Drive Belt Inspection

Engine. Lexus Gs430, Gs300. Uzs190 Grs190
3Uz-Fe Engine Mechanical. Lexus Gs430, Gs300. Uzs190 Grs190

  1. INSPECT V-RIBBED BELT

  2. INSPECT V-RIBBED BELT TENSIONER ASSEMBLY

Drive Belt -- Inspection



1. INSPECT V-RIBBED BELT


Lexus Gs430, Gs300. Uzs190 Grs190
HINT:
Use of the automatic tensioner has made tension and flexibility measurements unnecessary.

  1. Check that the indicator mark on the automatic tensioner is within the A range shown in the illustration.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Drive Belt Inspection

  1. When the mark is in the range B, replace the belt with a new one.
    If the result is not as specified, replace the belt.

    HINT:
    1. After installing the V-belt, check that it fits properly in the ribbed grooves. Check with your hand to confirm that the belt has not slipped out of the grooves on the bottom of the crank pulley.
    2. A "new belt" is a belt which has been used for less than 5 minutes on a running engine.
    3. A "used belt" is a belt which has been used on a running engine for 5 minutes or more.
    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. Idle the engine and then stop the engine. Check that the drive belt is between the edges of the idler pulley.

  1. Remove the drive belt from the tensioner pulley.

  1. Turn the pulley, and check that the tensioner bearing moves smoothly and quietly.
    If necessary, replace the tensioner.

  1. Install the drive belt.