Water Pump, Fuel-Driven Auxiliary Heater

Water pump, fuel-driven auxiliary heater

Note! The illustrations in this service information are used for different model years and/or models. Some variation may occur. However, the essential information in the illustrations is always correct.

Preparatory work

Draining the engine coolant




Remove the expansion tank cap.
Open the holder for the radiator hoses behind the engine to expose the lower radiator hose to the water pump.
Raise the vehicle.
Remove the shield under the vehicle. It is secured with 7 clips. See the illustration.
Install a hose on the nipple at the radiator. Feed the hose down to a container. Open the nipple and drain off the coolant.

Removal

Removing the water pump





Remove:
- the screw holding the water pump and rubber mounting. See the illustration
- the connector.
Pull the water pump forward a little.

Hint: Mark the location of the hoses at a suitable point on the water pump.

Install hose clips on both coolant hoses, as close to the water pump as possible. Position a container under the water pump.
Disconnect the hoses.

Installation

Note! For tightening torques, see Specifications. [1][2]Body and Frame.

Installing the water pump




The water pump for the engine coolant heater has a rubber-mounted mounting. The lower section is hooked onto the mounting bracket on the vehicle.

Install:
- the hoses using new hose clamps according to any markings. Remove the hose clips
- the water pump and mounting, 1 x M6. Tighten

Hint: Hook the lower reverse of the rubber mounting in the mounting. This facilitates locating the thread hole and correct mounting.

- the connector.
Close the drain nipple. Remove the hose.
Fill with coolant. Run the engine until the thermostat opens. Top up if necessary.

Finishing

Adjusting and checking
Test run the engine coolant heater and check its function. See: Fuel-powered preheater, checking Fuel-Powered Preheater, Checking.
Check for leakage from the coolant hoses.
Top up the coolant if necessary.

Installing the cover




Install the cover. It is secured with 7 clips. See the illustration.
Lower the vehicle.