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Home >> Mitsubishi >> 2010 >> Lancer ES, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 42 (Engine Mechanical - Lancer Evolution) >> On-Vehicle Service >> Auto-TENSIONER Check >> Operation Check

Operation Check

WARNING: This page is about a different car, the 2012 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.

Required Special Tool: 

MB992278: Belt tension release wrench

  1. Stop the engine from the idle state.
  2. Remove the radiator condenser tank. (Refer to RADIATOR ).
  3. Check that the drive belt is not protruding from the pulley width of the auto-tensioner.
  4. Remove the drive belt (Refer to <<A>> DRIVE BELT REMOVAL  ).
    WARNING: Always work from above when releasing the tension of the auto-tensioner. When you try to gain access from underneath the vehicle, you will experience difficulty, thus causing the tool to be dropped off.
    CAUTION: To work at the optimum angle, you must choose a most suitable box-type wrench is applied to the special tool.
    WARNING: Be sure to set the box-type wrench and the special tool MB992278 to the hexagonal parts securely to prevent the tool from falling off because the tension of the auto-tensioner is high.
  5. Install special tool MB992278 and a box-type wrench at the optimum angle.
  6. Check that no binding is present by turning the auto-tensioner in the left and right directions.
  7. If there are any problems in the procedure 3 or 6, replace the auto-tensioner. (Refer to <<D>> AUTO-TENSIONER REMOVAL  ).
  8. Install the drive belt. (Refer to >>B<< DRIVE BELT INSTALLATION  ).
  9. Install the radiator condenser tank. (Refer to RADIATOR ).
    Fig 1: Turning Auto-Tensioner
    G06468444Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.