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How can you get the crankshaft to stop turning while changing your harmonic balancer?
Wiki User
∙ 19y ago
You have to deliver instant torque to the crankshaft bolt via an electric impact wrench with the proper socket attached or an air impact wrench. Keep the belts attached also helps too. But remember that once you have loosened the pulley you need to take proper care as the belts are probably under tension and that needs to be taken care of safely. Hope this helps. One way to prevent the engine from turning over is to turn the engine over by hand to the start of the compression stroke on any cylinder then fill that cylinder with oil and put the spark plug back in. That creates a condition of "hydraulic lock.
Wiki User
∙ 19y ago
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Can a rusted harmonic balancer cause the engine not to turn over?
No, a rusted harmonic balancer will not prevent the engine from turning over.
What is the proper way to remove harmonic balancer on 67 lemans 326 motor?
After removing the harmonic balancer retaining bolt and washer (you may need to immobilize the crankshaft by securing the flywheel ring gear), you will need to use a tool known as a wheel puller or a hub puller, such as a KD2251 as made by KD Tools. The tool consists of a long center bolt that runs through a center threaded hub attached to three adjustable splayed arms with holes in each at the working end. By bolting each arm to the existing pulley retention bolt holes in the harmonic balancer and then turning the long center bolt of the hub puller clockwise into the center of the crankshaft snout, the harmonic balancer will be "pulled" from the crankshaft. Be certain to utilize a wide centering point in the end of the long center puller bolt to prevent damage to the threads in the crankshaft snout.The harmonic balancer can be reinstalled by utilizing various length bolts which fit the threaded hole in the crankshaft snout, a heavy washer, and appropriately sized spacers. After carefully aligning the harmonic balancer on the end of the crankshaft snout, using a longer bolt, tighten (clockwise) the bolt into the end of the crankshaft. When this bolt runs out of travel remove the bolt and replace with a shorter bolt or employ shims. Repeat until the harmonic balancer reaches the shoulder on the crankshaft. reinstall the harmonic balancer retention bolt and washer, tightening it to the required torque specification.All of this is true....but Pontiac did not use an interference or press fit balancer. Most of the time once you have removed the large bolt in the center they can just be pulled right out. Installation is usually done by just pushing it back on. There are the occasional tough ones though that will have to be pulled with a puller.
How can I get the crankshaft pulley off a 1988 acura legend without the crankshaft turning?
crc an a whole lot of effort, they do come off but its not easy.its also just as hard to put back on at the correct torque, try harmonic balancer puller or breaker bar method
Location of crankshaft sensor on 92 Pontiac Trans Sport?
On 1990 through 1995 General Motors 3.8 L engines, the crankshaft positioning sensor was located under the harmonic balancer on the left side of the engine. The harmonic balancer is attached to the main crankshaft and must be removed through an access hole located in the right passenger wheel well. Remove the right front passenger tire after jacking up in stabilizing the vehicle. Inside the wheel well is a small plastic panel that can be removed to access the harmonic balancer mounting bolt. Remove this bolt from harmonic balancer. Using a small wheel puller on the harmonic balancer, gently tap and tighten the wheel puller to remove the harmonic balancer itself. Caution -- be very careful while doing this! The harmonic balancer has a soft aluminum rings attached to it that can easily be bent during the removal process. If they are bent, they will not work properly and will damage the crankshaft positioning sensor! Once the harmonic balancer is removed the crankshaft positioning sensor and wiring is exposed for replacement. Follow the wires leading out of the crankshaft positioning sensor to the electrical wiring coupling. Uncouple this union to disconnect the electrical wires of the crankshaft positioning sensor. Carefully clean the area around the old sensor while still mounted on the vehicle. He is a permanent magic marker and carefully outline for Mark the position of the harmonic balancer before removal. This Is Very Important! If the new crankshaft positioning sensor is not in the precise position as the old one removed, it can cause a no pulse situation to the mission module, which produces the sparkplug timing and firing to the sparkplugs. Crankshaft positioning sensor is held on to the engine by two bolts. Carefully remove these two bolts and the old sensor. Clean the area behind the old sensor with steel wool to make a clean surface for the new sensor mounting. But the new crankshaft positioning sensor in place were the old sensor was removed, follow closely the marks made earlier to position the new sensor at the right location. Mount the new sensor with the two bolts that were removed. Attach the electrical wires from the new sensor following the same path as the old wires on the sensor removed and reattach the electrical coupling to the wiring harness. Carefully replace the harmonic balancer back in place on the crankshaft. Do Not Force the harmonic balancer if you feel any resistance! The circular aluminum fins attached to the harmonic balancer may be pressing against the crankshaft positioning sensor if the crankshaft positioning sensor is not aligned correctly. If you feel any resistance from the harmonic balancer you'll have to climb into the engine area and carefully check to see if the new crankshaft position sensor is in the right location to allow the aluminum fins on the harmonic balancer to fit between slots on the new crankshaft positioning sensor. If the slots do not accept the fins on the harmonic balancer, slightly loosen the two mounting bolts for the sensor and reposition it where you can clearly see that the slots will accept the aluminum fins on the harmonic balancer. Once you have done this, lightly slide the harmonic balancer back