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My ac compressor pulley has seized i want to bypass it with a belt so i have power steering. What size belt should i use?

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6ya6ya
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Posted on Jan 02, 2017

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chiquititas
  • 1010 Answers

SOURCE: Needing to remove ac compressor to install ac bypass pulley

There are a couple of ways to approach this. I just did one of these for a friend. The A/C pump seized while running. The serpentine belt broke. Crazy things can happen to other components when this occurs. In this case the broken ends of the belt, I think, whipped back around on itself on the crankshaft pulley and one of the other pulleys in the belt circuit and devastation occurred. 1) It snapped the power steering pump bracket in two. 2) It took out the alternator. 3) And not to be left out, GOODBYE cool blowin air conditioning. Time to decide what to do. He had to order the power steering bracket from a dealer (junk yards were cleaned out). He decided to replace the power steering pump with a remanufactured unit and new hoses (parts houses are much cheaper than dealer parts folks). You'll need a pulley remover that you can usually borrow (with a deposit) from some parts houses. He HAD to buy the alternato ya gotta have juice. I have been using the name, "parts houses" . (Can we use specific company names in this forum MR./MS. Editors ? I Feel I need to for the sake of all of us that come here for correct information.) THE ANSWER : DO you want to drop the bucks into fixing your A/C ? NO ? It can be involved and costly depending on how good of a do it yourselfer you are. New pumps are spendy. Then, if you use the older refridgerant you'll need a conversion kit and blah blah blah. YOU have opted for a bypass pulley. COOL ! Errrr...not actually. It's coming out. The bolts that hold the A/C pump to its bracket come out from BEHIND the bottom of the unit. They are long and won't clear the intake manifold,at least not easily. Take the bracket bolts out from the front. Take the hose from the pump to the dryer apart (at the dryer). Do you want to preserve the system for future repair? If so, cover that connection on the dryer to protect it from the world. With a sharp blade, cut the other hose coming off the pump right behind the grill. Or, try to take the fitting apart at the evaporator. Cutting it is easier. Plug the cut off end if ya want. Future repair thing. Rotate the pump forward so you can either take the bolts out,or remove the pump and bracket as a unit, with the lengths of hose attatched to the pump. This gets all that hose you no longer need out of the engine compartment. NOW THE BYPASS PULLEY. He found a pulley from NAPA. IT DOES NOT WORK ! YOU DO NOT NEED IT ! Nothing against NAPA. I have bought good parts from them before. Maybe their supplier does not know. The pulley is supposed to drop into the A/C bracket in the concave recess that the pump once occupied. IT WASN'T EVEN CLOSE. Chevy released THREE versions: Poor Boy-no power steering,no A/C. MIDMan-power steering,no A/C. Rich Guy-power steering,with A/C. SO....... If you have power steering, the A/C pump removal just put you into Midman status. Stop at your local chevy dealer, ask them to print you a belt routing diagram from the computer parts book. It shows all three versions. Go to your local,,,,,,,"PARTS HOUSE", tell them info...year,make,engine size, REMEMBER.. IT NO LONGER HAS AIR CONDITIONING. YOU'LL GET A SHORTER BELT !! IF, they sold you the bypass pulley.....GET YOUR MONEY BACK !!! Use the diagram you got. The belt is routed a little different since you lost the A/C pump and the idler pulley with it's bracket(that you can keep for future repair or trade in for to be made into beer cans) Also remember that without a belt on, the tensioner pulley is swung over to the end of it,s range of motion. When you get the belt routed correctly you have to put a wrench on the bolt on the pulley and turn hard to compress the spring. (COUNTERCLOCKWISE) The bolt is left hand thread so it won't come loose while ya reef on it to get the belt swung onto the ALTERNATOR LAST.<<<<<<GOOD LUCK !!! ADDED NOTE: Would that bypass pulley work on say...an "88" or "89" or "90" ? > I DO NOT KNOW. DID CHEVY change the size of the pump bracket after 87 ? We will be letting the good folks at NAPA know what we ran into and how we fixed it. We also will ask for a refund on the wrong part for the job. IT DOES NOT FIT AN 87! WE DO KNOW THIS..... IF the belt had just broke in half and safely dropped away, then all those parts wouldn't have been needed and the cost of the fix is FOR A SHORTER BELT and a little sweat to remove the A/C pump and bracket. The A/C NEVER WORKED ANYWAY

Posted on Jun 23, 2008

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SOURCE: NEED TO ROUTE SERPENTINE BELT AROUND SEIZED AC PULLEY ON 2001 TAU

Some Parts Stores Have A/C Bypas Belts you should call around

Posted on Jan 28, 2009

emissionwiz
  • 76109 Answers

SOURCE: need to bypass the a/c compressor with pulley

see the dealer for the delete AC pulley, that is the only place to get it.

