crankshaft pulley wobble

The early B6 16v motors had a problem with the key way failure, this was solved by using a longer bolt to hold the lower pulleys on. here's a couple of videos: First one has only the single belt for air pump/water pump installed. The use of a new crank bolt is mandatory, as bolts do stretch and lose their holding strength if re-used. Found inside – Page 4-90CRANKSHAFT PULLEY, TORSIONAL DAMPER, AND TIMING GEAR COVER ASSEMBLY MAINTENANCE 4.9.1. ... (4) Check torsional damper wobble as follows: (a) Attach magnetic base of dial indicator to magnetic surface near torsional damper. Oct 11, 2015. Bought a new OEM harmonic balancer and still had wobble. makes a noise. If there is wobble the balancer will crank and fail eventually and scatter chunks of iron everywhere puncturing whatever it hits. MasterMatt209 Proven Member. When the clutch is disengaged, is it just the lack of the transmission keeping the engine from vibrating that is making the crank pulley wobble bad enough to rub the frame? For that wobbly pulley, I would take a closer look at the crankshaft. Clearly the XKR pulley contains the supergharger pulley as well, but that is a huge difference. Found inside – Page 3952 ) from crankshaft pulley of models without front pto ; coupling ( 6P or 6PH – Fig . ... Outer ring wobble should be less than 1.50 mm ( 0.060 inch ) for models without front pto ( damper has standard solid mounting to crankshaft ) . What must be done to solve this problem. OEM Crank pulley for the 55k M113k AMG engine. I can get a second hand pulley for £220. Found inside – Page 14-37( 1 ) Damper and crankshaft pulley shall be installed after engine has been assembled and water pump installed . ... ( 5 ) With a dial gauge mounted to front cover , check vibration damper eccentricity and wobble . Just wanted to confirm, had someone rev up the engine, pulley looks as smooth as can be at higher than idle rpm. THe crank vs the balancer: If it is a lazy wobble, the crank snout is usually bent. For a better experience, please enable JavaScript in your browser before proceeding. God (and jaguar) only knows why this is so expensive. An aftermarket crank pulley can be used to increase the horsepower of a vehicle. These pulleys are designed to weigh considerably less than the pulleys that come standard out of the factory, largely because they do not have harmonic dampeners installed. Found inside – Page 3-110CRANKSHAFT FLANGE REMOVAL THIS TASK COVERS: Removal INITIAL SETUP APPLICABLE MODELS TOOLS (Contd) All SPECIAL TOOLS 1-1/16-in. socket, 3/4-in. dr. ... NOTE Check and record crankshaft flange runout and wobble (para. The rubber insert of the harmonic balancer can also fail. Found inside – Page C-543Remove the fan belts and remove the accessory drive pulley . 3. Use a screw - type puller to remove the balancer - pulley assembly . V8 1. ... Be sure that the polishing is not overdone , or the damper will wobble on the crankshaft . Discussion Starter • #21 • May 15, 2014. Jul 23, 2014 THere is a Crankshaft Pulley for an XK8 on ebay for £40. The bad news is that the crank shaft pulley was wobbling around all over the place! In particular, pay attention to the belt drive. 2016-01-22T09:14. 1) Engine rebuilt and assembled my self. Found inside – Page 310If the pulleys are out of alignment the belt will wobble . 4. Check the belt and pulleys for traces of oil . Oil will cause slipping . Crankshaft pulley Figure 16-32 . Using a belt tension gauge . I dow Figure 16-33 . you'll wear down the belt quicker and unevenly and you might wear out the crankshaft seal behind the pulley, but it should not affect the crankshaft at all. 3. when I checked the new pulley by the same method it was so much better than the original less than 0.3mm wobble (Was … See the service manual for specks and guidelines. What is Considered High Mileage for an RV? Yeah, that's not the usual pulley wobble caused by a loose crank bolt that trashes the keyway, crank snout and timing sprocket. It was so bad that the fan blade actually pu But that doesn't necessarily mean it's the crankshaft pulley though does it? But if someone was working on the engine, they may have forgot to torque the bolts properly and it worked its way loose. Found insideThe axial plate is often called a swash plate or wobble plate. ... The compressor crankshaft is driven directly or indirectly off the engine crankshaft by means of pulleys and belts (Figures 8-5, 8-6, 8-7 and 8-8). After re-installing the crank pulley following a water pump job, I noticed it has a slight wobble. If it is bad then it can cause a loud knocking noise. I then took off this little piece of like silicon / caulk that looks like someone tried extending the key, a bit. Joined: Dec 23, 2012 Likes Received: 66 Location: Hastings, East Sussex. Found inside – Page 42Also , the clutch can be a good diagnostic tool for determining whether the crankshaft ( camshaft on the H model ) has too much ... When the belt pulley or PTO shaft is engaged , it should not wobble or emit strange or loud noises . 