How to install a timing belt
You can install the timing belt in few steps.
Make sure the timing marks are properly aligned
Crankshaft pointer at TDC
Distributor rotor aligned with timing mark on distributor housing
Camshaft pulley timing pointer aligned with mark on engine block
Place the new belt over the pulleys, but be careful not to force it. Don't reinstall a used timing belt.
Loosen the tensioner adjustment bolt slowly, so that it can swing back against the belt. Be careful to ease the tensioner into position. Do not allow it to 'strike' the belt. Make sure the tensioner spring is engaged properly.
If there is no spring-loaded tensioner, tension the belt according to the vehicle manufacturer’s recommendations.
Rotate crankshaft (in normal rotation) at least two complete turns to remove any slack in the belt and to allow the teeth of the belt to seat themselves perfectly in the pulley grooves.
Loosen the tensioner and re-tension the belt according to the vehicle manufacturer’s recommendations. When the drive has a fixed tensioner, check the tension with the Gates STT-1 sonic tension tester. Torque the tensioner adjustment and pivot bolts to the manufacturer’s recommended torque setting.
Reinstall all of the parts that were removed. Reinstall the timing belt cover. All bolts must be torqued to the manufacturer’s recommended torque settings.
Reconnect the battery earth cable.
Start the engine, check the ignition timing and make any necessary adjustments.