into place and check again at the aluminum fins fit cleanly into the slots of the new crankshaft positioning sensor. With the sparkplugs removed, it is possible to rotate the crankshaft and harmonic balancer clockwise to ensure the aluminum fins pass cleanly through the slots of the crankshaft positioning sensor. Once you have verified this, re-tighten but not over tighten, the mounting bolts on the crankshaft positioning sensor. Reinstall the harmonic balancer on the crankshaft and replaced the bolt that holds it to the crankshaft. Be sure to tighten this bolt securely. Again and rotate the crankshaft clockwise by hand very slowly. Listen and feel for any resistance at the harmonic balancer to this turning. If you hear any, remove the balancer and check the crankshaft positioning sensor alignment again. If no resistances felt, the job to be done. Using a cheap spark detection tool, available at most part stores, you can have someone cranked the engine and check for spark plugs. If you have installed the new crankshaft positioning sensor correctly, have it aligned correctly so that the aluminum fins on the harmonic balancer ride smoothly through the slots, you should see spark now at the plugs. This is assuming of course all of the components, the ignition module, the coil packs, and electoral connections are in good working order. When the engine is running and the harmonic balancer rotating on the crankshaft with the aluminum fins sliding through the crankshaft positioning sensor, this provides electrical control pulse to the ignition module, that tells it where the crankshaft position is and regulates when the spark to each plug is released. In this Distributorless design, the crankshaft positioning sensor is a simple Hall Effect switch. While not very complex, it is an integral part of the Distributorless SPARC system for the vehicle and often is suspect to failure. The failure of the crankshaft positioning sensor causes a no spark situation at the plug and the engine just stops running. This can happen at any time. Meaning, you can be driving along, the engine is running fine and then it just suddenly quits! After a short period of time, you can suddenly restart the engine and it runs fine again. This condition generally is caused by the crankshaft positioning sensor overheating and stops producing the needed control pulse to the ignition module which controls the spark at the plugs. Many mechanics misdiagnosis this problem when the vehicle is brought in. 1990 to 1993 onboard computers do not have a trouble code for a bad crankshaft positioning sensor. 1994 and up vehicles have a different onboard computer, called OBT2, and a trouble code for this condition. An intermittent crankshaft positioning sensor can also cause erratic engine operation, from rough idling and power loss, to poor gas mileage. As a general rule, if your vehicle as the 80,000 to 125,000 miles on it, it is a good preventative measure to replace the crankshaft positioning sensor, even if you are experiencing no problems with it. The crankshaft positioning sensor only costs about $35 at most part stores but because of its critical role, it is a part not be ignored in preventative maintenance. I hope this helps some people resolve a serious condition I call The Sudden Stop Syndrome. Otherwise, a 3.8 L V-6 engine has been a fairly reliable engine for General Motors. If you have any questions, be sure your vehicle is serviced by a competent mechanic. C.08 - DERICKUSA1
How does the harmonic balancer tighten on a 1989 jeep Cherokee Laredo without turning the crank over?
Easiest way is with an air impact. There are strap clamps available that would go around the harmonic balancer that would hold it while the bolt was tightened.
How do you take of a harmonic balancer on 94 jeep wrangler 6cyl?
some wut of an Answeryou take off the center bolt then you rent/buy a harmonic dampener puller/installer and screw the three 3/8 bolts into the harmonic balancers body and pull it off by turning the center stud wich seperates the balancer from the crankshaft. and follow the same steps for re-installation now you are pressing the new balancer on the crank make sure the keyway on the shaft and the pulley are aligned or its gonna cost you a new crankshaft and if you replace the crankshaft might as well re-build the engine. It's obvious that before any thing you have to remove your belt/fanclutch and fan/ fan shrowd or you will not have any room to work.94 grand Cherokee Laredo 4.0berto
Which one of the five Timing marks on a 305 Chevy harmonic balancer is the top dead center mark?
That would be the biggest and widest mark. Are the first mark on it when turning it clockwise to the pointer.
What causes the car to vibrate when turning the wheel either left or right out of a parking space?
The power steering pump is working hard and the engine is only idling. It could be the harmonic balancer
How do you remove the harmonic balancer on a 6.6 liter duramax?
36 mm 12 pt socket and breaker bar . they sell speciality tool too hold fly wheel from turning. (dealer)
How camyou tell spark plug numbers on the distrubitor cap of a 1990 cadillac de ville?
you have to set your first cylinder to top dead centre by manually turning the crankshaft until it is at the right point on the timing marks (these are located on the harmonic balancer for caddys i believe) then check where the distributor rotor is pointing and you can figure it out from there will be either clockwise or counter im not sure
Which way do you turn the harmonic balancer bolt?
Clockwise, unless it is one of those other cars that you have to turn it Counter-Clockwise: without knowing the exact year, model, and engine of the vehicle it is impossible to answer this question. A typical American made vehicle would require turning the balancer bolt counterclockwise to remove it.
How do you rotate the flywheel on a 1986 F-150 to get the starter to engage I want drive it to the repair shop.?
You Can Rotate The Engine By Turning The Harmonic Balancer, ( Crankshaft Pully Mounts On It ) By Using A Socket And Extension That Fits The Nut Holding The Balancer On It Will Be Rather Large Maybe 1 &1/2 Inch Or More. You Can (maybe hold the fan belt tight enough & turn the engine this way. Before I Did All This I Would Make Sure Its The Ring Gear & Not The Starter Drive. Good Luck