6.Excessive bearing wear. cheers. The harmonic balancer should not wobble at all. Jump to Latest Follow 1 - 2 of 2 Posts. Then when the old one is off, transfer the bolts to the old one. Do Not Sell My Personal Information -, By logging into your account, you agree to our. I don't think it's loose, just not perfectly aligned maybe? Perhaps when they were installed (or re-installed following service), some dirt was trapped under the pulley … steve. ABF crankshaft pulley wobble? twolitrepinto Forum Member. Skaamp - All Rights Reserved - A Preon One If it is a fast/dramatic wobble, then it is usually in the balancer itself. Just picked up another Yukon. For the crank pulley to rub against the frame.? The list on the R Pulley is £507 + VAT. My crankshaft pulley is wobbling around and shredding belts. And the outer ring has a bit of a random slight wobble. You won't be able to tell without a full tear down, but if the crank wobbles, I'd recommend a full rebuild of the engine with replacement of all moving parts, providing the supporting web of the block hasn't been damaged. I have no idea, I really don't think its the crankshaft bolt. The engine is running fine which make me think not. Crankshaft pulley wobbling may be a first sign or the final sign of extreme wear and tear. Step 4: Remove the crankshaft pulley. Replaced the belt on the pulley and had the passenger crank the engine briefly. Oct 26, 2015. Posted by kstef90 on Apr 21, 2009 Gave it some hammer therapy setting on a old piece of heavy shafting, and straightened it out, dressed with a file, and eliminated the wobble. Replacement pulley with bearing solved the problem there. It may be bent, or the balancer may be. If you purchased a longer crank bolt, start threading this in now and pull the pulley on about a 1/4 or 1/2 an inch and remove the longer bolt. 100% sure I seated it properly. My crank pulley is straight with no wobble. I think it's a little hard to see in the video but the whole engine shakes a bit. Need help Wobble in my crankshaft pulley. Read full answer Shown as cracking, bulging or shrinking instead of forming a smooth layer level with the metal components. Found inside – Page 3-440( 4 ) Coat capscrews with oil and secure damper assembly to crankshaft . ... NOTE Use accessory drive pulley nut to rotate engine . ... ( 10 ) Rotate crankshaft so that indicator measures amount of damper wobble over a 1 in . The crankshaft pulley also wobbles. The rubber is there to protect the crank shaft and smoothen out the pulses(not a fan of the solid ones ). JavaScript is disabled. 96LSteg Jemel. Found inside – Page 18The crankshaft pulley woodruff key can wear, causing eventual crankshaft failure. ... considering a car with the four-slot pulley, you can check for wear by looking for wobble from the crankshaft pulley whilst the engine is running. Max Umbarger: Service & Maintenance: 2: 06-10-2002 09:36 AM: Crank Pulley Wobble: rexxman Re: Noticed crank pulley wobble during oil change. Gotta remember its a counterweight for the crank as well, so if that thing does wobble, it'll shake the engine, and not the same way it would shake with the balance shaft missing. This was on the short nose crank. Found inside – Page 3-183GEAR COVER ASSEMBLY INSPECT / REPAIR ( CONT ) 3 Install crankshaft pulley ( 12 ) and vibration damper ( 13 ) as follows : a . ... Replace damper if wobble exceeds 0.007 inch ( 0.18 mm ) per 1.0 inch ( 25.4 mm ) of radius . A wasted crankshaft keyway may, however, still rotate without runout. In researching the engine diagrams, it looks like there is a circular seal behind the pulley. The crank pulley is also a harmonic damper. I don't have a scanner or a programmer. Crankshaft pulley wobble, 94 Jetta TD « Reply #8 on: August 17, 2007, 12:12:01 pm » The outer edge of the ribbed belt pulley (arrow) wobbles, as does the smaller pulley … Terms of Service - As we all know, “Prevention is better than cure.” Ignoring the crankshaft pulley will lead to some severe damage to the engine, crankshaft, or belts. I bought it about 25 years ago and there was evidence of front-end damage. Found inside – Page C-396Be sure that the polishing is not overdone , or the damper will wobble on the crankshaft . ( 14 10 6 2 . 3 7 ( 13 5 8 ( 12 ) 6 cylinder 2. ... TIMING CASE Crankshaft Pulley Replacement NOTE : To prevent vibration damper damage ... That said, the engine moves around a lot and will cause an optical illusion that the pulley is moving around. Any of the engines can develop crank wobble. I wonder if I'm experiencing an optical illusion and the pulley is just shaking with the engine. Found inside – Page 78Place the gear on its axle and check for wobble. There should be none and the gear should turn smoothly. The oil-pump drive gear for the 8BA is carried on an axle that's pressed into the rear ... The sleeve on the crankshaft pulley on. The crank keyway damage seems to be to common among the little Suzuki engines both 1.3L & 1.6L. Sep 2, 2011. I installed another ABF engine and gearbox in my mk2 a couple of weeks ago as a temporary measure to improve my 'good' engine. ? The other cure is a crankshaft pulley with a harmonic dampener/balancer. Seems I recall my buddy saying that a PO of his 9N didn't get the notch in the pulley aligned on the crankshaft key, before tightening, and it also had a bad wobble. Be sure to check all front end accessory drive components to assure their pulleys are tight, and inspect your belt for damage or wear. DI BABYYYY. Yeah, that pulley should never wobble at all. Probably a simple fix of take it off, replace the seal, put it back on and snug it