Empty coolant in water reservoir for leakage

AP08.50-S-0003EV

Empty coolant in water reservoir for leakage

13.02.2020

Model

447 with engine 780.7

1

Screw plug

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

 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

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

Drain water reservoir

1

Remove the vacuum pump.



AR43.05-S-0001F

2

Remove screw plug (1) and completely drain off coolant in water reservoir.

 To do so, place a suitable receptacle under the screw plug (1).

3

Screw-in new screw plug (1) with new sealing ring.


Replace screw plug (1).
Otherwise, this may lead to leakage and consequential damage.

 Screw plug, water reservoir to housing

*BA08.10-N-1003-01EV

4

Install the vacuum pump.



AR43.05-S-0001F

5

Confirm conducted operations in maintenance booklet or in Digital Service Booklet (DSB).

 Electric motor

Number

Designation

Engine 780.701/702 in model 447

BA08.10-N-1003-01EV

Screw plug, water reservoir to housing

Nm

30