How to remove serpentine belt tensioner assembly on v6 3.2 lt DOHC (6vd1) engine so i can then access timing belt covers etc..????? I have the assembly loose to the point that it rotates about 90-100 degrees back and forth,it seems to be on a shaft somehow ?? Thanks for any help....ROB...

I believe this is for 1.8L engine, serpentine belt. If you have a different belt for each component, that is a different issue? With multiple belts, the component usually has a pivot bolt, you loosen the bolt, then move the component to release or increase tension on the belt, then tighten the bolt.
With a serpentine belt, the tensioner does that for you.

Remove the alternator/power steering pump and water pump drive belt to gain access to the air conditioning drive belt.
To remove and install the air conditioning compressor drive belt, first loosen the tensioner pulley lock nut, then turn the adjusting screw to raise or lower the tensioner pulley assembly Accessory Drive - 3.3L Engine or Accessory Drive - 3.5L Engine To adjust the air conditioning drive belt, loosen the tensioner pulley nut and adjust belt tension by tightening adjusting screw. Torque pulley nut to 54 N•m (40 ft. lbs.) after adjustment.
The Poly-V generator/power steering belt has an adjustable tensioner pulley located on the timing belt cover Accessory Drive - 3.5L Engine to maintain proper belt tension. To remove or install this belt, Release tension by loosening the tensioner pulley nut and adjustment bolt Accessory Drive - 3.5L Engine Reverse procedure to install and tighten belt to specified tension.

You'll need a Serpentine Belt Tool and a socket set.

Rotate the Caravan's serpentine belt tensioner assembly clockwise to relieve the tension on the belt. Slip the belt off the tensioner with your free hand before rotating the tensioner back to its home position. Remove the tool.
Extract the two mounting bolts that hold the serpentine belt tensioner assembly to the Caravan's front engine cover using your socket set. Depending on your physical size and dexterity, you may find this easier to accomplish through the top of the engine well or through the passenger-side wheel well.
Pull the old serpentine belt tensioner assembly out of the Caravan's engine bay by hand. Place the new serpentine belt tensioner assembly on the Caravan's front engine cover and bolt it in using your socket set.
Rotate the new serpentine belt tensioner assembly clockwise with the serpentine belt tool and then place the belt on the pulley by hand. Rotate the new serpentine belt tensioner assembly back into place. Remove the tool and close the hood.

TIMING BELT
Removal
Disconnect negative battery cable. Disconnect intake air temperature sensor connector from intake air duct. Disconnect the air intake tube from the throttle body. Disconnect the breather tube from the valve cover. Remove resonator from throttle body. Remove air filter housing.
Raise and support the vehicle. Remove right front wheel. Remove right front splash shield from wheelwell. Remove serpentine accessory drive belt.
Remove crankshaft pulley bolts. It is NOT necessary to remove crankshaft sprocket center bolt. Remove crankshaft pulley. Lower vehicle.
Support engine assembly from above with Support Fixture (J-28467-B). Remove engine mount bracket from timing belt end of engine.Remove power steering hose clamp bolt, and position hose away from timing belt cover. Remove front timing belt cover. Using crankshaft center bolt, rotate crankshaft one full turn clockwise (as viewed from timing belt end of engine).
Align mark on crankshaft sprocket with notch at bottom of rear timing belt cover. See Fig. 4 . Align camshaft sprocket timing marks with notches on valve cover. See Fig. 5 .
CAUTION: Engine damage could result if camshaft sprockets are not properly aligned with notches on valve cover.
Loosen the automatic tensioner bolt. Use an Allen wrench to rotate tensioner and relieve tension on timing belt. Remove timing belt.
Fig. 4: Aligning Crankshaft Sprocket Timing Mark
Courtesy of DAEWOO MOTOR AMERICA, INC.

Fig. 5: Aligning Camshaft Sprocket Timing Marks
Courtesy of DAEWOO MOTOR AMERICA, INC.

