Dodge Repair: replacing belt tentioner, tensioner pulley, dodge caravan

Question
QUESTION: can you give me step by step instructions on how to remove and install a belt tentioner for a 1999 dodge caravan.

ANSWER: what motor size?

---------- FOLLOW-UP ----------

QUESTION: the motor size is 3.3 L

Answer
after the belt is off the 15mm nut behind the tensioner is under the van so unless u can get under the van u might want to get some one to do this for u.  

ACCESSORY DRIVE BELT - 3.3/3.8L ENGINE
The Poly-V serpentine drive belt is provided with a dynamic tensioner Accessory Drive Belt - 3.3/3.8L Engines to maintain proper belt tension to drive the following components:

generator
power steering pump
air conditioning compressor
water pump
REMOVAL
Raise vehicle on hoist.
Remove accessory drive belt splash shield Accessory Drive Belt Splash Shield
WARNING: DO NOT ALLOW DRIVE BELT TENSIONER TO SNAP BACK, AS DAMAGE TO TENSIONER AND/OR PERSONAL INJURY COULD RESULT.

Release belt tension by rotating the tensioner clockwise Accessory Drive Belt - 3.3/3.8L Engines
Remove drive belt.
INSTALLATION
Properly route and position belt onto all pulleys, except for the tensioner pulley Accessory Drive Belt - 3.3/3.8L Engines
Rotate belt tensioner clockwise until belt can be installed onto the tensioner pulley Accessory Drive Belt - 3.3/3.8L Engines Slowly release belt tensioner.
Verify belt is properly routed and engaged on all pulleys.
Install splash shield Accessory Drive Belt Splash Shield and lower vehicle.