Question about 2001 Oldsmobile Aurora

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Does the crankshaft have a woodruff key for the harmonic balancer?

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  • Oldsmobile Master
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Hi this depends on what harmonic balancer you are inquiring about, normal balancers do have a woodruff key,but the pulley type harmonic balancer only bolts to a cam hub on what ever it is connected to, such as water pump, etc etc... hope this helps

Posted on Sep 13, 2010

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  • Oldsmobile Master
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YES IT DOES.IT KEEP CRANK SHAFT PULLEY IN PLACE ON CRANKSHAFT.

Posted on Sep 13, 2010

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1999 Sirion. How do I remove the harmonic balancer?


You're best bet to get a full shop manual for this car is going to be on eBay Daihatsu Workshop Manual eBay


To get just the harmonic balancer off you will need a heavy duty gear puller; they do make harmonic balancer pullers but a really good gear puller will work just as well. Whatever you do, don't try prying it off with a bar, or hitting it with a hammer; you'll either damage the crankshaft or the balancer or possibly both.
It's also a lot easier to do when the motor is out of the car; you'll need a lot of room to work getting it off.
Back to the balancer; take all of the belts off, loosen the bolt in the center of the balancer (you will need to lock the flywheel so the crank doesn't turn when you try to loosen the bolt). Once it's loosened, take it out a couple of turns, but no more than that, attach the puller and start pulling it off, once you see it move, you can take the puller off, remove the bolt, you should be able to pull it off by hand now; if not, reattach the puller, and finish pulling it off. There is a little "guide pin" in the crankshaft called the Woodruff Key, you'll want to take it out and inspect to see if it shows any wear, or distortions, if so, replace it. Leave it out until you're ready to reinstall the balancer; it's how the balancer lines up with (and holds it in place) crankshaft. This is not a job for a beginner.

Jun 22, 2015 | Daihatsu Cars & Trucks

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Replacing the Crankshaft and Camshaft sensors on a 1991 and later Buick Park...


If your car is misfiring in a rhythmical pattern when you first start it up for the day or dieing when engine is hot, it could mean your Camshaft or Crankshaft sensors need replacement.
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Important, disconnect negative cable from the battery before doing any work on electrical system. Wear safety goggles.

Tools recommended:
Break Bar, Torque Wrench, ratchet driver and a full metrics ratchet socket set, one Q tip, large straight blade screwdriver, ratchet extension and adapters if needed.

First we'll start with the easiest and cheapest of the two sensors.

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Replacing the camshaft sensor:

The camshaft sensor is located on the right side of the engine, behind the water pump pulley.

1. Loosen the screws to the water pump pulley with a breaker bar before removing the serpentine belt. Always turn counter clockwise to loosen.

2.Remove the serpentine belt via the belt tension-er.

3.Use a regular ratchet driver to finish removing the belt pulley from the water pump.

4.Remove the bolt holding the camshaft sensor in place and disconnect electrical connector. Secure the connector with a clothes pin so you don't lose it down in the engine compartment. Clean around the sensor to avoid getting dirt in the engine.

5. Pull the camshaft sensor straight out with a slight twisting motion.

6. Lightly lubricate the O-Ring on the new sensor with fresh motor oil, and install in the engine.

7. installation is the reverse of removal.

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Crankshaft
Sensor:

1. Jack up the front passenger side of the car and safely support it on jack-stands.

2.Remove the tire, remove the inner tire well splash guard cover.

3.Before removing serpentine belt, loosen the center bolt on the harmonic balancer/vibration dampener. (crankshaft pulley)

4. Remove serpentine belt via the belt tensioner.

5.Finish loosening and remove the bolt from the harmonic balancer.
Have an assistant help you, using care not to let the weight of the harmonic balancer rest on the bolt as it can be damaged. Gently pry it of with a straight blade screwdriver. Leave the woodruff key in the crankshaft. Use care to not damage the crankshaft during removal as oil leakage could result. Mark the relationship between the crankshaft and the pulley, so you will be able to line the pulley up just right during re -installation.

6. Disconnect the electrical connector from the crankshaft sensor, secure the connector with clothes pin and loosen the bolts holding the sensor pedestal in place.

7.Separate the old sensor from the pedestal, and install the new sensor, just the same way the old sensor came out. Using the suggested crankshaft sensor alignment tool on the back of the harmonic balancer, making sure the fins on the harmonic balancer pass through the sensor's slot and don't hit it. If any fins on the back side of the harmonic balancer are bent, damaged, or missing, replace the harmonic balancer assembly.

Installation is the reverse of removal. It is imperative the crankshaft sensor be aligned properly before engine start up to avoid damage. Use care not to over tighten bolts during installation. Always tighten to manufacturer's recommended torque.

