Remove/install coolant pump

AR20.10-S-1271PB

Remove/install coolant pump

18.02.2020

Model

470 with engine 200

1

Belt pulley

2

Coolant pump

3

Screw

4

Screw

5

Screw

6

Screw

7

Seal

 Danger

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.

AS00.00-Z-0010-01A

 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

Topical note

Notes on coolant

AH20.00-N-2080-01A

Notes on coolant level

AH20.00-P-1142-01CW

 

Remove/install

1

Drain off coolant

AR20.00-S-1142P

2

Remove fan

AR20.40-S-5614PB

3

Relieve poly-V belt, and remove from belt pulley (1) of coolant pump (2)

AR13.22-S-1202PB

4

Remove belt pulley (1) of coolant pump (2)

5

Remove coolant pump (2)

 To do this, remove screws/bolts (3, 4, 5, 6).
Collect escaping coolant using suitable vessel.

 Installation: Install coolant pump (2) with new seal (7).
Screw in and tighten screws/bolts (3, 4, 5, 6) in numerical sequence.

 Screw, coolant pump to thermostat housing

*BA20.10-N-1001-01PB



Clean

6

Clean sealing surface of coolant pump (2) at crankcase

Loctite 7063 (400 ml) cleaning spray

*BR00.45-Z-1046-04A

7

Clean sealing surface of coolant pump (2)

When reusing removed coolant pump (2).

Loctite 7063 (400 ml) cleaning spray

*BR00.45-Z-1046-04A



Check

8

Check bearings of coolant pump (2) for ease of movement, axial and radial play (arrows)

When reusing removed coolant pump (2).

Depending on findings



Replace coolant pump (2).

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

Check for leak tightness with engine running

 Visual inspection only.

 Coolant pump, coolant thermostat

Number

Designation

Engine 200 in model 470

BA20.10-N-1001-01PB

Screw, coolant pump to thermostat housing

Nm

25

Repair materials

Number

Designation

Order number

BR00.45-Z-1046-04A

Loctite 7063 (400 ml) cleaning spray

A 001 986 71 71 09