Installing accessory belt's tensioning pully

Not sure what spec your looking for. I replaced the tensioner pully on my F-150 302 last year though. And basically the bolt is left hand thread and turning the bolt gives the slack in belt needed to take belt off, and put back on. Hope this helps.

Find the pully adustment , you should see a long bolt with a square head on it . loosen bolt and pully will push up off belt. Then install and reverse pully install..

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Fig. Accessory drive belt routing-2.7L engine
Chrysler Cirrus & Sebring Convertible; Dodge Stratus; Plymouth Breeze

Fig. Accessory drive belt routing-Chrysler 2.7L engine

2.7L Engine
A/C & Alternator Belt

1. Raise and safely support the vehicle.
2. Remove the right front wheel and belt splash shield.
3. Loosen tensioner locking bolt and pivot bolt.
4. Rotate tensioner clockwise to allow enough slack to remove belt

To install:

1. Install the air conditioning compressor/alternator belt on pulleys, tensioner in slack position, slip belt over idler last.
2. Adjust drive belt tension.
3. Install the belt splash shield and right front wheel.
4. Lower vehicle.
   
   
   

   Fig. Installing A/C & alternator belt-2.7L engine
   

1. Before servicing the vehicle, refer to the Precautions Section.
2. Raise and safely support the vehicle.
3. Remove the right front wheel and belt splash shield.
4. Loosen the tensioner locking bolt and pivot bolt.
5. Rotate tensioner clockwise to allow enough slack to remove the belt

To install:

1. With the tensioner in a slack position, install the Air Conditioning (A/C) compressor/alternator belt on the pulleys. Slip the belt over the idler last.
2. Adjust the drive belt tension.
3. Install the belt splash shield and right front wheel. Tighten the wheel lug nuts to 100 ft. lbs. (136 Nm).
4. Lower the vehicle.
   

Power Steering Belt

1. Raise and safely support the vehicle.
2. Remove the right front wheel and belt splash shield.
3. Remove the air conditioning compressor/alternator belt.
4. Loosen belt adjusting bolt. It is not necessary to loosen the pivot bolt on the power steering pump. There is a bushing incorporated into the power steering pump/bracket that allows it to pivot.
5. Remove the power steering belt.

To install:

1. Install the power steering belt on pulleys.
2. Adjust drive belt tension.
3. Install the air conditioning compressor/alternator belt.
4. Install the belt splash shield and right front wheel.
5. Lower vehicle.

What engine?

It should have an automatic tensioner for the serpentine belt. If the tensioner does not automatically rotate and take up the slack in the belt than it is bad and needs to be replaced.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Hope this helps:

Removal & Installation

1. Remove the air cleaner outlet pipe.
   
2. Rotate the drive belt tensioner clockwise and remove the drive belt.
   

Rotate the drive belt tensioner clockwise and remove the drive belt

To install:

1. Installation is the reverse of the removal procedure. Make sure the belt is routed properly
   

Accessory serpentine belt routing-Ford 4.6L, 5.4L, and 6.8L engines with A/C

Accessory serpentine belt routing-Ford 4.6L, 5.4L, and 6.8L engines without A/C

Please let me know if it's diesel because the routing is different.

You need to locate the tension pulley and by moving it with a wrench you will have enough slack to finish the job BE CAREFUL it can require a lot of power to release the tension

you should not have to adjust the timeing belt unless you are installing it. if you are installing it. I rotate the crank to take out the slack, and put the slack on the tensioner side. loosen the tensioner pull and pull it up tight with your hand and release it allowing the spring to keep the tension while you tighten the tensioner pully bolt.
If they ar too tight they make a high pitch groan heard easiest when reving up the engine. If the are too loose they may skip time. not good.

Use a 3/8" socket end to rotate the tensioner counter clockwise. It may seem stiff, but that's a good thing... you want the tension to be there. After it's off the tensioner the belt will pretty much just come out of place and off the other pulleys. ***make sure you orientate the belt as it was originally (ac or w/ ac)...diagram should be on the front shroud.

You must press on tensioner to make room for new belt. The tensioner then re-traps and keep belt tension when new belt in on. So in other words you have to put belt over all othe pulley leaving tensioner for last using a 3/8 ratchet with out a socket (just the square end) in the hole thats in the tensioner pushdown/up to make room for belt to slide on. If the belt seems short make sure that it is routed the correct way. Good Luck get back to me if you need more help and leave me a "rating". Thanks