Remove/install coolant pump

AR20.10-P-1271OLF

Remove/install coolant pump

27.03.2014

ENGINE

651 in MODEL 222

1

Screw/bolts

4

Bracket

2

Coolant pump

5

Screw/bolts

3

Vacuum hose

M56

Vacuum pump

 Danger !

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

 

Remove/install

1

Drain coolant at radiator

AR20.00-P-1142LF



Notes on coolant

AH20.00-N-2080-01A

2

Remove engine cover

 Installation: Ensure correct seating.

3

Remove poly-V belt

AR13.20-P-0001OLF

4

Detach vacuum hose (3) from coolant pump (2)

5

Remove screw/bolts (5), detach vacuum pump (M56) together with bracket (4) and lay with attached lines to one side

 M61

*BA00.10-P-1002-04A

6

Remove screw/bolts (1) and take off coolant pump (2)

 Collect escaping coolant in a suitable container.

 Installation: Replace seal.

 Bolt, coolant pump to major assembly carrier

*BA20.10-P-1010-01X



Clean

7

Clean coolant pump sealing surfaces (2) and major assembly carrier using a lint-free cloth

8

Install in the reverse order

9

Pour in coolant and ventilate engine cooling system

AR20.00-P-1142LF



Check

10

Check engine cooling system for leaktightness

AR20.00-P-1010LF

 Danger !

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

11

Perform engine test run and check coolant pump (2) for leaktightness

 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 651

BA20.10-P-1010-01X

Bolt, coolant pump to major assembly carrier

Nm

9