Pour in coolant and bleed engine cooling system

AR20.00-S-1142-03P

Pour in coolant and bleed engine cooling system

 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

Notes on coolant

AH20.00-N-2080-01A

Notes on coolant level

AH20.00-P-1142-01CW

Model

470 with engine 200

Model

470, 471 with engine 699

Modification notes

17.01.2019

Repair materials removed and filling capacity reference modified

Step 5

 Filling capacity for engine cooling system

Number

Designation

Engine 200 in model 470

Engine 699 in model 470, 471

BF20.00-N-1001-01PD

Coolant

Liter

 7,3

 11,1

Sheet

BB00.40-P-0325-07A

BB00.40-P-0325-07A

Shown with engine 699

1

Adapter

2

Control unit

3

Venturi nozzle

4

Supply valve

5

Drain valve

6

Feed hose

7

Coolant reservoir

8

Waste air hose

9

Compressed-air hose

Shown with engine 200

1

Adapter

2

Control unit

3

Venturi nozzle

4

Supply valve

5

Drain valve

6

Feed hose

7

Coolant reservoir

8

Waste air hose

9

Compressed-air hose

1.1

Typ 470, 471 mit Motor 699
Attach  adapter (1) to the coolant expansion reservoir.

1.2

Typ 470 mit Motor 200
Mount  adapter (1) on coolant filler neck.

2

Connect control unit (2) to the  adapter (1).

3

Connect venturi nozzle (3) to control unit (2).

4

Close feed valve (4) and drain valve (5).

5

It must   Pour coolant into the coolant reservoir (7).

 Make sure that there is more coolant in the coolant reservoir (7) than the engine cooling system maximum filling capacity.
Otherwise, air can enter the engine cooling system.

6

Connect feed hose (6) to coolant reservoir (7).

7

Connect waste air hose (8) in an empty, suitable container.

8

Connect compressed-air hose (9) to venturi nozzle (3) and apply compressed air.

9

Open drain valve (5).

10

Open feed valve (4) for a short time until the feed hose (6) has filled with coolant.

 A vacuum is created in the engine cooling system.

11

Close drain valve (5) as soon as the display of the control unit (2) is in the green area.

12

Remove compressed-air hose (9) from venturi nozzle (3) and observe whether the vacuum remains stable for 30 s.

If this is not the case,



Check engine hoses and connections. Repair if necessary and check again.

13

Open feed valve (4).

 The coolant flows into the engine cooling system.

14

Open drain valve (5) as soon as the coolant is no longer flowing into the engine cooling system.

 The remaining existing vacuum will be removed from the engine cooling system.

15

Remove control unit (2) along with all connections and  adapter (1).

16.1

Model 470, 471 with engine 699
  Adjust coolant level in coolant expansion reservoir.

16.2

Model 470 with engine 200
  Adjust coolant level in coolant filler neck and in coolant expansion reservoir.