Water Pump: Service and Repair

Replacing the coolant pump

Removing the coolant pump





Caution! Remove the ignition key.

- Remove the cap for the expansion tank.
- Remove the splash guard under the engine.
- Position a container under the engine drain cock. Drain the engine coolant.
Avoid skin contact with the coolant.
- Transfer the container to the radiator draining tap and drain off the remaining coolant.
- Close the nipples.
- Install the splashguard under the engine.

Position the engine according to the marking





Remove
- the cross stay between the suspension turrets
- the servo reservoir and the expansion tank and place them on top of the engine

Warning! Ensure that no power steering fluid is spilled. It is extremely flammable.

- the auxiliaries belt
- the front camshaft belt cover
Raise the car.
- the right front wheel
- the nuts for the cover in the right fender liner.
Turn the crankshaft clockwise until the markings on the crankshaft and camshaft pulley correspond.
Turn the crankshaft a further 1/4 of a turn clockwise, then back counter-clockwise until the markings correspond.
Remove the upper camshaft belt cover.

Removing the timing belt




Slacken off the belt tensioner.
Slacken off the belt tensioner center screw slightly.
Hold the center screw secure and turn the eccentric on the tensioner with a 6 mm (0.24") allen key clockwise to the 10 o'clock position.
Remove the camshaft belt.

Remove the coolant pump





Remove the screws
- Tap the pump wheel with the shaft of a hammer and remove the pump.
- Clean the gasket faces thoroughly.

Replace the coolant pump





Install:
- a new gasket
- a new pump.
Tighten the screws crosswise to 17 Nm (12.5 lb.ft).

Installing the camshaft belt





Install the belt in the following order:
- crankshaft
- idler pulley
- intake camshaft pulley
- exhaust camshaft pulley
- water pump
- belt tensioner.

Tension the timing belt




This adjustment is to be made with a cold engine. A suitable temperature is approximately 20°C/68°F.
At a higher temperature, for example with a warm engine or a higher ambient temperature, the needle is further to the right.
The position of the needle when aligning the camshaft belt tensioner at different engine temperatures is shown in the illustration.





Tension the timing belt as follows
- Carefully turn the crankshaft clockwise until the camshaft belt is tensioned. The belt should be tight between the intake camshaft pulley, idler pulley and crankshaft.
- Hold the belt tensioner center screw secure and turn the eccentric on the belt tensioner counter-clockwise until the tensioner needle passes the marked position.
Then turn the eccentric back so that the indicator reaches the marked position in the center of the window.
- Secure the eccentric and tighten the center screw to 20 Nm (14.8 lb.ft).
Check that the needle is in the correct position.

Check





Checking markings:
- press the belt to check that the indicator on the tensioner moves easily.
- install the upper timing belt cover.
- turn the crankshaft 2 turns and check that the markings on the crankshaft and camshaft pulley correspond.
- also check that the indicator on the belt tensioner is within the marked area.

Reinstall





Reinstall the removed components:
- the upper camshaft belt cover
- the front camshaft belt cover.
Tighten to 12 Nm (8.9 lb.ft)
- install the auxiliaries belt
- reinstall the servo reservoir and expansion tank.
Ensure that the hoses are correctly positioned
- the cross member. Tighten the screws at the suspension turret to 50 Nm (36.9 lb.ft) and the screw for the engine bracket to 80 Nm (59.0 lb.ft)
- the cover in the fender liner
- the wheel according to Installing wheels Service and Repair.
Fill the cooling system with Volvo original coolant.
Wipe clean and check the engine compartment.

Checking work

Function test
- Warm up the engine so that the thermostat opens.
- Top up the cooling system if necessary.
Check for leaks.