Drive Belt Inspection

Engine. Lexus Is250, Is220D. Gse20 Ale20
4Gr-Fse Engine Mechanical. Lexus Is250, Is220D. Gse20 Ale20

  1. INSPECT V-RIBBED BELT

  2. INSPECT V-RIBBED BELT TENSIONER ASSEMBLY

Drive Belt -- Inspection



1. INSPECT V-RIBBED BELT


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Engine Mechanical.Engine.Drive Belt Inspection

  1. Visually check the V-ribbed belt for excessive wear, frayed cords, etc.
    If any defect has been found, replace the V-ribbed belt.

    HINT:
    Cracks on the rib side of a V-ribbed belt are considered acceptable.
    If the V-ribbed belt has chunks missing from its ribs, it should be replaced.
    HINT:
    1. After installing the V-ribbed belt, check that it fits properly in the ribbed grooves. Check to confirm that the belt has not slipped out of the grooves on the bottom of the crank pulley by hand.
    2. A "new belt" is a belt which has been used for less than 5 minutes with the engine running.
    3. A "used belt" is a belt which has been used for 5 minutes with the engine running.
    4. After installing a new belt, run the engine for approximately 5 minutes and then recheck the tension.


2. INSPECT V-RIBBED BELT TENSIONER ASSEMBLY

  1. Check that nothing gets caught in the tensioner by turning it clockwise and counterclockwise.
    If a malfunction exists, replace the tensioner.