Remove/install coolant pump bearing housing

AR20.10-P-0002MFF

Remove/install coolant pump bearing housing

29.11.2019

Engine

654 in model 118, 177, 247

1

Coolant pump bearing housing

2

Guide pulley

3

Screw

4

Screws

Shown on model 177

5

Upper engine cover

6

Air intake line

7

Charge air 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

 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 coolant

AH20.00-N-2080-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

 

Remove/install

1

Remove upper engine cover (5).

AR01.10-P-2405MFF

 Installation: Do not install upper engine cover (5) until after the leak test.

2

Remove air intake line (6).

3

Remove charge air hose (7) and seal openings with protective covers.

AR09.41-P-1311-01AL

 Set of protective caps

*001589029100

4

Drain off coolant.

AR20.00-P-1142MFF

 Installation: Only install lower engine compartment paneling after leak test.

5

Remove guide pulley (2).

AR13.20-P-0015MFF

6

Remove coolant support from the coolant thermostat and place to one side.

AR20.10-P-2461MFF

7

Remove screw (3).

 Bolt, bearing housing/belt pulley to coolant pump

*BA20.10-P-1003-01BA

8

Lift vehicle with lifting platform.

AR00.60-P-1006A

9

Remove screws (4).

 Bolt, bearing housing/belt pulley to coolant pump

*BA20.10-P-1003-01BA

10

Remove coolant pump bearing housing (1) downwards and collect escaping coolant using a suitable container.

 Installation: Replace seal.

 Assembly tool

*000589936300

11

Clean sealing surfaces with a lint-free rag.

12

Install in the reverse order.

 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

13

Carry out engine test run and check engine for proper leak tightness and leak tightness.

14

Install lower engine compartment lining.

AR61.20-P-1105MFE

15

Install top engine cover (5).

AR01.10-P-2405MFF

 Coolant pump, coolant thermostat

Number

Designation

Engine 654

BA20.10-P-1003-01BA

Bolt, bearing housing/belt pulley to coolant pump

Nm

8