Cooling pump - removal, inspection and refitting

Cooling, heating and ventilation systems / Cooling pump - removal, inspection and refitting

Removal
1 Drain the cooling system (see Chapter 1).

2 Where necessary, remove the air cleaner and air ducting as described in Chapter 4, and disconnect the battery negative lead.

3 Unbolt and remove the timing belt cover.

4 Turn the engine with a spanner on the crankshaft pulley bolt until the timing belt inner cover retaining bolt is visible through the camshaft sprocket hole. Unscrew and remove the bolt.

5 Align the timing marks and release the timing belt from the water pump and camshaft sprocket with reference to Chapter 2. Also unbolt and remove the camshaft sprocket.

6 Remove the bolts and withdraw the timing belt inner cover followed by the water pump.

Remove the sealing ring (see illustrations).

7.6a Removing the water pump

7.6b Removing the water pump sealing ring

Inspection
7 It is not possible to repair the water pump; if faulty it must be renewed. Clean the mating faces of the water pump and cylinder block.

Refitting
8 Refitting is a reversal of removal, but fit a new sealing ring and refer to Chapter 2 when fitting the camshaft sprocket and tensioning the timing belt. If a reconditioned coolant pump is being fitted, check if the number “5” is stamped on the mounting flange - if so, use an oversize sealing ring of 5 mm diameter. Fill the cooling system as described in Chapter 1.