DESCRIPTION
Some models use the serpentine or "V" ribbed belt system to drive components which normally require multiple "V" belts. The serpentine belt system include idler pulley(s) or a tensioner. The tensioner makes it possible to rigidly mount belt-driven components, which previously required individual adjustment.
INSPECTION
Check belt for fraying. If fraying is noticed, ensure belt and tensioner are properly aligned. (Scheme 1) Check belt for cracks parallel to the rib area. Replace belt if cracks exist. Check tensioner for roughness in rotation. Replace if necessary.
Note. Belt may be cracked across the rib surfaces. This is normal wear. Belt must be replaced if cracks run parallel to rib area.
Scheme 1
Scheme 2
Scheme 3
- If idlers were removed, ensure they are installed with spacer between pulley and engine. Install belt on crankshaft and belt-driven components as shown. (Scheme 2)and (Scheme 3). CAUTION: Belt must be installed in correct direction or water pump will rotate in opposite direction, causing engine damage.
- With all components installed, belt tension must be checked using Belt Tension Gauge (7198). On A/C models, check belt tension midway between A/C compressor and alternator. On all other models, check belt tension midway between water pump and alternator.
- Tighten alternator adjusting bolt until belt tension is correct. See BELT TENSION SPECIFICATIONS table in this article. Tighten alternator pivot bolt.
| Application | Tension Lbs. (kg) |
|---|---|
| New Belt | 180-200 (81-90) |
| Used Belt | 140-160 (63-72) |
BELT TENSION SPECIFICATIONS
ALL OTHER MODELS
Install belt on crankshaft and belt-driven components as shown. (Scheme 4)- (Scheme 6). On 3.0L and 3.3L, belt tension will be automatically obtained by tensioner.
