100K Water pump and drive belt

[dogsridewith]

Toyota also gives "Deflection" specs for new and used belts. But it is a meaningless number without prescribing the applied perpendicular force that causes the measured belt deflection.

[kevinj93]

Originally Posted by dogsridewith

Toyota also gives "Deflection" specs for new and used belts. But it is a meaningless number without prescribing the applied perpendicular force that causes the measured belt deflection.

My series 3 manual lists the deflection specifications in both metric and imperial measurements. On the longest section of the belt between the crankshaft pulley and alternator pulley there should be 12.5 to 13.5 mm (0.49 to 0.53 inches) deflection at the centre of the belt for 10 kg (22 pounds) of applied force.

The same measurement is listed for both 1NZ-FE and 2NZ-FE engines.