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Drive Belt Auto-tensioner Inspection

  1. Turn the ignition switch to ON (II), and make sure to turn the A/C switch off. Turn the ignition switch to LOCK (0).
  1. Check the position of the auto-tensioner indicator's pointer (A). Start the engine then check the position again with the engine idling. If the position of the indicator moves or fluctuates very much, replace the auto-tensioner.
  1. Check for abnormal noise from the tensioner pulley. If you hear abnormal noise, replace the tensioner pulley.

  1. Move the auto-tensioner within its limit with a wrench in the direction shown. Check that the tensioner moves smoothly and without any abnormal noise. If the tensioner does not move smoothly or if you hear abnormal noise, replace the auto-tensioner.

  1. Clamp the auto-tensioner (A) by using two 8 mm bolts (B) and a vise (C) as shown. Do not clamp the auto-tensioner itself.
  1. Set the torque wrench (D) on the pulley bolt, and align it as shown.
  1. Align the indicator (E) on the tensioner base with Max. belt position mark (F) on the tensioner arm by using the torque wrench, and measure the torque. If the torque value is out of specification, replace the auto-tensioner.
    NOTE: If the indicator exceeds the Max. belt position mark, recheck the torque.
    Auto-tensioner Spring Torque:
    20.6−25.2 N·m (2.10−2.25 kgf·m, 15.2−18.6 lbf·ft)