Remove/install switchover valve in engine compartment for auxiliary circuit

AR08.50-D-0041TE

Remove/install switchover valve in engine compartment for auxiliary circuit

28.11.2019

Engine

780.703 in model 910

1

Switchover valve

2

Electrical connector

3

Nuts

4

Connection fitting

5

Connection fitting

6

Connection fitting

7

Electrical connector

 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

General information on handling vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system

AH00.00-Z-0300-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

 

Remove/install

1

Drain coolant of the auxiliary circuit.

AR08.50-D-0022TE

2

Remove ventilation box.

AR83.10-D-0010TS

3

Remove nuts (3).

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

4

Disconnect electrical connection (2).

5

Remove connection fitting (4) of the coolant line from the switchover valve (1).

AR08.50-P-0018-01EQ

 Collect escaping coolant. Seal connection fitting (4).

 Commercially available devices/tools
Collecting pan

 Set of protective covers

*001589019100

6

Remove connection fitting (5) of the coolant line from the switchover valve (1).

AR08.50-P-0018-01EQ

 Collect escaping coolant. Seal connection fitting (5).

 Commercially available devices/tools
Collecting pan

 Set of protective covers

*001589019100

7

Remove connection fitting (6) of the coolant line from the switchover valve (1).

AR08.50-P-0018-01EQ

 Collect escaping coolant. Seal connection fitting (6).

 Commercially available devices/tools
Collecting pan

 Set of protective covers

*001589019100

8

Remove switchover valve (1) until the electrical connector (7) is accessible.

9

Remove the switchover valve (1).

 For this purpose, disconnect electrical connector (7).

10

Install in the reverse order.