Carrying out the bleeding process for the low temperature circuit

AR20.00-P-1145-03R

Carrying out the bleeding process for the low temperature circuit

ENGINE

275, 279, 285

Shown on engine 275, 285

1

Connect venturi nozzle (6) with vacuum box (1) - connection (U) to connection (G).

2

Generate vacuum in vacuum box (1) - open valve (H).

3.1

ENGINE 275 in MODEL 215, 220, 230
ENGINE 285 in MODEL 240

Actuate circulation pump for low-temperature circuit. Switch on switch on the relay slot.

3.2

ENGINE 275 in MODEL 216, 221

Actuate circulation pump for low-temperature circuit over diagnostic system.

4

Generate vacuum in low-temperature circuit - open valves (C, D) and wait for 15 seconds.

5

Start venting process - open valve (O) for at least 5 minutes.

 The air in the coolant is removed by flushing the low-temperature circuit.

6

Observe the coolant flow in the area of the Y-fitting (arrow) during the flushing process. If the coolant is flowing free of bubbles after 5 minutes then the low-temperature circuit has been bled.

7

Stop coolant flow by first closing valve (O), switching off the switch for the circulation pump or actuating over the diagnostic system and then closing valves (C, D).

8

Remove vacuum - disconnect compressed air (Z) from venturi nozzle (6) connection (M).

9

Decouple connection (L) to tester cap. ENGINE 275, 285
 ENGINE 279