The pulley on the power steering pump slides back and forth causing the fan belt to come off. Is ther supposed to be a bolt to hold the pulley tight?

Loosen the pivot bolt. Most have an adjusting bolt and a pivot bolt where the PS pump can move back and forth a bit.

Take off the belt & feel for the water pump bearing

V-BELT ADJUSTMENT CAUTION
On models equipped with an electric cooling fan, disconnect the negative battery cable or fan motor wiring harness connector before replacing or adjusting drive belts. The fan may come on, under certain circumstances, even though the ignition is OFF. Alternator Drive Belt

1. Position a ruler perpendicular to the drive belt at its longest run. Test the tightness of the belt by pressing it firmly with your thumb. The deflection should not exceed 1?4 in. (6mm).
2. If the deflection exceeds 1?4 in. (6mm), loosen the alternator mounting and adjusting arm bolts.
3. On 1968-72 V8 and 6 cylinder models, use a prytool to move the alternator toward or away from the engine until the proper tension is reached. NOTE: Apply tension to the front of the alternator only. Positioning the prytool against the rear end housing will damage the alternator.
   
4. On 1973 and later V8 models, place a 1 in. (25.4mm) open-end or equivalent wrench on the adjusting arm bolt and pull on the wrench until the proper tension is achieved.
5. Holding the alternator in place, tighten the adjusting arm bolt. Inspect the belt tension. When the belt is properly tensioned, tighten the alternator mounting bolt. Fig. 1: Alternator belt adjustment
   

Power Steering Drive Belt ALL 6-CYLINDER AND 1971-72 V8 MODELS

1. Holding a ruler perpendicular to the drive belt at its longest run, test the tightness of the belt by pressing it firmly with your thumb. The deflection should not exceed 1?4 in. (6mm).
2. To adjust the belt tension, loosen the adjusting and mounting bolts on the front face of the steering pump cover plate (hub side).
3. Using a prytool on the pump hub, move the power steering pump toward or away from the engine until the proper tension is reached. Do not pry against the reservoir as it is relatively soft and easily deformed.
4. Hold the pump in place, tighten the adjusting arm bolt and then inspect the belt tension. When the belt is properly tensioned tighten the mounting bolts.

1973 AND LATER V8 MODELS

1. Position a ruler perpendicular to the drive belt at its longest run. Test the tightness of the belt by pressing it firmly with your thumb. The deflection should be about 1?4 in. (6mm).
2. To adjust the belt tension, loosen the three bolts in the three elongated adjusting slots at the power steering pump attaching bracket.
3. Turn the steering pump drive belt adjusting nut as required until the proper deflection is obtained. Turning the adjusting nut clockwise will increase tension and decrease deflection; counterclockwise will decrease tension and increase deflection.
4. Without disturbing the pump, tighten the three attaching bolts. Fig. 2: Power steering belt adjustment (slider type)
   

Air Conditioning Compressor Drive Belt

1. Position a ruler perpendicular to the drive belt at its longest run. Test the tightness of the belt by pressing it firmly with your thumb. The deflection should not exceed 1?4 in. (6mm).
2. If the engine is equipped with an idler pulley, loosen the idler pulley adjusting boot, insert a prytool between the pulley and the engine (or in the idler pulley adjusting slot), and adjust the tension accordingly. If the engine is not equipped with an idler pulley, the alternator must be moved to adjust, as outlined under Alternator Drive Belt.
3. When the proper tension is reached, tighten the idler pulley adjusting bolt (if so equipped) or the alternator adjusting and mounting bolts. Fig. 3: Air conditioning belt adjustment
   

Thermactor® Air Pump Drive Belt

1. Position a ruler perpendicular to the drive belt at its longest run. Test the tightness of the belt by pressing it firmly with your thumb. The deflection should be about 1?4 in. (6mm).
2. To adjust the belt tension, loosen the adjusting arm bolt slightly. If necessary, also loosen the mounting belt slightly.
3. Using a prytool, pry against the pump rear cover to move the pump toward or away from the engine as necessary. WARNING
   Do not pry against the pump housing itself, as damage to the housing may result.
   
4. Holding the pump in place, tighten the adjusting arm bolt and recheck the tension. When the belt is properly tensioned, tighten the mounting bolt. Fig. 4: Air pump adjustment points
   

Power Steering Pump Removal & Installation 2.2L Engine To Remove:

1. Remove the upper cooling fan shroud.
2. Position a fluid catch pan under the power steering pump.
3. Disconnect the feed and return hoses from the power steering pump, then drain the excess fluid into the catch pan. NOTE: On models equipped with a remote fluid reservoir, disconnect and plug the hose(s) in order to prevent system contamination or excessive fluid loss.
   
