Remove/install coolant pump

AR20.10-S-1271PS

Remove/install coolant pump

18.02.2020

Engine

642 in model 470, 471

Modification notes

15.04.2019

Method extended

Operation step 1

15.04.2019

Method changed, repair material references, added.

Operation steps 7, 8

1

Coolant pump

2

Bolts

 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

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

 

Remove/install

1

Remove front section of the bottom engine compartment lining.

AR61.20-S-1105P

 Installation: Install front section of the bottom engine compartment lining only after the leak test.

2

Drain off coolant.

AR20.00-S-1142PS

3

Remove mixer housing.

AR09.20-S-1320PS

4

Remove poly-V-belt.

AR13.22-S-1202PS

5

Remove screws (2).

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

 Bolt, coolant pump to crankcase

*BA20.10-N-1001-01PS

6

Remove coolant pump (1).

 Installation: Replace seal.



Clean

7

Clean sealing surface on the coolant pump (1).

If a new coolant pump (1) is not installed.


Do not use any sharp-edged tools or abrasive paper.
The sealing surface will otherwise be damaged.

Loctite 7200

*BR00.45-Z-1038-04A

Loctite 7063 (400 ml) cleaning spray

*BR00.45-Z-1046-04A

8

Clean sealing surface on crankcase.


Do not use any sharp-edged tools or abrasive paper.
The sealing surface will otherwise be damaged.

Loctite 7200

*BR00.45-Z-1038-04A

Loctite 7063 (400 ml) cleaning spray

*BR00.45-Z-1046-04A

9

Install in the reverse order.



Check

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

10

Perform engine test run; in this connection, check engine cooling system for proper operation and leak tightness.

 Visual inspection only.

 Coolant pump, coolant thermostat

Number

Designation

Engine 642 in model 470, 471

BA20.10-N-1001-01PS

Bolt, coolant pump to crankcase

Nm

10

Repair materials

Number

Designation

Order number

BR00.45-Z-1038-04A

Loctite 7200

Henkel AG & Co. KGaA
http://www.loctite.de

BR00.45-Z-1046-04A

Loctite 7063 (400 ml) cleaning spray

A 001 986 71 71 09