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Re: cant figure out how to loosen AC belt, goes around
I would first determine where the bolts are for the ac compressor and loosen them until the belt slides off.
Or, I know this may sound goofy, but you can get a breaker bar and socket or a large wrench and turn the crankshaft while putting a large flat screwdriver in between the v-belt and one side of the v of the pulley, and TURRRRRN it slowly until the screwdriver wedged in there actually takes the belt off (with turning).
That's a trick to use, but inspect the belt for damage afterward, or replace the belt if it is damaged in the process, which it usually is not.
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there are 15 serpentine diagrams for the belt on vw engines to 2001
some have no ac , power steering etc
need engine size
you could try this the grooves are for driving pulleys so any grooved pulley it has to go around
flat pulleys run on the back of the belt so they will be idler pulleys
start at the crank and work to the left if there is a flat pulley between two grooved pulleys the back goes around it and so on
There are constantly questions on the routing of a serpentine belt for various makes and models of engines. The routing of a serpentine belt follows a set pattern, irrespective of the vehicle and by applying a little logic, replacing a belt is not a difficult job. First rule is that the inside of the belt where the ribbing is, goes around the outside of the grooved pulleys, and these are usually the pulleys that drive parts drawing some power, eg, alternator, power steering pump, AC compressor etc. The water pump is mostly driven by the outside of the belt and the other one or two smooth pulleys would be the tensioner and sometimes an idler wheel. To fit a belt, view and note all the pulleys that are in line with each other. Loosen off the tensioner pulley, lay the belt across the top two grooved pulleys and pass it over the crankshaft pulley at the bottom. Now pass it over the the other grooved pulleys and work it behind the smooth pulleys so that there is very little slack left in the belt. Make sure that all the pulleys in the routing of the belt have been engaged and that the belt is running straight. Now tighten up the tensioner until the section of the belt that has the longest straight run can be twisted through about 90 deg. without exerting too much force. Turn the engine over several times with the starter and check that the belt is still tight and running on its pulleys. A hint, before fitting the new belt, feel all the pulleys, especially the tensioner and the idler pulley for play in the bearings. Check the water pump pulley and look for signs of water seepage from the seal drain hole. Replace any parts that appear suspect. If you feel that you would be more secure with some assistance, feel free to post a question and any number of our experts will be only too willing to give you routing diagrams and hints on fitting a serpentine belt for your specific application.
an engine /vehicle model with information of power steering and ac fitment would help. Basically the grooves in the belt go into the grooves of the pulley and any idlers run on the back ( flat) part of the belt. If you have grooves in the belt running over a flat idler pulley then the belt is fitted wrong.
Then it is too loose. Double check but I'm pretty sure your adjustment is on the Alternator bracket. You loosen the bottom bolt which allows it to picot on the bracket, then loosen the upper bracket bolt and pull it outward to tighten it, lock the bolts back down and it should resolve your problem. If you have a spring loaded assembly that applies tension and you have to release to get the belt on and off then you may need to replace that or your not getting the belt all the way on. If even one of those channels on that belt don't line up properly the belt will work itself off. If you have a frozen or damaged pulley it will do this as well.
FOR THE 3.0L ENGINE IF YOU REPLACE AC BELT LOOSEN TOP IDLER PULLEY CENTER BOLT. IF YOU REPLACING ALTERNATOR AND WATER PUMP BELT LOOSEN ALTERNATOR ADJUSTMENT BOLT AND PIVOT BOLT.IF REPLACING POWER STEERING PUMP BELT LOOSEN POWER STEERING PUMP ADJUSTMENT BOLT AND MOUNTING BOLTS.****** FOR THE 2.4L ENGINE TO REMOVE POWER STEERING BELT LOOSEN TOP IDLER PULLEY.FOR ALTERNATOR AND WATER PUMP BELT LOOSEN ALTERNATOR ADJUSTER BOLT, PIVOT AND MOUNTING BOLTS.FOR AC COMPRESSOR LOOSEN LOWER IDLER PULLEY.
there is no spring tensioner on some of the 3.0 engines. See instructions below. I will paste a pic on the version that DOES have a tensioner at the bottom of this post.
3.0L Engine-Except SHO ALTERNATOR BELT WITHOUT AUTOMATIC TENSIONER
Loosen the adjusting arm and pivot bolts.
Turn the alternator belt adjusting screw counterclockwise until the old belt can be removed.
Remove the belt.
Install the new belt over the pulleys. Check that all the V-grooves make proper contact with the pulleys.
Adjust the belt tension, then tighten the adjusting arm and pivot bolts.
3.0L SHO Engine ALTERNATOR BELT
See Figure 2
Loosen the nut in the center of the idler pulley.
Loosen the idler adjusting screw until the old belt can be removed, then remove the belt.
Install the new belt over the pulleys in proper contact with the pulleys.
Adjust the new belt to specifications as follows: Turn the idler pulley nut to the right to tighten the belt to a specification of 220-265 lbs. (980-1180 N). Torque the idler pulley nut to 25-37 ft. lbs. (34-50 Nm).
POWER STEERING AND AIR CONDITIONING BELT
See Figure 2
Remove the alternator belt.
Loosen the nut on the tensioner pulley.
Turn the belt adjusting screw on the tensioner counterclockwise until the belt can be removed, then remove the belt.
Position the new belt over the proper pulleys, making sure the V-grooves are properly seated.
Install the alternator belt.
Adjust the power steering and air conditioning belt to a specification of 154-198 lbs. (690-980 N) with a belt tension gauge.
Adjust the alternator belt.
3.0L Engine (Except SHO) and 3.8L Engine VEHICLES THROUGH 1993 WITH AUTOMATIC TENSIONER
See Figures 4 and 5
Insert a 1 / 2 in. breaker bar into the square hole in the tensioner.
On the 3.8L engine, the tensioner has a1/2in. square hole cast into the rear of the tension arm directly behind the pulley. On the 3.0L engine, the1/2in. square hole is cast into the spring housing on the front of the tensioner.
Rotate the tensioner clockwise and remove the belt.
Fig. Fig. 5: 3.8L belt schematic-1993 shown
Install the drive belt over all the pulleys, except for the alternator pulley on the 3.0L engine for vehicles through 1992, or the idler pulley for 1993 3.0L vehicles.
Rotate tensioner counterclockwise and install the belt over the alternator pulley. Make sure that all the V-grooves make proper contact with the pulleys.
On the 3.0L engine, install the alternator belt for vehicles through 1992.
For 1993 3.0L vehicles, install the drive belt over the idler pulley.
crankshaft to a/c compressor belt idler pulley, to a/c compressor
crankshaft to coolant pump, and
crankshaft to alternator.
3 and 4 are side by side belts on the crankshaft, and each drive both the coolant pump and the alternator. See this page for pictures of the belts, but I haven't a layout for them. The pulley grooves align for each of the different belts, so it shouldn't be too too difficult to figure out which is which.
There is an idler pulley close to the power steering. Loosen the bolt that goes through the front of the idler pulley first. Then you will see the head of a bolt looking up at you. Turn the bolt clockwise to tighten and counterclockwise to loosen. The pulley is attached to the threaded bolt and it moves the pulley up or down as needed to adjust the belt tension. When the belt is replaced turn the bolt until the belt is tight. Remember to check the belt again after a few hundred miles. A new belt will stretch and loosen.
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.