4. Remove the drive belt from the pulley.
5. Install a puller tool such as J-25034, or equivalent onto the power steering pump pulley. While holding the pilot bolt, turn the tool nut counterclockwise in order to press the drive pulley from the pump. NOTE: When installing the puller tool onto the power steering pump pulley, be sure that the pilot bolt bottoms in the pump shaft by turning the head of the pilot bolt.
   Installing the pilot bolt
   
   Removing the power steering pump pulley
   
   Installing the power steering pump pulley
   
   
6. Unplug the electrical connection from the A/C compressor, unfasten the compressor mounting bolts and set the compressor to one side without disconnecting the lines.
7. Remove the front mounting bolts and the rear bracket nuts from the studs on the engine.
8. Remove the rear brace mounting bolt.
9. Remove the power steering pump from the vehicle.

To Install:

1. Position the pump to the vehicle and secure using the front retaining bolts to 22 ft. lbs. (30 Nm).
2. Install the rear bracket bolt and nuts. Tighten the retainers to 22 ft. lbs. (30 Nm) on 1994 - 97 models and 37 ft. lbs. (50 Nm) on 1998 and later models.
3. Install the A/C compressor.
4. Use a pulley installer such as J-25033 or equivalent to press the drive pulley onto the power steering pump. While holding the pilot bolt, turn the tool nut clockwise in order to press the drive pulley onto the pump. Check that the pulley is flush within 0.010 in. (0.25mm) of the shaft end. NOTE: When positioning the installer tool onto the power steering pump pulley, be sure that the pilot bolt bottoms in the pump shaft by turning the head of the pilot bolt.
   
5. Properly install the drive belt.
6. Remove the caps, then connect the feed and return hoses to the pump.
7. Properly refill and bleed the power steering system.
8. Test drive the vehicle.

4.3L Engine To Remove:

1. Remove the upper cooling fan shroud.
2. Remove the drive belt.
3. Remove the fan and clutch from the water pump.
4. Install a puller tool such as J-25034, or equivalent onto the power steering pump pulley. While holding the pilot bolt, turn the tool nut counterclockwise in order to press the drive pulley from the pump.
5. Safely raise and support the vehicle.
6. Remove the shield from the steering linkage.
7. Position a fluid catch pan under the power steering pump.
8. Disconnect the return hose from the power steering pump, then drain the excess fluid into the catch pan.
9. Safely lower the vehicle.
10. Disconnect the pressure hose from the pump and cap the open line.
11. Remove the filler neck tube.
12. Remove the power steering pump mounting nuts and bolts.
13. Remove the power steering pump from the vehicle.

NOTE: When installing the puller tool onto the power steering pump pulley, be sure that the pilot bolt bottoms in the pump shaft by turning the head of the pilot bolt.
Installing the pilot bolt

Removing the power steering pump pulley

Installing the power steering pump pulley

To Install:

1. Position the pump to the vehicle.
   • Tighten the front retaining bolts to 37 ft. lbs. (50 Nm) and the nuts to 31 ft. lbs. (41 Nm).
2. Install the filler neck tube.
   • Tighten the bolt to 15 ft. lbs. (20 Nm).
3. Connect the pressure hose to the pump.
4. Safely raise and support the vehicle.
5. Connect the return hose to the vehicle.
6. Install the shield on the steering linkage and lower the vehicle.
7. Use a pulley installer such as J-25033 or equivalent to press the drive pulley onto the power steering pump. While holding the pilot bolt, turn the tool nut clockwise in order to press the drive pulley onto the pump. Check that the pulley is flush within 0.010 in. (0.25mm) of the shaft end. NOTE: When positioning the installer tool onto the power steering pump pulley, be sure that the pilot bolt bottoms in the pump shaft by turning the head of the pilot bolt.
   
8. Install the fan and clutch on the water pump.
9. Properly install the drive belt. NOTE: Be sure to secure any hoses which may get in the way or rub other components.
   
10. Install the upper fan shroud.
11. Properly refill and bleed the power steering system.
12. Test drive the vehicle.

The power steering belt is on the front of the motor and is driven by the crankshaft. Below the steering pump is an adjuster bolt. It moves a pulley underneath the pump. To adjust the belt tension located the nut that tightens the adjuster pulley the the pump bracket . It is on the right side of the bracket , the pulley is on the left facing the back of the car. Loosen the pulley mount nut . You can now turn the adjuster bolt to move the pulley to tighten and loosen the belt for replacement. I recommend replacing the alternator belt at the same time. To do this , Unhook the negative battery cable, loosen the bolt holding block to the slide arm, reach under the alternator and loosen the lower mount bolt, not you can adjust the position of the alternator using the adjuster bolt.

