Remove/install coolant pump

AR20.10-P-1271MRI

Remove/install coolant pump

11.06.2019

Engine

264 in model 205, 253

Shown on engine 264 in model 205

1

Bolts

2

Coolant hose

3

Bracket

4

Electrical connectors

M75/11

Electric coolant pump

Shown on engine 264 in model 253

2

Coolant hose

6

Bracket

5

Bolts

M75/11

Electric coolant pump

 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 avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

Notes on coolant level

AH20.00-P-1142-01CW

 

Remove/install

1

Remove the coolant thermostat.

AR20.10-P-2461MRI

2

Remove right charge air line.

AR09.41-P-6817MRI

3

Remove coolant hose (2) from electric coolant pump (M75/11).

 Hose clamp pliers

*454589003700

4.1

Remove bracket (3) from electric coolant pump (M75/11).

Engine 264 in model 205

 Bolt, bracket for electric line to coolant pump

*BA20.10-P-1002-01CA

4.2

Remove screws (5) and remove bracket (6).

Engine 264 in model 253

Topical note

Notes on threaded connections fastened using a tightening angle-based tightening process

AH00.00-P-0020-01A

 Bolt, support to support/exhaust gas turbocharger

*BA09.40-P-1012-02C

5

Release and disconnect the electrical connections (4).

6

Unclip electric lines from electric coolant pump (M75/11).

7

Remove screws (1) and remove electric coolant pump (M75/11).

 Bolt, coolant pump to crankcase/oil pan

*BA20.10-P-1001-01CA

8

Install in the reverse order.

 Turbocharger

Number

Designation

Engine 264

BA09.40-P-1012-02C

Bolt, support to support/exhaust gas turbocharger

Stage 1

Nm

15

Stage 2

°

90

 Coolant pump, coolant thermostat

Number

Designation

Engine 264

BA20.10-P-1001-01CA

Bolt, coolant pump to crankcase/oil pan

Nm

20

 Coolant pump, coolant thermostat

Number

Designation

Engine 264

BA20.10-P-1002-01CA

Bolt, bracket for electric line to coolant pump

Nm

9