Belt came off , still in place unsure of how it winds through the pulleys

ford tensioners use a tension set particular to ford
you loosen off the big pulley nut then put a hex key in the pulley shaft and wind the shaft up or down a rack at the back
loosen off to replace the belt and wind the opposite way to get belt tension
when tension is achieved , tighten up the big pulley nut
some models may have a socket type end or a square for an opened spanner rather than the hex end

Instructions

1. 1 Open the bonnet of the Pajero, and turn the bolt on the centre of the tension pulley with a socket wrench two full rotations. The tension pulley is the pulley directly behind the fan in the upper portion of the front of the engine.
   
2. 2 Loosen the adjuster bolt on the tension pulley bracket. This bolt is on the left-hand side, situated in a long horizontal groove.
   
3. 3 Slip the fan belt off of the engine. Draw a diagram of the path of the fan belt if the factory printed sticker diagram is no longer in the front of your engine on your Pajero.
   
4. 4 Insert the new fan belt, winding it through the various pulleys according to your diagram. Put it on the tensioner pulley last.
   
5. 5 Place the tension belt tool on the tension pulley bolt and pull until the slack in the belt is gone. When there is no slack, keep the pressure on the pulley, and tighten the adjuster bolt with the wrench. Tighten the lock bolt on the pulley.
   

Adjusting aircon belt on HZJ75 motor.
1 Loosen bolt at centre of idler pulley. Idler pulley is smaller pulley adjacent to the Aircon pulley.
2 Rotate the adjuster bolt clockwise to tighten belt. The adjuster bolt head sits directly above and behind the idler pulley.
3 Anti clockwise will loosen the belt. Wind to end of the adjustment to remove or replace belt then rewind bolt clockwise to required belt tension.
4 Retighten bolt at centre of idler pulley following any adjustments.

There are 6 possibilities, here are the 3 engines with A/C...







Consulting your owner's manual should give you an idea of how to replace a belt depending on which belt it is that needs changing. Assuming it is the timing belt that needs to be changed it is a simple process to undertake, though if you are unsure of working on motor cars it may be better to take the vehicle to a garage for professionals to carry out the work.

Firstly check your owner's manual for the recommended mileage for replacing your timing belt. Replacement for a Ford Focus is at 120,000 miles. You need to locate the timing belt and examine it for breaks, damage, fraying, worn spots or looseness.

Disengage the negative battery cable in all models. Detach the passenger inner splash-shield and wheel cover, the accessory drive and timing belts, the tensioner and the crankshaft pulley. Remove the spark plugs, catalytic converter and idler pulley in 2000 and older Ford Focuses. Undo the retaining fasteners and lift the timing belt cover off the engine. Align the crank and camshaft timing marks. Older models call for undoing the water pump pulley and valve cover before locking the camshaft in place. Release the tensioner's bolt. Turn the arm to the right 14 degrees and place a 1/8 inch drill bit in the opening. This secures the belt tensioner in place; you can now take the belt off.

Once you have fitted the new belt you can re-assemble the parts which have been removed in the reverse order.

Hope helps.

The belt is tightened by the TENSIONER pulley. That is a spring loaded smooth pulley the runs on the back side of the belt. After you have the belt on all the pulleys and IN THE PROPER SEQUENCE from pulley to pulley, the TENSIONER pulley has to be held away from the belt. The belt is slipped under the TENSIONER pulley and the pulley is slowly released to tighten the belt. If you have done all that and the belt is still loose, it may be the wrong size or you have it on the engine pulleys incorrectly. If you haven't moved the TENSIONER pulley to remove the old belt or the belt broke, you need to find the TENSIONER pulley and then carefully retract it. Here are some general instructions on the TENSIONER pulley, if you need them.

When you look at the serpentine belt, somewhere near the top you will see it runs over a smooth pulley. You will also notice that pulley is running on the back side of the belt. Most cars will have an arm that holds that pulley and is connected to a round housing approximately the same diameter as the pulley. That is the TENSIONER pulley and in the round housing is a very strong coil spring. In the center of the pulley there should be a hex nut. Put a socket the size of the nut on a long breaker bar and put it on the pulley nut. You should be able to move the pulley away from the belt by "turning" the nut. You may need to use a piece of pipe or other method to lengthen the breaker bar in order to turn it. As I said, it is a very strong spring. While holding the pulley away from the belt you can slip the belt off the nearest and smallest pulley. Then carefully and slowly release the breaker and allow the pulley to return to its released position. THIS CAN BE A DANGEROUS OPERATION THAT LOOKS SIMPLE. IT IS SIMPLE BUT BE AWARE THAT YOU MUST BE SURE YOU HAVE THE TENSIONER PULLEY UNDER CONTROL WITH THE BREAKER BAR AND THAT YOU CAN HOLD IT WHILE POSITIONING THE BELT UNDER THE PULLEY. IF IT SLIPS FROM YOUR BREAKER OR YOU CAN'T HOLD IT YOU COULD BE SEVERELY INJURED. TRY MOVING AND SLOWLY RELEASING THE PULLEY BEFORE YOU ATTEMPT TO PUT THE THE BELT UNDER THE PULLEY. GET HELP OR TAKE IT TO A QUALIFIED MECHANIC IF YOU ARE UNSURE!! Also, be sure you note the track of the belt before you remove it, so you can reinstall it. Some cars have a diagram of the belt, showing how it winds it way across all the pulleys. When you reinstall it, be sure the belt is properly aligned on all the pulleys before starting the engine. Be careful and good luck!

