ar0850d0100te

Remove/install fan unit

Type ar · topic 08.50 · version 0200 · 2019-12-23

Applies to: Engine 780.703 in model 910

Where it sits

Function group 1 Engine › 08 Electric drive, hybrid drive › 08.50 Temperature management — Series 910

EinPAS 16 Fuel/power supply to engine › 16.25 Cooling/heating high-voltage on-board electrical system/fuel cell › 16.25.40 Fan/fan clutch/fan drive — Series 910

Also applies to engines/gearboxes: 780 703

AR08.50-D-0100TE

Remove/install fan unit

28.11.2019

Engine

780.703 in model 910

Modification notes

28.11.2019

Work procedure and image displays revised

The whole document

Remove/install fan unit

D08.50-A018-79

1

Fan unit

7

High-voltage connection

2

Coolant line

8

Electrical connector

3

Retaining clips

9

Electrical line

4

High-voltage lines

10

Coolant line

5

Electrical wiring harness

15

Air duct segment

6

High-voltage connection

17

Electrical connector

Remove/install fan unit

D08.50-A019-79

10

Coolant line

12

Coolant hose line

14

Locking plug

11

Coolant hose line

13

Bracket

Remove/install fan unit

D08.50-A020-79

1

Fan unit

16

Electrical connector

10

Coolant line

19

Coolant hose line

15

Air duct segment

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 due to fan starting unexpectedly

Do not reach into the rotation or hazard area of the fan. Wear closed and close-fitting work clothes.

AS20.40-Z-0001-01A

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

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

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

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

Remove/install

1

Perform power disconnect of high-voltage on-board electrical system.

AR47.70-D-1000TE

2

Drain coolant at coolant radiator main circuit.

AR08.50-D-0023TE

3

Drain coolant from coolant radiator auxiliary circuit.

AR08.50-D-0022TE

4

Remove coolant line (2).

For this purpose, unclip coolant line (2) from retaining clips (3).

5

Lower vehicle.

6

Remove high-voltage lines (4).

For this purpose, remove retaining clips.

Installation: Check retaining clips for damage.

Clip remover

*452589016300

If damage exists,

Replace damaged retaining clips.

7

Remove electrical wiring harness (5).

To do this, detach the retaining clip.

Installation: Check retaining clips for damage.

Clip remover

*452589016300

If damage exists,

Replace retaining clip.

8

Release and disconnect high-voltage plug (6).

9

Release and disconnect high-voltage plug (7).

10

Disconnect electrical connector (8).

11

Remove electric line (9) at DC current charge-connection unit and place to one side.

Check ground lines for high-voltage on-board electrical system potential equalization

AR47.70-D-1020-01TE

To do this, undo screw/bolt.

Installation: Check electric line (9).

Screw, potential equalization ground line/protective ground conductor to DC current charge-connection unit

*BA47.70-N-1009-02TE

12

Disconnect electrical connector (17).

13

Place high-voltage lines (4), electrical wiring harness (5) and electric line (9) outside working area.

14

Remove coolant line (10) from fan unit (1).

For this purpose, remove coolant line (10) from retaining clip and place outside working area.

15

Remove coolant line (10) from coolant radiator auxiliary circuit.

AR08.50-P-0018-01EQ

Collect coolant which flows out.
Seal connections.

Commercially available devices/tools
Collecting pan

Set of protective covers

*001589019100

16

Remove coolant hose lines (11, 12, 19) from coolant radiator main circuit.

AR08.50-P-0018-01EQ

Collect coolant which flows out.
Seal connections.

Commercially available devices/tools
Collecting pan

Set of protective covers

*001589019100

Record plug

*129589009100

17

Detach bracket (13).

For this purpose, release bracket (13) (arrow A) and remove upwards out of guides (arrows B).

18

Release radiator unit.

For this purpose, remove locking plugs (14) at hood catch crossmember and release locks.

19

Remove air duct segment (15).


Carefully press radiator unit in direction of engine.
Otherwise damage may occur.

For this purpose, press radiator unit in direction of engine, release air duct segment (15) and remove.

Installation: Check air duct segment (15) for damage.

If damage exists,

Replace air duct segment (15).

20

Separate electrical connection (16).

21

Remove fan unit (1).

For this purpose, release locks (arrows C) and remove fan unit (1) upwards out of guides (arrows D).

22

Install in the reverse order.

High-voltage on-board electrical system potential equalization ground lines

Number

Designation

Engine 780.703 in model 910

BA47.70-N-1009-02TE

Screw, potential equalization ground line/protective ground conductor to DC current charge-connection unit

Nm

7

Remove/install fan unit
Remove/install fan unit
Remove/install fan unit

001 589 01 91 00

Set of protective covers

452 589 01 63 00

Clip remover

129 589 00 91 00

Record plug

Referenced documents