Oldsmobile 1997 Aurora Owner's Manual page 327

Engine Accessory Belt Routing
The
4.0L
Aurora engine uses an engine accessory belt.
This diagram shows the features connected by the belt
routing. See "Maintenance Schedule" in the Index for
when to check the belt.
1.
2.
3.
4.
5.
6.
Tensioner Arm Pulley
Power Steering Pump Pulley
Idler Pulley
Alternator Pulley
Air Conditioner Compressor Pulley
Harmonic Balancer
6-75