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Harmonic Balancer/Vibration dampener



on May 24, 2010 | Buick Park Avenue Cars & Trucks

1 Answer

Snapped crankshaft pulley bolt


does this model have a woodruff key in the pulley mated to the crankshaft it mounts to? if so, the key may be worn down.

Mar 21, 2014 | Honda Odyssey Cars & Trucks

1 Answer

Harmonic balancer bolt is torqued to specs,but there is still play in the pulley.


23880111-k0la5llha3vhnr1ljv3tx424-5-1.jpgYour pulley has a woodruff key like the one in the photo. In order to have zero play, you need to replace the key and the harmonic balancer

Mar 21, 2014 | Honda Odyssey Cars & Trucks

1 Answer

Removing harmonic balancer


First, you have to loosen the crank pulley center bolt. Best way is with an impact gun-bolt is very tight. If you have to use a breaker bar to loosen the bolt, you will have to devise a way to hold the crankshaft from turning backward while loosening it. One method is to remove the starter and wedge a piece of wood against the flywheel, preventing it from turning, while you are loosening the center bolt.
From the beginning: raise and block the side of car that the front of engine is towards. Remove the wheel and the inner fender splash shield. Remove the belts. Remove negative battery terminal, remove starter. Wedge the flywheel so it won't turn backward. Loosen and remove the center bolt. Some harmonic balancers will slide right off the crankshaft now, some are on very tight, if you can't wiggle it, tap it, and get it to move, then buy an inexpensive harmonic balancer removal puller, just a few bucks, easy to use, will save balancer from trying to hammer it off. All you need is enough room to mount up the puller to the balancer, and get the balancer moving off the crank.
Some engine lay outs there isn't enough room: then you really have to get creative, either lowering engine enough to get to pulley, or raising engine out. But most engines are positioned where the crank pulley can come off easily, with enough room to get the puller on.
The pulley may have a woodruff key in a slot on the crankshaft, and a corresponding notch on the pulley, for proper positioning of the pulley to crank. Don't lose the woodruff key.

Sep 01, 2013 | Pontiac Trans Sport Cars & Trucks

1 Answer

1988 Old Cutlass Ciera 3.8L noise under hood... all the time except when foot is pressing gas pedal down. When car shuts off it goes click clickclick click click (gets quieter). When serpentine belt off, I...


The balancer is bad, or it has come loose. There is a little metal wedge piece called a woodruff key that holds the balancer in place, and then the crankshaft center bolt keeps the balancer on tight.
There should be no wobble or movement at all of the harmonic balancer. Take it off, it may still be alright, but find out why the pulley moves on the crankshaft. Maybe the key is missing. This should not be an expensive repair-it's not a problem with the motor, just that balancer pulley.

Aug 15, 2013 | Oldsmobile Cutlass Ciera Cars & Trucks

1 Answer

Unable to pull the harmonic balancer


need a harmonic balancer pulley you can rent them at your local auto part store

Feb 20, 2013 | 1999 Cadillac DeVille

1 Answer

Harmonic balancer bolt came off while driving


Not all of them have a woodruff key, but yours may still be on the crankshaft if you had one. At one time, someone had that pulley off and did not tighten the bolt tight enough-they need to be very tight according to specs, over 100 ft. lbs. of torque when tightening.
Check the balancer for damage and the crankshaft where it sits on. If no visible damage, I think you could use it. Did you go back and pick up the bolt and washer? You need them, or a duplicate from a salvage yard. Now fit the balancer pulley on the crankshaft (its the crankshaft, not the camshaft). It only goes one way. If yours slides on any which way, you have lost the woodruff key, and will have to get one-it would fit in a slot on the shaft, and the notch in the pulley rides over the woodruff. if yours is like that, fit the pulley on, tighten the bolt down solid. You may have to wedge something against the pulley while tightening the bolt to keep the crankshaft from turning. Once you get it on, then fit your belt back on, and you're good to go.

Nov 27, 2012 | Cars & Trucks

1 Answer

1999 Ford Taurus. Can see crankshaft spinning fine coming out of block. Nut on end holding harmonic balanced spinning fine too. Harmonic balancer doesn't spin. How to fix? Do I need to pull the engine to...


There is a key way in the crankshaft and the balancer with a woodruff key that keeps it locked in place. The woodruff key resembles a half moon shape. You will have to remove the balancer to see what kind of damage there is and go from there.

Jan 02, 2011 | Ford Taurus Cars & Trucks

2 Answers

Harmonic balancer


what are the steps to removing a harmonic balancers

Oct 18, 2008 | 1997 Chevrolet Corvette

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