down. If you watch the crank pulley, you can tell it wobbles back and forth a bit. Most guys replaced the crank with the later model long nose crank. It started after I installed a new alternator. I can get a 7% discount from the Jagshop in London. I purchased a genuine Porsche crank pulley (# 91110201704 V-BELT PULLEY) and a new flange'd hex bolt (# 99909300502 HEX BOLT). * Superior cast iron pulley replaces the sheet metal pulley. tighten, still wobbles, no noise, lasts for a day then noise back. Danville, Indiana. If the crank pulley is not in alignment with the rest of the pulleys, or it wobbles while running, the balancer is coming apart or working it's way off the crank. Need suggestions asap. 94 -- 3.1 td. Are there spine on the crankshaft where the pulley fits. Hey guys, my next project in getting the old beast tidied up needs to be the leaky crank pulley. Put on a new pulley and see if it clears. Found inside – Page 47SHORT - NOSE CRANKSHAFT Miatas are very robust little cars and generally don't suffer from unusual mechanical ... Symptoms include a wobbly pulley on the front of the engine ( careful here , there are other reasons that pulley can ... You will need a puller to get it off. Quote Link to comment However, while I was under there, I noticed I have a little bit of a front main seal leak and it looks like a wobble in the crankshaft pulley. As you take a bolt off the old one, put it in the same hole on the new one. It is supposed to clear, It could be old damage from being on an engine suffering a broken crankshaft or something really major like the flywheel coming loose or something. Wobble box pulley for Case IH platform models: 810, 820. The inner part of the pulley is bolted to the crank. What causes a crank pulley to wobble? Found inside – Page 148This plate, driven by the compressor shaft in an eccentric manner so that it wobbles fore and aft, operates the pistons. ... It has an even- firing crankshaft, throttle-body fuel injection, plus J-shaped intake ports and combustion ... But looking at the crankshaft pulley head on (standing in front of the left headlight), I can see the pulley slightly moving from left to right while the car is idling. Do i need to only replace the pulley or is this part of the harmonic balancer. Found inside – Page 1468Variable displacement is accomplished by changing the angle on the swash plate or wobble plate, which lengthens or ... When the clutch is disengaged (not connected), the pulley attached via a belt to the crankshaft can spin freely. 2) after crankshaft assembly I noticed the woodruff key has been loosen. The rubber core will under all circumstances be more flexible than a solid cast iron or aluminum pulley. Found inside – Page 39In extreme cases , the nose of the crankshaft can fall off . Sometimes the pulley can be seen wobbling when the engine is running , but this is not always true . Mazda declares the problem to be due to improper assembly , and this is ... It's just a reassembly of the crank pulley assembly using new parts on the old crankshaft. Should i replace the damper as well as the pulley? Jam the screw driver into the torque converter bolt inspecting holey things. (the black coating is almost completely off on the outside of my pulley, and the frame is missing a bit of paint.) When changing belts make sure all the belt ribs are seated in the pulley ribs. If it appears to spin in place without wobble then the damper is probably fine. ZZP?) My wife's 4.3 Blazer has a bent crank, and you can see it easy. 9 Posts . To remove a crank pully, you need a 21 mm socet, a breaker bar (Or ratchet with a good lenghth pipe for leverage) and a large screwdriver. It leaks 3-4 good drops after every drive, makes a mess down there flinging oil off the pulley, and then oozes a little more oil over the next day or two. A crankshaft pulley powers components on the crankshaft. Crankshafts are responsible for driving the car wheels. Crankshaft pulleys transmit mechanical power and torque, or the force of motion, through the pulley system to additional car elements, such as the power steering pump and alternator. CRANK PULL BUSTED AND WOBBLE. THe crank snout can be bent. my car is a 1999 mustang gt. Found inside – Page 3-279Aline capscrew holes and install pulley vibration damper assembly to crankshaft . ... gear case cover and rest the arm on the outer machined surface to check eccentricity and on inner machined surface of outer member to check wobble . Good idea is what I do to make sure the right bolt goes in the right hole. Yes, that bolt is normal thread, counterclockwise loosens it. Re: Crankshaft Pulley Post by COROLLA KID » Mon Dec 19, 2011 7:18 pm happened to me already it was the key and the pulley got worn had to replace them, wasn't easy to find though " a pulley with a key that is" Just last week I was watching a video on working on one of the F150 motors, and the cam gear behind the balancer pulley, 2003 F150, 5.4 engine shuts off when put into gear, The following errors occurred with your submission, Ford F150 Forum - Community of Ford Truck Fans, General Ford F150 truck discussions and questions, Aftermarket Products, Reviews & Installation, Suggestions, Comments & Questions about the Forum, Send a private message to Jasson Christenson.
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