You need to pull out the timing cover. 4-6 hours of work. Here is the step to remove the Cover, then you need to remove the Sprockets.

1. Remove the oil pan.
2. Remove the power steering belt if so equipped.
3. Remove the air conditioning belt, compressor and bracket if so equipped.
4. Remove the fan clutch (fluid coupling), with the fan and water pump pulley.
5. Matchmark and remove the crankshaft pulley(s). This bolt will be very tight. Use the counter-holding bar, properly installed, to hold the crankshaft while loosening the bolt. Use the pulley extractor or gear puller to remove the pulley from the shaft.
6. Remove the water bypass pipe.
7. Remove the fan belt adjusting bar. If necessary, remove the lower power steering bracket for access.
8. Disconnect the heater water outlet pipe.
9. Unbolt the timing chain cover assembly. Be careful to loosen only the correct bolts.

To install:

1. Install new gaskets over the dowels on the timing chain cover. Slide the cover assembly over the dowels and pump spline. Insert the retaining bolts and tighten them. Tighten the 8mm bolts to 9 ft. lbs. (13 Nm) and the 10mm bolts to 29 ft. lbs. (39 Nm).
2. Temporarily install the adjusting bar to the alternator. Install the adjusting bar to the chain cover and tighten the bolts to 9 ft. lbs. (13 Nm).
3. Install the heater water outlet pipe.
4. Install the water bypass pipe.
5. Install the crankshaft pulley and bolt. Use the counter-holding tool to hold the pulley and tighten the bolt to 116 ft. lbs. (157 Nm). If equipped with air conditioning, install the second crankshaft pulley.
6. Install the water pump pulley and fluid coupling with the fan.
7. Adjust the tension on the drive belts.
8. Install the air conditioning compressor bracket, compressor and belt if they were removed.
9. Install the power steering belt and adjust it.
10. Attach the oil pan.
11. Install the radiator.

To replace belt, first loosen the pivot and slide bolt on the steering pump, then use the jack bolt below the pump to move it. Belt goes (ccw) around outside of ps pump, under idler pulley, over a/c compressorover alternator over fan pulley, over crank pulley over water pump and back to the ps pump. best bottom (grooved area) should match with any pulley with grooves, back of belt should contact smooth pulleys. 9example...grooved part contacts ps pulley, smooth back goes under idler pulley) When finished the water pump should spin ccw (I've seen them put on incorrectly so it turns backwards) Tighten jack bolt till the long strech of belt is giving about 1" deflection, then lock pivot and slide bolts down.

1. Disconnect battery ground cable, then remove exhaust manifold heat shield.
2. Disengage power steering pump reservoir hose from pump bracket and engine lifting bracket, then disconnect return hose and reservoir pump hose from pump.
3. Allow fluid to drain into a suitable container, then raise and support vehicle.
   1. Remove lower belt guard, then rotate drive belt tensioner clockwise as viewed from direction shown, and remove accessory drive belt.
   2. Lower vehicle, then remove traction assist module bolts and position module aside.
   3. Rotate power steering pump pulley to gain access to each pump front mounting bolt, then remove three front bolts and one rear bolt and lift pump from vehicle.
   4. If it is necessary to separate pulley from power steering pump, proceed as follows:
   1. install power steering pump pulley remover T69L-10300-B, or equivalent, on pulley hub.
   2. Clamp hex head of tool in a suitable vise, then hold power steering pump in place while turning tool nut counterclockwise. Do not apply inward or outward force on power steering pump shaft, internal pump damage may result.
   3. Slide pulley from power steering pump shaft.
   1. Reverse procedure to install, noting following:
   1. If pulley and power steering pump were separated, install pulley on pump shaft using power steering pump pulley replacer T91P-3A733-A, or equivalent. Ensure threads on end of tool are fully engaged in power steering pump shaft; after pulley installation, ensure end of shaft is within 0.010 inch of being flush with pulley surface.
   2. When placing pump in vehicle, install rear mounting bolt first, but do not tighten until three front bolts are in position.
      1. Rotate drive belt tensioner clockwise as viewed from direction shown to install accessory drive belt.
      2. Refill power steering fluid reservoir and bleed system.

if u mean the fan belt ??,the power steering pump have tensioner undo the bolt and move to close to the belt if u wanna try on the belt on if dont ,try using the alternator tensioner after that tight it all up also make sure the belt is tighten up not slacken

3 bolts should be holes in the pully too go thru with an extension if their are no holes in the pully then you nee a power steering pump pully remover it can be rented for 5.00 at auto zone