Release the tension keeping the belt in place. You need a tool to attach to the tensioner, rotate it to loosen and remove the belt. Look under the hood for the instructions on how to wind the new belt back on the pulleys.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/michael_2496c4f07ad24453

These instructions will help you . and also the picture below will help you more.
1
Locate the belt-routing diagram, printed on the fan shroud or possibly applied to the underside of the hood. This diagram shows you how to properly route the new belt, as well as identifying the location of the various pulleys, including the serpentine belt tensioner.
2
Move the belt tensioner off the Sable's belt using the serpentine belt tool. The tool connects to the side of the tensioner's arm and essentially acts as a handle for use in moving the tensioner. You can purchase a serpentine belt tool at most auto-part retailers.
3
Slip the belt away from the tensioner with your free hand and release the pressure on the tensioner with the tool. Pull the belt off the rest of the pulleys by hand and then remove it from the engine well.
4
Grab the old belt and new belt with one hand and put your foot through the other end of the belts. Stretch them both to their full length and check to ensure their both the same size. The old belt may have up to one-inch of extra length due to normal stretching that occurs during the belt's service life.
5
Wind the new belt, rib side to the pulley, around the crankshaft pulley. Consult the routing diagram and route the belt to the next pulley on the diagram. Continue to route and then check the diagram until you have the belt wound around every pulley except the belt tensioner pulley.
6
Double check to make sure the belt routes exactly as shown on the diagram and then move the tensioner aside once more so you can route the belt over the tensioner pulley as shown in the diagram. Move the tensioner back into place slowly and remove the tool.

Good luck

Hi,

The detailed solution provided below will be of great help to you,just follow the steps carefully;

1.Raise the hood of your Subaru and support it with the prop rod. Locate the negative battery cable at the negative battery terminal. Remove the retaining bolt from the battery cable end with a wrench and separate the cable from the terminal.
2.Find the serpentine belt tensioner on the front of the engine and place a socket on the apex bolt in the center of the idler pulley. Attach a breaker bar to the socket and rotate the tensioner clockwise until the belt is loose, then remove it from the pulleys. Rotate the tensioner back to the home position and let it sit there for now.

3.Install the new serpentine belt over all the pulleys except the tensioner pulley. It is important that the belt follow the correct path over the pulleys. If you are unsure of the path, look for the sticker under the hood with the belt-path diagram on it.

4.Rotate the tensioner clockwise far enough to install the belt around the pulley on the tensioner, then slowly rotate the tensioner back to the home position. The tensioner will tighten the belt correctly and no adjustment is required.

5.Install the negative battery cable back on the negative battery terminal and install the retaining bolt. Tighten the bolt with a wrench, then close the hood.

Problem solved,
Good luck!!

Most are held in place by a tension pulley. It is on a spring load tension arm. It takes a breaker bar to get enough force to move the arm. Pushing/pulling in the wrong direction loosens the nut. Make sure you are moving the tension arm. This will release the tension on the belt and allow it to slip off. Pay close attention to the winding around the various pulleys. When putting on the new one make sure the grooves in the belt get into the correct grooves on the pulleys. A smooth pulley goes against the smooth side of the belt if you get confused. Likewise the grooves on the belt go into the grooved pulleys. Reapply the tension on the tension pulley to slip the belt over the uppermost pulley (should be grooved). Check the alignment before starting the engine.

To change the drive belt you will need to find the tensioner pulley justt loosen the bolt /nut in the center of the pulley and then wind the pulley slider down usually located on the back side of the pulley. wind it down until you can slip the belt off. if the is 2 belt say for instance power steering and ac etc remove the outer belt first the power steering pump may have the tensioner on it same concept though. loosen nut/bolt and unwind til the belt slip off the pulley. remember to disconnect your battery because its better safe than sorry. Good luck!