Installation
Ensure crankshaft and camshaft timing marks are still aligned. Install the timing belt. See Fig. 7 . Turn the timing belt tensioner counterclockwise to tension the timing belt. Turn tensioner until the pointer aligns with the notch on the rear timing belt cover. Tighten automatic tensioner bolt to specification. See TORQUE SPECIFICATIONS .
Using crankshaft center bolt, turn crankshaft clockwise (as viewed from timing belt end of engine) 2 full revolutions. Ensure timing belt tensioner pointer is still aligned with notch.
If timing belt tensioner is correctly aligned, install timing belt cover. See Fig. 3 . Install the engine mount bracket on the timing belt end of engine. Position power steering hose in place, and install clamp bolt. Install crankshaft pulley. Install serpentine accessory drive belt.
Install right front splash shield. Install right front wheel. Install air filter housing and resonator. Connect air intake temperature sensor connector. Connect negative battery cable.
Fig. 7: Identifying Timing Belt Routing
Courtesy of DAEWOO MOTOR AMERICA, INC.

here

http://www.2carpros.com/questions/daewoo-leganza-2000-daewoo-leganza-timing-marks

1989–92 VEHICLES

1. Disconnect the negative battery cable.
2. Remove the serpentine belt and timing belt cover.
3. Loosen the water pump bolts and release tension with tool J–33039 or equivalent.
4. Raise and support the vehicle safely.
5. Remove the crankshaft pulley.
6. Carefully lower the vehicle, then remove the timing belt. Fig. 11: Exploded view of the timing belt assembly — 1989–92 OHC engines
   To install:
   
7. Turn the crankshaft and the camshaft gears clockwise to align the timing marks on the gears with the timing marks on the rear cover.
8. Install the timing belt, making sure the portion between the camshaft gear and crankcase gear is in tension.
9. Using tool J–33039 or equivalent, turn the water pump eccentric clockwise until the tensioner contacts the high torque stop. Tighten the water pump screws slightly.
10. Turn the engine by the crankshaft gear bolt 720°to fully seat the belt into the gear teeth.
11. Turn the water pump eccentric counterclockwise until the hole in the tensioner arm is aligned with the hole in the base.
12. Tighten the water pump screws to 18 ft. lbs. (24 Nm), while checking that the tensioner holes remain as adjusted in the prior step.
13. Install the crankshaft pulley, timing belt cover and the serpentine drive belt.

1993–94 VEHICLES

1. Disconnect the negative battery cable, then partially drain and recover the cooling system.
2. Remove the coolant recovery reservoir.
3. If equipped, remove the A/C belt.
4. Remove the serpentine belt.
5. Disconnect the evaporative emission pipe assembly.
6. Remove the crankshaft pulley assembly.
7. As outlined earlier, remove the timing belt front cover.
8. Align the marks on the crankshaft sprocket with the marks on the rear timing belt cover by rotating the crankshaft.
9. Loosen the water pump retaining bolts, and release the tension with tool J 33039-A or equivalent.
10. Carefully lower the vehicle, then remove the timing belt. Fig. 12: Timing belt installation and tightening specifications — 1993–94 2.0L OHC engines
    To install:
    
11. Turn the crankshaft and camshaft gears clockwise to align the timing marks on the gears with the timing marks on the rear cover.
12. Install the timing belt, making sure that the portion between the camshaft gear and crankshaft gear is in tension.
13. Using tool J 33039-A, or equivalent adjustment tool, turn the coolant pump eccentric clockwise until the tensioner arm contacts the high torque stop. Tighten the water pump screws slightly.
14. Turn the engine by the crankshaft gear bolt 720°clockwise to fully seat the belt into the gear teeth.
15. Turn the coolant pump eccentric counter clockwise until the hole in the tensioner arm is aligned with the hole in the base. This must be done with the engine at room temperature, approximately 68°F (20°C).
16. Tighten the water pump screws while checking that the tensioner holes remain as adjusted as in step 15.
17. As outlined earlier, install the timing belt cover.
18. Install the crankshaft pulley.
19. Connect the evaporative emission pipe assembly.
20. Install the serpentine drive belt and the A/C belt (if equipped).
21. Install the coolant recovery reservoir.
22. Properly fill the cooling system, then connect the negative battery cable.

