Remove/install coolant pump pump unit

AR20.10-P-1400OID

Remove/install coolant pump pump unit

18.12.2018

Engine

656 in model 167

1

Pump unit

2

Screws

3

Bracket

4

Screws

5

Switchover valve

6

Electrical wiring harness

7

Screws

8

Vacuum line

9

Screws

 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

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

 

Remove/install

1

Drain off coolant.

AR20.00-P-1142OID

2

Remove poly-V-belt.

AR13.22-P-1202OID

3

Unclip switchover valve (5) from bracket (3).

4

Remove screws (2, 4) and remove bracket (3).

 Screw, diesel particulate filter bracket to timing case

*BA49.10-P-1005-02T

 Bolt, diesel particulate filter bracket to crankcase

*BA49.10-P-1004-02T

5

Remove screws (7) of the electrical wiring harness (6) from the crankcase.

6

Remove vacuum line (8) from pump unit (1).

7

Remove screws (9).

 Screw, bearing housing/belt pulley to water pump

*BA20.10-P-1003-01BA

8

Remove pump unit (1) and catch escaping coolant using a suitable container.

 Installation: Replace seal.

9

Clean sealing surfaces with a lint-free rag.

10

Install in the reverse order.

 Coolant pump, coolant thermostat

Number

Designation

Engine 656

BA20.10-P-1003-01BA

Screw, bearing housing/belt pulley to water pump

Nm

8

 Exhaust system

Number

Designation

Model 167 with engine 656

BA49.10-P-1004-02T

Bolt, diesel particulate filter bracket to crankcase

M8

Nm

20

 Exhaust system

Number

Designation

Model 167 with engine 656

BA49.10-P-1005-02T

Screw, diesel particulate filter bracket to timing case

M8

Nm

25