How to loosen the fan belt to get the altenator off?

disconnect negative battery cable. Then remove rubber boot on altenator. Remove nut and cable attached. Unplug and remove wire harness also attached to altenator.
Loosen and remove both bolts holding on altenator.
Remove altenator.
Reverse process to reinstall. Pry on belt tensioner with pry bar and socket to loosen belt and place on altenator pulley after it is installed.
Last reattach battery cable and start vehicle.

Changing water pump invovles : remove the under cover, draining coolant, remove upper and lower radiator hoses, resservior tank hose, fresh air duct remove engine fan and shroud together loosen altenatormounting bolt and adjustment bolt remove altenator belt and fan pully, remove the 3 fan brakett assembly bolts and brackett assembly, remove the upper and lower timing belt covers . Turn crankshaft so #1 cylinder is at TDC then loosen timing belt tensioner lock bolt and pry tensioner away to loosen belt retighten tensioner lock bolt, remove and inspect timing belt as now is the time to replace bad or worn belt remove the water pump bolts and then same the coolant pump is the plate with the timing belt tensioner and idler pulley and a cogged gear at lower right. clean mating surfaces install in reverse order tighten coolant pump bolts to 16 ft-lb and tihgten tensioner bolt to 32 ft-lb coolant capacity about 7 quarts. be ecofreindly dispose of coolant according to local laws

disconnect the negative battery. remove the belt by rotate the tensioner roller clockwise. from the left car side u will see three hexagon screw 13mm under the altenator. loose out the screw and remove the altenator. before that unplug the two wire behind the altenator.tq

just in front of the altenator, there is a 10mm bolt, tighten that and it will tighten the fan belt .
these belts are quite tight, make sure the one you have is the correct length, sometimes the suppliers will send one that is close to the correct size, and is sometimes a few milimeters smaller.

You dont normally have to loosen anything else, but the easiest way is to put the belt on the alternator, tensioner and power steering first, then ease the belt over the ridge of the crankshaft last, one rib at a time, but evenly all the way around the pulley.


for more step by step instructions with proper diagram please click on this link directly
http://www.howtodothings.com/automotive/a3038-how-to-replace-a-fan-belt.html
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this will help.thanks.

Loosen the altenator mounting bolts, pull the altenator so the belt tightens and re-tighten the mounting bolts.

I don`t know that there is a bolt to loosen the belt tension.There should be a automatic tensioner that you pull back and hold to remove the belt.

1.Remove the air cleaner outlet tube.
2.Use the drive belt tensioner pulley bolt and rotate the drive belt tensioner clockwise.

ONE OF THE PULLEYS SHOULD HAVE A SQUARE DRIVE (3/8 DRIVE) PUT A RATCHET IN THAT HOLE AND ROTATE THE "TENSIONER" TO RELEASE TENSION ON THE BELT.

Have you taken the belt off yet.
The belt is tensioned with a pulley which is spring loaded. Look for a small pulley wheel about 2 inches in diameter. Put a spanner on the nut and move it to loosen the belt.The alternator is a fixed one which has no adjusting arm. Just bolts to secure it.
Good Luck

first disconnect battery,remove wiring loom from altenator the slacken V belt tensioner bolt so altenator swings free then undo the two bottom bolt or one long one depending on model.easy ,now the difference between sunday mechanic and a mechanic undo the two screws that hold the regulator/brush set housing and renew the brushes providing the commutator is servicable.