I have a 2003 rav4 v4 and I'm replacing the serpentine belt. What do I loosen to remove the old belt and install new?

NO engine told of 7, and is an engine question wow hard. that.

the service manual covers that.
https://eautorepair.net/Marketing/Default.asp
did the belt fall off, not told , the story.

all have tensioner that must be retracked
2 kinds, fixed bolt kind
or, the spring loaded kind and to be frank we make sure is kind is not bad first. if there at 19 years old.
called the main front drive belt system. (not cams)
I am not answering for all 7 sorry.
all we do is look at it. see what tensioner is there,
if spring type we retract it with a beaker bar socket drive. per the manual told in services manuals
if not spring type out comes my tension tool and per spec, do that.

Below is the master help link provided to go through belt routing diagram:---Timing belt, drive belt, serpentine belt, accessory belt, fan belt, engine belt routing diagrams for all types of car models?
Click the link below: ----

http://carbeltrouting.blogspot.in/2012/02/timing-beltdrive-beltserpentine.html
----------This will help. Thanks.

Pop the hood of the car and locate the serpentine belt routing diagram. The diagram on the 2003 Chevrolet Impala is on top of the fan shroud. The diagram will be a picture of all of the accessory pulleys and how the serpentine belt is routed among the pulleys. This diagram will give you the exact direction for routing the new belt onto the pulleys. If you cannot find a serpentine belt routing diagram, take a notepad and pen and draw out the exact routing diagram of the old belt across the pulleys.

2 Locate the serpentine belt tensioner. It is located below the alternator on the left front side of the engine. The tensioner on the 3.4 liter, 3.5 liter and the 3.9 liter engines will require a 3/8 ratchet to release the belt tensioner. The 3.8 liter engine will require a ratchet and a 15 mm socket for the belt tensioner. Rotate the belt tensioner clockwise to loosen and remove the belt from the belt tensioner pulley.

3 Slide the old belt from the belt tensioner pulley. Remove the belt from the remaining pulleys and pull the belt from the engine compartment.

4 Route the new belt across the crankshaft pulley first. The crankshaft pulley is the big pulley on the bottom of the engine in the center. Then route the serpentine belt across the remaining pulleys as directed by the serpentine belt routing diagram. Leave the belt tensioner pulley for last.

5 Rotate the belt tensioner clockwise again to relieve the tension and slide the new belt across the top of the belt tensioner pulley. Release the belt tensioner and the belt will tighten up as the tensioner applies pressure to the belt. Make sure the new belt is properly seated in all the pulleys.

6 Crank the engine and inspect the belt again to make sure that it stays seated in the pulleys.

Read more: How to Replace a Serpentine Belt on a 2003 Chevrolet Impala ' eHow.co.uk http://www.ehow.co.uk/how_6120665_replace-belt-2003-chevrolet-impala.html#ixzz1Yi6QLAjb

1. 1 Check to ensure the Sienna's engine is cold, then make sure the Sienna is in park, the ignition is in the off position and the key is removed from the ignition to prevent any possibility of the engine engaging during the serpentine belt replacement.
   
2. 2 Open the hood and locate the serpentine belt routing diagram sticker on the side of the engine casing. Study it for a moment before removing the existing belt. It is essential the new belt be installed exactly as the diagram indicates.
   
3. 3 Find the tensioner pulley, the main pulley that controls the serpentine belt, and fit a 1/2-inch socket wrench over the self-tensioner on the outside of the pulley.
   
4. 4 Pull the wrench to the left to move the pulley forward, which loosens the belt, then remove the belt.
   
5. 5 Compare the old serpentine belt with the new, replacement belt for length, width and number of grooves on the belt's underside. Be certain the replacement belt is the right part.
   
6. 6 Fit the new belt on to each pulley according to the serpentine belt routing diagram on the manufacturer's sticker, or according to the drawing made prior to removing the old belt. Fit the new belt on to the tensioner pulley last, again applying pressure on the pulley's self-tensioner with the half-inch socket wrench to loosen the pulley.
   
7. 7 Release the pressure on the self tensioner and allow the tensioner pulley to ease back into place, thereby tightening the new serpentine belt with the appropriate tension.
   
8. 8 Remove the wrench and close the hood.
   

Thank you and good luck,
Lee

Click on the following direct, free Link. It has Serpentine Diagrams for the 2003 Toyota RAV4. It also has additional - very helpful Instructional and Directional Diagrams.

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!

http://www.2carpros.com/car_repair_information/year/2003/make/toyota/model/rav4/2003_toyota_rav4_drive_belt_routing_diagram.htm

you have to loosen off the tensioner with a serpentine tool.then the new belt can be installed.if the old belt is not broken,draw the belt routing before removal.

4 cylinder diagram
6 cylinder diagram
Loosen the tensioner pulley to remove the belt. It is the one that has a long bolt running through it. Once you remove the old belt, install the new one using the appropriate diagram from the above two links. Readjust the tension using the bolt you loosened to remove the old belt.

i hope this helps
matthew

look at the pulleys, and locate the tensioner. It's usually in the center of all of the pulleys, and has the belt wrap around it, but isn't an obvious accessory like the alternator, PS pump, water pump, or crankshaft. The tensioner will have a square recess in it, allowing you to put a 3/8" square drive ratchet in it. When you turn it, you will notice that teh belt loosens. When it does, slip it off of the tensioner, but hold it in place for reference. Put the new belt on, routing it exactly like the old one, take out the old one, and load the tensioner exactly like you did when you loosened it. Ensure that the belt ribs are seated in the centers of all pulleys, and you are done.

1st: remove serpentine belt then use tensioner by ac compressor to relieve tension on ac belt.
remove old belt & install new one then install serpentine belt

Just loosen the tensioner and remove the old belt. Install the new one routing it as listed below.
http://www.2carpros.com/car_repair_information/tec_info/2002/toyota/rav4/2002_toyota_rav4_drive_belt_routing_diagram.htm