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ENGINE - Timing Belt and Timing Belt B 11A-37 <When using MUT-II> (1) Connect the special tool (MB991668) to the MUT-II. (2) Connect the special tool (MB991704) to the MUT-II and the battery. (3) Rotate the crankshaft clockwise for two rounds to position No.1 cylinder at compression TDC and check that timing marks of each sprocket are aligned with each other. (4) Select “Belt Tension Measurement” from the menu screen of the MUT-II. (5) Hold the special tool (MB991668) to the middle of the belt between sprockets (at the place indicated by the arrow) as shown in the illustration about 10 - 20 mm away from the rear surface of the belt and so that it is perpendicular to the belt (within an angle of ±15_). (6) Gently tap the middle of the belt between sprockets (the place indicated by the arrow) with your finger as shown in the illustration and check that the vibration frequency of the belt is within the standard value. 1) If strong gusts of wind blow against the microphone or if there are any loud sources of noise nearby, the values measured by the microphone may not correspond to actual values. 2) If the microphone is touching the belt while the measurement is being made, the values measured by the microphone may not correspond to actual values. <When checking the deflection> Apply a force of approx.100N to the middle (arrow part) of pulley shown in the figure, and check that the deflection is within the standard value. 3. If it is outside the standard value, re-adjust belt tension. MB991668 10 - 20 mm 15_ 15_ Gently tap with your finger Deflection Approx. 100 N |