Timing Belt: Adjustments

How to adjust timing belt tension





1. Tension setting (While auto tensioner is not operating: And set pin being kept installed.).
1) After rotating crankshaft 1/4 revolution reversely, rotate it clockwise to position No.1 cylinder at TDC. Then, loosen the center bolt and give the belt 50 kg-cm of tension with tensioner pulley socket (Two pins are attached) and torque wrench. While maintaining this state, tighten the center bolt to the standard torque.
Center bolt standard torque 43 - 55 Nm (430 - 550 kg-cm, 31.72 - 40.57 ft. lbs.)





2) Pull out the auto tensioner fixing pin.

2. How to check tension (While auto tensioner is operating: and fixing pin being un-installed.)
1) After rotating crankshaft 2 revolutions clockwise to position No.1 cylinder at TDC, wait for about 5 minutes, and measure the amount of protruding of the auto tensioner rod.

Caution: This is "leak down" time for the auto tensioner rod to protrude 1mm when tension caused by rotation of the crankshaft has changed.





2) Check if the amount of rod protruding is in the range of 3.8 - 4.5 mm.

3. Recheck if each sprocket is within the specified range.

Notice: If it is not within the specified range, repeat from procedure 6 as service procedure of timing belt and auto tensioner installation method. Refer to Timing Belt; Service and Repair.