Remove/install coolant thermostat

AR20.10-P-2461MRH

Remove/install coolant thermostat

21.12.2018

Engine

264 in model 213, 238, 257

1

Coolant thermostat

2

Screws

3

Coolant hose

4

Coolant hose

5

Coolant hose

6

Electrical connector

7

Coolant hose

 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

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

 

Remove/install

1

Remove air intake pipe.

AR09.10-P-8131MRH

2

Drain off coolant.

Engine 264 in model 213, 238

AR20.00-P-1142MRH

Engine 264 in model 257

AR20.00-P-1142MSB

3

Release and disconnect electrical connector (6).

4

Remove the coolant line bracket from the coolant thermostat (1).

 M61

*BA00.10-P-1002-04A

5

Remove the coolant hoses (4, 5) from the coolant thermostat (1) and place to one side.

AR20.20-P-7441-01RQ

6

Remove the coolant hoses (3, 7) from the coolant thermostat (1) and place to one side.

 Hose clamp pliers

*454589003700

7

Remove screws (2).

 Bolt, coolant thermostat to coolant pump

*BA20.10-P-1003-01CA

8

Disassemble and remove the coolant thermostat (1) from the coolant pump.

 Installation: Replace sealing ring.

9

Install in the reverse order.

 Metric screws/bolts and nuts as per MBN 10 105, 10 143

Number

Designation

8.8

10.9

BA00.10-P-1002-04A

M61

Nm

9

13

 Coolant pump, coolant thermostat

Number

Designation

Engine 264

BA20.10-P-1003-01CA

Bolt, coolant thermostat to coolant pump

Nm

9