Drive Belt: Testing and Inspection

DRIVE BELT

COMPONENTS:

ON-VEHICLE INSPECTION





1. CHECK DRIVE BELT TENSION
a) Using a belt tension gauge, measure the belt tension.
Belt tension gauge:
DENSO BTG-20 (95506-00020)
Borroughs No. BT-33-73F

Standard drive belt tension

Standard drive belt tension:

HINT:
^ After installing the drive belt, check that it fits properly in the ribbed grooves. Check with your hands to confirm that the belt has not slipped out of the groove on the bottom of the crankshaft pulley.
^ A new belt is a belt which has been used less than 5 minutes on a running engine.
^ A used belt is a belt which has been used on a running engine for 5 minutes or more.
^ After installing a new belt, run the engine for approximately 5 minutes and then recheck the tension.





b) Reference:
Check drive belt deflection.
1) When not using a belt tension gauge, measure the belt deflection.
Pressing force: 98 N (10 kgs, 22 lbs.)
Standard belt deflection

Standard belt deflection:

NOTICE:
^ Check the drive belt deflection at the specified point.
^ When installing a new belt, set its tension value as specified.
^ When inspecting a belt which has been used over 5 minutes, apply the specification of Used Belt.
^ When reinstalling a belt which has been used over 5 minutes, adjust its deflection and tension to the intermediate value of each specification of Used Belt.
^ Belt tension and deflection should be checked after 2 revolutions of engine cranking.
^ When using a belt tension gauge, confirm the accuracy by using a master gauge first.