Disconnect/connect coolant hoses at radiator

AR20.20-S-3865-09S

Disconnect/connect coolant hoses at radiator

 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

Engine

274, 622, 642, 651

1

Pull catch spring (1) on both sides until engagement in the respective opening position (arrows).

 Do not bend or deform the catch springs (1).
Correct locking upon connecting the coolant hose (2) will no longer be possible otherwise.

2

Remove coolant hose (2).

 Installation: Replace sealing ring.

3

Install in the reverse order.