Remove/install fan unit

AR08.50-S-0100F

Remove/install fan unit

17.02.2020

Engine

780.701/702 in model 447

1

Upper air duct segment

2

Electrical connector

3

Right air duct segment

4

Left air duct segment

5

Vent line

9

Coolant line

13

High-voltage battery cooler

6

Electric motor cooler

10

Coolant line

14

Electrical connector

7

Elbow fitting

11

Fan unit

15

Bracket

8

Bracket

12

Elbow fitting

16

Coolant pump

11

Fan unit

17

Retaining clips

 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

 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

 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

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 cooling the electric motor.

AR08.50-S-0020F

2

Drain coolant for 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

3

Remove top front module crossmember.

AR88.30-S-1940E

4

Unclip top air duct segment (1) and remove.

5

Disconnect electrical connector (2) from outside temperature sensor.

6

Unclip right air duct segment (3) and left air duct segment (4) and remove.

7

Remove bleed line (5) from electric motor cooler (6) and seal openings with suitable stop plugs.

 Record plug

*129589009100

8

Remove elbow fitting (7) from electric motor cooler (6) and seal openings with suitable protective covers.

AR20.20-P-7441-01RQ

 Collect escaping coolant.

 Set of protective covers

*001589019100

9

Unclip bracket (8) and remove.

 Installation: Hook coolant hose on bracket (8).

10

Unclip coolant lines (9, 10) from the retaining clamps (17) on the fan unit (11).

11

Tilt radiator unit toward the front.

 Installation: Ensure that the bottom elastomer bearings are positioned correctly.

12

Remove elbow fitting (12) from the high-voltage battery cooler (13) and seal openings with suitable protective covers.

AR20.20-P-7441-01RQ

 Collect escaping coolant.

 Set of protective covers

*001589019100

13

Disconnect electrical connector (14) from the fan unit (11).

14

Unclip bracket (15) of the coolant pump (16) and place to one side.

15

Release left and right fan unit (11) from the electric motor cooler (6) and remove upward.

 Installation: Insert fan unit (11) in the guides of the electric motor cooler (6).

16

Detach retaining clamps (17) from the fan unit (11).

If a new fan unit (11) is installed.

17

Install in the reverse order