Remove/install coolant circuit expansion reservoir for electric motor cooling system

AR08.50-S-0003F

Remove/install coolant circuit expansion reservoir for electric motor cooling system

18.12.2019

Engine

780.701/702 in model 447

Shown with engine 780.701

1

Expansion reservoir

2

Cap

3

Vent line

4

Electrical connector

5

Coolant hose line

6

Bracket

 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 coolant

AH20.00-N-2080-01A

 

Remove/install

1

Remove cap (2) of expansion reservoir (1).

 Turn cap (2) of the expansion reservoir (1) counterclockwise only up to the safety catch and relieve overpressure. Then unscrew cap (2).

2

Clamp off coolant hose line (5).

 Clamp

*000589543700

3

Extract coolant from expansion reservoir (1).

Notes on coolant level for electric motor cooling system

AH08.50-S-0050-01F

 Electric drive cooling system

*BF08.50-N-1001-01F

 Hand pump

*210589007100

4

Release and disconnect electrical connector (4).

5

Remove bleed line (3) from expansion reservoir (1).

AR20.20-P-7441-01RQ

6

Seal openings with suitable stop plug.

 Record plug

*129589009100

7

Remove coolant hose line (5) from expansion reservoir (1).

AR20.20-P-7441-01RQ

 Collect escaping coolant.

 Commercially available devices/tools
Collecting pan

8

Seal openings using suitable protective covers.

 Set of protective caps

*001589009100

9

Turn expansion reservoir (1) in direction of arrow (arrow A) and remove upwards from bracket (6).

 WIS Service Media
wsm://04_ 201800_33

10

Install in the reverse order.



Check

11

Check cooling system for electric motor in area of expansion reservoir (1) for leaks.

AR08.50-S-0010F

 Cooling system

Number

Designation

Engine 780.701/702 in model 447

BF08.50-N-1001-01F

Electric drive cooling system

Cooling system of high-voltage battery and vehicle interior

Filling capacity

Liter

 10

Cooling system of electric motor

Filling capacity

Liter

 5

For both cooling systems, entire filling capacity, in the workshop

Filling capacity

Liter

 15

Antifreeze/water

Down to -37 °C

%

50/50

Coolant specifications

BB00.40-P-0310-01A

Sheet

BB00.40-P-0325-05A