DESCRIPTION
Many manufactures are converting to single ("serpentine" or "V" ribbed) belt systems to drive components which normally have required multiple "V" belts. The serpentine belt system incorporates a tensioner which makes it possible to rigidly mount belt-driven components which formally required individual adjustment. Manufacturers claim a belt life of 100,000 miles and little, if any, necessary adjustment.
The serpentine belt tensioner controls belt tension over a wide range of belt lengths. The tensioner cannot compensate for extreme belt lengths. Poor tension control or possible tensioner damage can result from excessive length belts.
INSPECTION
Check belt for fraying. If fraying is noticed, be sure both belt and tensioner are aligned properly. (Scheme 1) If tensioner reaches limit of travel, belt is stretched and should be replaced. If a whining or grinding noise can be heard around tensioner or idler, check for possible bearing failure.
Serpentine Belt Alignment. Scheme 1
Serpentine Belt Routing
Install belt on crankshaft and belt-driven components as shown below. Adjust tensioner.
