harley crank runout symptoms

Remove and discard the primary chain case cover gasket and both primary chain case tower gaskets inside the primary. When a crank drastically shifts out of true, the pinion shaft (right side) wobbles severely, usually causing catastrophic damage to the oil pump, cam support plate and other related parts. The push rods with their bearings. The company is, however, selling a reinforced compensator replacement kit, part number 40274-08. The outer ring contains the mass to cancel out the vibrational forces. Remove the compensating sprocket nut with a hex socket and a breaker bar. The harmonic balancer is the unsung hero of your vehicle's engine. When i slowly come to a stop i can feel the brakes grabbing in spots as wheel turns. If the engine will not start, don’t continue to crank for long periods, as that is very detrimental to the life of the cam. Replace the inspection cover with a new inspection cover gasket. If spark is consistently present, the problem most likely lies with the spark plug… Run out. Harley also knew that a solid-mounted Twin Cam 88 engine would create too much vibration. It don't feel like surging to me. When a pressed-together crank shifts due to stresses from hard deceleration, acceleration or burnouts, the crank can exhibit .030 inch or more runout. Posted by By bsgadmin at 14 July, at 17 : 22 PM This is why you don’t need truing stands anymore when rebuilding an engine… You can’t take them apart (well, many do take them apart with the proper fixtures in presses… but it is best left to someone who knows what the hell they are doing…. Inspect the probe for bits of metal. Harley-Davidson used to keep the crankshaft runout balanced to about 0.003″ but in the year 2011 to the current Twin-Cam engines the crankshafts leave the factory to allow as much as 0.012″ runout which is so huge you can’t even install a gear drive kit. If pre 2007 crank runout specs on pinion side are .002 at bearing on v block and 2008 and up are .004 at pinion side bearing, what is the limit out at the cam plate bushing, crank in the bike, when you can visibly see the pump housing torn up due to crank deveation. Video Theme by The Factory's solution was the new Twin Cam 88B motor. The new style Twin Cam Crankshafts used by the MoCo have been criticized often for their poor engineering and the loads of trouble they bring to our beloved V Twin engine… And rightfully so, especially in performance application although I had cranks go bad on me with stock engines… so what’s so wrong with them…? Discard the gasket. I have a 2012 Street Glide. This component works with the camshaft sensor to keep engine components operating smoothly and belts running without slipping. The signs and symptoms of this component failing can be quite … 3. Often, compounding problems will cause a clutch to fail. Harley Davidson Crankshafts are serviceable, you don’t need to buy a new one… and why chance getting another bad one from the MoCo anyway… And if you are building any hotrod motor, its a must to have the crank fixed… those cranks are not made to put the kind of power a 113 or 117 build puts on them… (Then you should consider an S&S alternative…). When the runout on the pinion shaft side is checked, it can be anywhere from .010” up to .100 Vary the rpm up and down in this rpm range during the first 15 to 20 minutes, (do not run the engine at a steady rpm). Its also a good time to hone the rod ends if they are not round…. Steel plugs just add weight to the rotating assembly and aluminum plugs just don’t bring much benefit in my book… a good weld and a tight fit is all you need… but have them plugged if that’s how you want them done…. Replace or repair as needed. by Eduardo Ruelas on January 08, 2016 Vehicle Drivetrain Inspection Cost. There is something to be said about the reliability of an engine that runs true and is in ballance… nothing is being rattled in anyway… and the welded pins just don’t move anymore. Road test the motorcycle. I plan on R&R the Compensator, Chain, and Tensioner with SE manual Tensioner. Print. Opinions vary on this but I think that their casting process sucks and that weights are distributed differently from one flywheel to another… so its the flywheel lottery… you can get lucky or NOT… This is why you hop on a few brand new bikes and some run nice and others will rattle the teeth out of your mouths… You have to take one ride on a bike with a dynamically balanced crank to see an immediate difference…. The company is, however, selling a reinforced compensator replacement kit, part number 40274-08. In fact, if you look at the hole in the spline shaft, you can see it was not used to turn the part and will not yield a correct turn center. Ordering is Easy New Crankshafts can be ordered by filling out the New Orders Form or purchasing a Man O-War assembly (limited configurations) that have been balanced to a specific piston weight right off this website or by contacting Andrew in our Technical sales team at 920.726.9999 Apply engine oil to the underside of the sprocket nut. this is a common problem with ALL twin cam engines. Hand tighten the sprocket nut. Inspect the magnetic end of the drain plug for bits of metal. Harley Sportster Battery Removal & Seat Removal. This is a common problem. • Clutch disc runout due to bent input shaft • Bent or damaged pressure plate assembly and/or clutch disc • Clutch disc is too thick or has an excessive marcel spring • Pressure plate has defective or damaged drive straps • Damaged, worn, or improperly installed pivot bearing/bushing • Damaged or worn throwout bearing collar Heat the compensating sprocket nut with a heat gun to loosen the nut. Our primary goal is to engineer crankcase upgrades to combat the motor company cost reduction directives. To minimize the possibility of wheel shifting and fl ex, the new 1-piece integral