6	Nuts
3	Coolant hose line	7	Electrical connector
4	Coolant hose line

 Danger	Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)	Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.	AS00.00-Z-0035-01A
 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 avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
Topical note	General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment		AH00.00-Z-0300-01A
Topical note	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
 	Remove/install
1	Drain coolant for cooling of high-voltage battery cooling system.	Engine 780.701 in model 447	AR08.50-S-0021F
		Engine 780.702 in model 447	AR08.50-S-0022G
2	Release and disconnect the electrical connector (2).
3	Remove coolant hose line (3) from switchover valve (1).		AR20.20-P-7441-01RQ
		 Collect escaping coolant. Close openings.
		 Commercially available devices/tools Collecting pan
		 Set of protective covers	*001589019100
4	Remove coolant hose line (4) from switchover valve (1).		AR20.20-P-7441-01RQ
		 Collect escaping coolant. Close openings.
		 Commercially available devices/tools Collecting pan
		 Set of protective covers	*001589019100
5	Remove nuts (6).
Topical note	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
6	Remove coolant hose line (5) from switchover valve (1).		AR20.20-P-7441-01RQ
		 Collect escaping coolant. Close openings.
		 Commercially available devices/tools Collecting pan
		 Set of protective covers	*001589019100
7	Remove the switchover valve (1).	 For this purpose, release and disconnect electrical connector (7).
8	Install in the reverse order.
	Check
9	Check high-voltage battery cooling system in area of switchover valve (1) for leaks.		AR08.50-S-0011F

001 589 01 91 00

Set of protective covers

Referenced documents

ah0000n000101a Notes on self-locking nuts and bolts
ah0000p500001a Notes on avoiding damage through contamination and foreign objects
ah0000z030001a General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment
ah5400p000101a Information on preventing damage to electronic components due to electrostatic discharge
ar0850s0011f Check high-voltage battery cooling system for leak tightness
ar0850s0021f Drain/fill coolant for high-voltage battery cooling system
ar0850s0022g Drain/fill coolant of auxiliary circuit
ar2020p744101rq Open, close coolant line coupling
as0000z003501a Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)
as2000z000101a Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.