Removal & Installation

1. Raise and support the vehicle.
   
2. Remove the side and lower splash shields as an assembly via the bolts.
   
3. Rotate the drive belt tensioner clockwise and remove the drive belt.
   

To install:

1. Replace the drive belt and rotate the tensioner to its original position.
   
2. Attach the splash shields
   

Accessory drive belt routing —Ford/Mercury 2.0L (VIN P) SOHC engine with A/C




Accessory drive belt routing —Ford/Mercury 2.0L (VIN P) SOHC engine without A/C





Accessory drive belt routing —Ford/Mercury 2.0L (VIN 3) DOHC engine

Click on the following free direct Link. It has several of the Serpentine Belt Diagrams and Tensioners that are possible with your 2.0L 4-Cylinder engine and engine options (AC/No AC, etc.).

http://www.2carpros.com/car_repair_information/year/1990/make/pontiac/model/sunbird/1990_pontiac_sunbird_drive_belt_routing_diagram.htm

A. Remove the Serpentine Belt.
"HOW TO":
Standard Rules to Removal the Serpentine Belt with a Tensioner:
1. Find the Tensioner(s). (See Diagrams on Link)
2. Using a Serpentine Belt Tensioner Tool, Or Wrench OR Ratchet, Rotate/Move the Tensioner USING THE AVAILABLE NUT (on the Pulley or Arm Base) OR the OPENING (3/8ths or 1/2 inch square opening) rotating the Tensioner Pulley/Arm - moving it away from contact with the belt and towards the area where the belt is not in contact with the Tensioner Pulley. The Tensioner is spring loaded, and is hard to rotate/move.
3. Remove the loosened belt off one of the other more easily accessed Pulleys.
4. DO NOT quickly release the Tensioner, but gently allow the Tensioner to rest in its closed position.

B. Remove the Tensioner:
Removing the Tensioner Pulley: See the Diagrams in the Link.
After the Belt has been removed, with the Tensioner resting:
DEPENDING ON WHAT TYPE TENSIONER:
(1.) IF the Tensioner Pulley itself HAS a Bolt Head showing, SOME of these bolts can be removed and the Tensioner Pulley replaced.
(2.) IF the Tensioner Pulley itself DOES NOT HAVE a Bolt Head showing, then go to the Tensioner Base located at the end of the Tensioner Arm. This should have a Bolt Head Showing. Remove this Bolt and the whole Tensioner Assembly will come off.
(3.) Some Tensioner Assembly's need you to locate and remove mounting bolts.

If Applicable: When replacing the Tensioner Assembly - MAKE SURE you place the protruding "nipple" on the underside base of the Tensioner into the appropriate cavity on the engine face.

Standard Rules for Installing the Serpentine Belt with Tensioners:
a. Pick a Pulley that is most easily accessed. This will usually be on top. This will be the last Pulley that the belt will go on.
b. Using the Diagram: Install the new Serpentine Belt on the remainder of the Pulleys....over, under, left right.
c. Using a Serpentine Belt Tensioner Tool or Wrench or Ratchet Tool: Rotate/Move the Tensioner Pulley/Arm "away" from Belt contact area on the Tensioner. This spring is pretty hard and with a new belt, it will be even harder to install. Rotate/Move this to as-close to the maximum allowed inorder to have enough slack in the belt to get it up and over the last pulley.
d. Using your other hand - Pull the Belt up and over the Last remaining Pulley.
e. Before releasing the pressure on the Tensioner, visually inspect the remainder Pulleys and the Belts' Positioning on them

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

Drive Belt: Service and Repair
DRIVE BELT

Components



REMOVAL
1. REMOVE V-BANK COVER SUB-ASSEMBLY
2. REMOVE NO. 1 ENGINE UNDER COVER





3. REMOVE FAN AND GENERATOR V BELT
(a) While turning the belt tensioner counterclockwise, align the service hole for the belt tensioner and the belt tensioner fixing position, and
then insert a bar of [diameter]5 mm (0.197 in.) into the service hole to fix the belt tensioner in place.
HINT: The pulley bolt for the belt tensioner has a left-hand thread.
(b) Remove the V belt.



1. INSTALL FAN AND GENERATOR V BELT
(a) Set the V belt onto every part.
(b) While turning the belt tensioner counterclockwise, remove the pin.
NOTICE: Make sure that the V belt is properly set to each pulley.
(c) After installing the belt, check that it fits properly in the ribbed grooves.
HINT: Make sure to check by hand that the belt has not slipped out of the grooves on the bottom of the pulley.
2. INSTALL NO. 1 ENGINE UNDER COVER
3. INSTALL V-BANK COVER SUB-ASSEMBLY

Sonata 2005 2.4 DOHC
REMOVAL 1. Drain the coolant and disconnect the coolant pump inlet pipe. 2. Remove the drive belt and engine coolant pump pulley. 3. Remove the timing belt covers and the timing belt tensioner. 4. Remove the engine coolant pump mounting bolts, then remove the alternator brace. 5. Remove the engine coolant pump assembly from the cylinder block.