Water Pump: Service and Repair

WM 195019 Removing and installing coolant pump on DFI engines

Technical values





Preliminary work

1. Drain the cooling system. => 193817 Draining and filling with coolant on DFI engines (includes bleeding) - section on "Draining"
2. Remove intake pipe. => 243519 Removing and installing air box for throttle housing on DFI engines (intake pipes upstream of throttle valve) - section on "Removing"

Removing coolant pump

1. Loosen drive belt around the water pump. For details, see => 137819 Removing and installing drive belt on V6 DFI engines - section on "Removing"
2. If the pulley has to be removed in order to replace the water pump, counter the pulley using a commercially available mandrel or screwdriver and then loosen the screws on the pulley.
3. Turn the drive wheel for the coolant pump in such a way that the fastening screws can be reached through the holes in the pulley -arrows-.





Fastening screws for coolant pump

4. Pull coolant pump out of the crankcase.





Coolant pump

Installing coolant pump

1. Clean sealing surfaces and check the condition of the seal that is stuck to the coolant pump for signs of damage => O-ring for coolant pump. If the seal is leaking or damaged, replace the coolant pump.





O-ring for coolant pump

2. Move coolant pump into installation position.
3. Screw in and tighten the three fastening screws.=> Tightening torque: 8 Nm (6 ftlb.)





4. Fit pulley if necessary. => Tightening torque: 20 Nm (15 ftlb.)

Subsequent work

1. Fit drive belt. => 137819 Removing and installing drive belt on V6 DFI engines - section on "Installing"
2. Install intake manifold. => 243519 Removing and installing air box for throttle housing on DFI engines (intake pipes upstream of throttle valve) - section on "Installing"
3. Fill and bleed the cooling system according to instructions. => 193817 Draining and filling with coolant on DFI engines (includes bleeding) - section on "Filling"