Drive Belt Auto-tensioner Inspection

Special Tools Required 

Belt tension release tool Snap-on YA9317 or equivalent, commercially available

1. Turn the ignition switch to ON (II), and make sure the A/C switch is OFF, then turn the ignition switch to LOCK (0).
2. Check the position of the auto-tensioner indicator (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 (see DRIVE BELT AUTO-TENSIONER REPLACEMENT ).
   Fig 1: Identifying Auto-Tensioner Indicator

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
3. Check for abnormal noise from the tensioner pulley. If you hear abnormal noise, remove the auto-tensioner, and replace the tensioner pulley.
4. Remove the drive belt (see DRIVE BELT INSPECTION ).
5. Move the auto-tensioner within its limit using the belt tension release tool in the direction shown, check that the tensioner moves smoothly and without any abnormal noise. If the tensioner does not move smoothly, or you hear abnormal noise, replace the auto-tensioner.
   Fig 2: Releasing Auto-Tensioner

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
6. Attach a torque wrench (A) to the pulley bolt. Align the indicator on the auto-tensioner housing with the edge of the indicator rib on the tensioner base by using the torque wrench, and measure the torque. If the torque is out of specification, replace the auto-tensioner.

   Auto-tensioner Spring Torque: 

   26.2 N.m (2.67 kgf.m, 19.3 lbf.ft) 

   Fig 3: Aligning Indicator On Auto-Tensioner Housing

   Courtesy of AMERICAN HONDA MOTOR CO., INC.