Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 1998-2003 Approved FSM 06 timbel insp

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EM-20
                       ENGINE MECHANICAL    -   TIMING BELT
                                                                                               EM0B5-04


                                   INSPECTION
                                   1.     INSPECT TIMING BELT
                No!
                                   NOTICE:
                                    S     Do not bend, twist or turn the timing belt inside out.
                                    S     Do not allow the timing belt to come into contact with
                                          oil, water or steam.
                                    S     Do not utilize timing belt tension when installing or re-
                                          moving the mount bolt of the camshaft timing pulley.
                          EM3336
                                   If there are any defects, as shown in the illustrations, check
                                   these points:
                                   (a) Premature parting
                                           S    Check for proper installation.
                                           S    Check the timing cover gasket for damage and
                                                proper installation.
                                   (b) If the belt teeth are cracked or damaged, check to see if
                                          either camshaft is locked.
                                   (c) If there is noticeable wear or cracks on the belt face,
                                          check to see if there are nicks on the side of the idler
                                          pulley lock and water pump.
                                   (d) If there is wear or damage on only one side of the belt,
                                          check the belt guide and the alignment of each pulley.
                                   (e) If there is noticeable wear on the belt teeth, check timing
                                          cover for damage and check gasket has been installed
                                          correctly and for foreign material on the pulley teeth.
                                   If necessary, replace the timing belt.




                                   2.     INSPECT IDLER PULLEYS
                                   (a)    Visually check the seal portion of the idler pulley for oil
                                          leakage.
                                   If leakage is found, replace the idler pulley.




                          B00635



                                   (b) Check that the idler pulley turns smoothly.
                                   If necessary, replace the idler pulley.




                          P12604



2001 SIENNA (RM787U)

                                                       Author :            Date :                963
                                                                                               EM-21
                       ENGINE MECHANICAL   -   TIMING BELT

                                   3.    INSPECT TIMING BELT TENSIONER
                                   (a)   Visually check the seal portion of the tensioner for oil leak-
                                         age.
                                   HINT:
                                   If there is only the faintest trace of oil on the seal on the push
                                   rod side, the tensioner is all right.
                                   If leakage is found, replace the tensioner.

                          P18782



                                   (b)    Hold the tensioner with both hands and push the push rod
                                          strongly as shown to check that it doesn't move.
                                   If the push rod moves, replace the tensioner.
                                   NOTICE:
                                   Never hold the tensioner push rod facing downward.




                          P18764



                                   (c)    Measure the protrusion of the push rod from the housing
   Protrusion                             end.
                                          Protrusion: 10.0 - 10.8 mm (0.394 - 0.425 in.)
                                   If the protrusion is not as specified, replace the tensioner.




                          P18770




2001 SIENNA (RM787U)

                                                     Author :              Date :                964

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