Posted on Aug 28, 2009

  • 3 Answers

SOURCE: A/C compressor pulley is seized and burning the serpentine belt

yeah its seized up[ and they dont make a repair kit for that one either. they have at most auto parts stores an ac bypass pulley . its a bracket and pulley so you can bypass the factory ac unit and still run the factory belt. but if you decide to change the ac unit there are 5 bolts holding the unit down .have the system evacuated.loosen belt and drop down out of your way. take the ac lines off the compressor and set aside . there are two bolts on top in front and there are 3 bolts in back on top tieing together a triangle shape mounting plate , take all 5 loose and out.disconnect ac wires (snap clip) lift , lightly pry off old ac unit.set aside and reverse the procedure to install your new or salvage yard ac unit. refrigerant chargers can be purchased from wall mart ( there cheaper) at $30. roughly 2 1/2 cans will completely fill the system just follow on label instructions. its all easy to do if you can use wrenches and have a little knowledge. and you get the satisfaction of doing it yourself. and save a bunch of $ along the way.

Posted on Oct 31, 2009

cool78259
  • 228 Answers

SOURCE: ac compressor pulley siezed, wondering

there is a site called monster auto parts. com they sell a bypass pulley that you replace your ac compressor with. it's about 35 dollars, but you may find one. less shipping charges locally where you live at an auto parts store. good luck!

Posted on Jan 04, 2011

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Since they weren't sold without ac that info isn't available. You are going to have to measure it. Remember that the tensioner is going to put pressure on it so you need to account t for that. If the old belt is still on it i would use a piece of twine or fishing line and run it just like the belt is but bypassing the ac. The measure it. Be careful not to stretch the string.

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If the belt is not turning, there will be a seized pulley. Possible alternator.. power steering.... water pump... tensioner.... idler pulley ... AC compressor seized. The belt will need to be removed and all the pulleys spun by hand to isolate tone that may be seized

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If the pulley on the compressor will not turn freely, then yes if a bypass pulley exists you would need to use it in place of the compressor.
If the compressor pulley turns but the compressor is locked up, just unplug the compressor clutch.

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You can bypass the ac compressor by using a 82" belt. Feed the belt from the back of the engine at the water pump. Disconnect the power steering line at pump. It's a lot easier if you use some type of hook to hold/maneuver the belt. (I used a bent rebar) Follow this routing diagram I created. Bam! No more ac problems!
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1 Answer

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The cause of this is that the roller bearing that the AC compressor pulley turns on is frozen up, the bearing can be replaced but you will need to buy the pulley assembly to get the bearing and you will need a special puller to remove the pressed on pulley. As far as finding a proper belt size to bypass the compressor that is nearly impossible to do, you may get the measurements right but in most cases the belt size you need will not be available, When the factory builds a car or truck with "AC Delete" they install a bypass pulley and the same belt is used for both with and without AC. The cost to replace the bearing is low, and that would be the by far the easiest thing to do here. You can buy the AC tool you need online, just google the year and make.

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the defrosters run with the ac compressor running whenever its 49 degrees and higher. it does that to get rid of humidity faster. the pulley works off the ac clutch behind the pulley so you have a locked up clutch. find a belt to fit by bypassing the ac compressor will do if you like

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What size of belt can I use on a ford Windstar 2000 3.8L if i want to bypass the a/c compressor.


You may have a problem finding that info out, but an easy way to do it if you can see and reach it, is to make a mark with chalk on the power steering pulley, as well as crankshaft pulley, then run a string or similar from the mark on power steering pulley, around AC compressor pulley, and down to mark on crankshaft, then measure that distance. Now run same string from power steering pulley mark, directly to crankshaft pulley mark, (by-passing AC pulley), and measure that as well. Subtract by-passed length from, non by-passed, will give you the difference in length. Now when you go to parts store for new belt, they can give you a belt that is that much shorter than original one listed. The actual belt part # usually tells the length in it. Just subtract your difference from original, and ask for that length, same design. Sounds pretty complicated, I know, but it really isn't. You used to be able to just say" give me the one for the same vehicle without AC", but most vehicles have AC now, so it isn't quite that easy anymore. Make sure you take a good look and be sure you have the clearance so belt doesn't hit/rub on AC pulley during operation.

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On a 2001 saab 93 turbo can can you bypass the ac compressor or is there a bypass pulley


You can bypass both the AC compressor and the middle serpentine idler pulley with a 6PK1790. The middle pulley is bypassed by running the belt straight line from the upper rear serpentine idler straight to the power steering pulley, then over the water pump (the smooth pulley powered by the back side of the belt) and down to the engine drive pulley (harmonic balancer), bypassing the AC compressor) This works fine. On 9.5 models, the same basic idea, but a slightly different sized belt.

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2 Answers

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Go to the parts store tell them the issue and ask if there is a shorter drive belt that will allow you to bypass the AC compressor pulley

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hi there it sounds to me that the bearings are going bad on your ac/c compressor

you can bypass it by getting a smaller belt
to get a size you can take a piece of string or rope and go around the remaining pulleys like alternator power steering and crank shaft then tie a know take it to napa and have them match as close as possible then install that belt this will solve your problem until you replace the compressor
the other way is go to a salvage yard look for you make and model without a/c there will be most likely a pulley and bracket in the place of the a/c compressor
take a picture of the set up and take the pulley off including the mount bolts and then remove th compressor on your car and install the pulley and you can use the same belt
don

Sep 12, 2008 | 1991 Oldsmobile Cutlass Ciera

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