Remove/install coolant pump

AR20.10-P-1271MC

Remove/install coolant pump

22.7.10

 

Remove/install

 Danger!

Risk of injury to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning caused by 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

1

Drain coolant at radiator

AR20.00-P-1142H



Notes on coolant

AH20.00-N-2080-01A

2.1

Remove fan shroud

Model 216, 221 except 216.379, 221.179

AR20.40-P-6800SZ

Model 216.379, 221.179

AR20.40-P-6800SXM

Model 215.376, 220.176, 230 without code (P99) Special model "AMG Black Series"

AR20.40-P-6800AC

Model 215.379, 220.179

AR20.40-P-6800IM

2.2

Remove fan unit

Model 230 with code (P99) Special model "AMG Black Series"

AR20.40-P-5050RBS

3

Slacken bolts (1) for the pulley (2) at coolant pump (3)



*BA20.10-P-1002-01C

4

Remove poly-V belt

Model 215, 220, 230

AR13.22-P-1202L

Model 216, 221

AR13.20-P-0001SZ

5

Detach belt pulley (2) from coolant pump (3)

6

Remove coolant hoses (4, 5) from coolant pump (3)

 Inspect condition of coolant hoses (4, 5) and hose clamps.

 Installation: Replace if required.

7

Remove belt pulley/vibration damper (9)

AR03.30-P-1600L

8

Detach guide pulley (6) from front cover.



*BA01.30-P-1002-01G

9

Detach guide pulley (10)



*BA01.40-P-1006-01C

10

Remove bolts (7) and take off coolant pump (3)

 Installation: Install new seal (8).

 Installation: Observe length of bolts and tightening sequence:

Bolt plan for coolant pump (3)

AR20.10-P-1271-03L



*BA20.10-P-1004-01C

11

Install in the reverse order

 Danger!

Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running

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

AS00.00-Z-0005-01A

12

Inspect cooling system for leaks

Model 215, 220, 230

AR20.00-P-1010HA

Model 216, 221

AR20.00-P-1010SX

Number

Designation

Engine 275

BA01.30-P-1002-01G

Bolt, guide pulley to front cover on right

M8

Nm

35

Number

Designation

Engine
275, 285

BA01.40-P-1006-01C

Bolt, pulley to timing case cover

Nm

35

Number

Designation

Engines
137, 275

BA20.10-P-1002-01C

Belt pulley on coolant pump

Nm

8

BA20.10-P-1004-01C

Coolant pump on timing case

M7

Nm

14