Water Pump: Service and Repair

WM 195019 Removing and installing coolant pump

Tools





Preliminary work

1. Drain the cooling system. -> 193817 Draining and filling coolant Service and Repair
2. Remove intake port ahead of the throttle valve. -> 243519 Removing and installing air box for throttle housing 243519 Removing and installing cowl for throttle housing (Y-pipe)

Information

Component overview





Coolant pump









Tightening sequence for coolant pump

Removing coolant pump

Information

- The pictures shown in this document may differ from the original.

- However, this does not affect the validity and relevance of the pictures.

Information

- To ease removal, spray the pulley from the rear side with an anti-corrosion agent.

1. Loosen the three fastening screws on the coolant pump pulley. Block the pulley with a holder Nr.38 or brace Nr.193 if necessary or if the belt drive is removed.





Pulley

2. Detach drive belt from water pump. For details, see -> 137819 Removing and installing drive belt Service and Repair

NOTICE

Incorrect handling of pulley

- Risk of damage to pulley

-> The pulley is sensitive to impact. Do not prise off the pulley with a screwdriver.
-> Do not re-use a damaged pulley.

3. Unscrew the three loosened fastening screws on the pulley => Pulley and remove the pulley.
4. Unscrew the fastening screws => Coolant pump mounting -3- on coolant pump.





Coolant pump mounting





Coolant pump





5. Remove the coolant pump.





Removing coolant pump.

6. If the pump is stuck, loosen it by gently tapping with a plastic hammer. => Loosening coolant pump with a plastic hammer





Loosening coolant pump with a plastic hammer

Installing coolant pump

Information

- The tightening specifications for the basic engine are stored centrally. -> 1001IN Tightening torques, tightening sequences, assembly overviews [1][2]Specifications. Tightening torques and assembly instructions for other assemblies (e.g. chassis, electrics, transmission or body) or for peripheral engine equipment can be found in the corresponding documents.

1. Clean sealing faces. Fit coolant pump with new seal.





Coolant pump





2. Tighten fastening screws.





Tightening sequence for coolant pump

NOTICE

Incorrect handling of pulley

- Risk of damage to pulley

-> The pulley is sensitive to impact. Do not prise off the pulley with a screwdriver.
-> Do not re-use a damaged pulley.

3. Fit the pulley on the coolant pump. Screw in the three fastening screws by hand.
4. Tighten the three fastening screws on the coolant pump pulley. Block the pulley with a brace Nr.38 if necessary.





Belt pulley

Subsequent work

1. Fit drive belt. -> 137819 Removing and installing drive belt Service and Repair
2. Install intake manifold. -> 243519 Removing and installing cowl for throttle housing 243519 Removing and installing cowl for throttle housing (Y-pipe)
3. Fill and bleed the cooling system according to instructions. -> 193817 Draining and filling in coolant Service and Repair