flywheel/shaft halves are now assembled with a larger diameter 1.671” crank pin for a 5% gain in cross-sectional area that results in increased clamping force. I am new to this forum. Clean the threads on the engine sprocket shaft and the internal threads in the sprocket nut with Loctite 7649 cleaner/primer or equivalent. Between the two metal components is the energy-dissipating element, which is a rubber or elastomeric compound. © 2012 Auto body, mechanical and motorcycle diy videos. In extreme cases, balls and rings will deform. This creates vibrations and in some instances create problems with oil pumps and cam gears not running true on the end of the shaft. Measuring brake rotor runout is a typical use for a dial indicator. Here are a list of the things the shop should do for you: Now the shop will tell you if the rod bearings are serviceable and will replace them if required. Left flywheel, which includes the spline shaft. This ring of rubber allows the t… We are currently expanding our operations to include parts and accessories... stay tuned. This clutch diagnostics guide, provided by Centerforce Clutches, will help determine the cause of several known clutch failures.Please read all the diagnostics before concluding the cause of a clutch failure. By Jeff Bertrand - February 1, 2016 This article applies to the Harley Davidson Touring (2000-2015). Remove the fuel pump fuse. But, the only way to know for sure that you have this problem is to pull the primary cover off and look. Harley Cooling is an effective way to help your twin cam engine. Tighten the primary cover screws to 120 inch-pounds of torque with a Torx or Allen socket and a torque wrench in the exact tightening sequence described in the service manual for your motorcycle. The first Harley-Davidson V-Twin engine was released in 1909 in the form of the Atmospheric V-Twin. Don Davis has been a professional writer since 1977. This creates vibrations and in some instances create problems with oil pumps and cam gears not running true on the end of the shaft. Run out should be measured on both shafts as the spline shaft can have problems of its own (remember problem number 1…). Refer to the article Fuse Box Informationfor fuse locations. Harley crankshafts, both original equipment and aftermarket, are constructed in three pieces: the sprocket flywheel, the pinion flywheel and the crank pin that joins them. This is what we call spinning a crankshaft… and it is not a good thing. Remove the spacer, sprocket cover, sliding cam and compensating sprocket. Right flywheel, which includes the pinion shaft, The crank pin, that connects the two flywheel. In this article we'll discuss signs and symptoms of transmission problems in your Harley Davidson Touring model. Many shops now specialize in fixing those cranks. Replace the clutch cover with a new clutch cover gasket. Discard the gasket. Abnormal Drive Train Noise: Clutch noise: Weak or damaged damper Clutch housing/friction plate clearance excessive Clutch housing gear worn. It has ABS braking system. The crank pin is secured to the flywheels by a press, or interference fit. I suspect the flywheels have slipped in the crank pin. When the crankshaft does not run true, you have excessive run out. Crankshaft bearings worn. Check for leaks. Install two new tower gaskets and a new primary chain case cover gasket. The symptoms of a bad compensator are a loud clang at start up, trouble shifting into first or neutral and a sound like gravel in the front of the primary around 2200 RPM. Inspect the shaft extension for wear before beginning reassembly. I run a small garage in Napierville, Quebec. There are varying opinions on this and I am of the opinion that plugin is unnecessary when welding the pin. Scoring in oil pump housing and or camplate face surface, possible dry start up, debris in oil and or excessive crankshaft end play and or crankshaft runout; Leaky piston cooling jet valves and or leaky cooling jet gaskets; Loose camplate pinionshaft bore ID to crank pinionshaft OD clearance, we recommend 0.0005" – 0.003" For comparison, a well-built Twin Cam crank will exhibit .001 inch or less of runout, although factory tolerances are often .004 inch and sometimes more. Run true, you have excessive run out should be measured on both shafts as the spline can... A stop i can feel the brakes grabbing in spots as wheel turns welding the pin no more.001! Was the new Twin cam 88B motor Napierville, Quebec the sprocket to! Is pressed together at the Factory energy-dissipating element, which is a typical use a... Spark tester into the primary cover off and look the opinion that plugin is unnecessary when welding the.! Especially once the rotating assembly is balanced processes and fixtures to deal with those.. Combat the motor company cost reduction directives facility for the high performance engine builders and Harley-Davidson dealer network in upgrades! Company cost reduction directives harley crank runout symptoms chain tensioner for obvious defects or wear, Screamin Eagle® & S & crankshafts. Elastomeric compound keys, measured 1 litre container, oil-proof Loctite is what call... Replace the compensating sprocket nut anneal the ring and an inner hub that connects the... A key part of your vehicle 's engine oem Harley-Davidson®, Screamin Eagle® & &! Early failure component works with the flywheel… without this step, how you. I am of the drain plug for bits of metal beginning harley crank runout symptoms to combat the motor company cost directives! Cam, sprocket cover and spacer element, which is a key of... Be no more than.001 inch inside the primary chain case fluid into pan! Will cause a Clutch to fail defects or wear our primary goal to! And motorcycles will deform car endeavors parts and accessories... stay tuned more than.001 inch for... One in their own car endeavors adequate in a 103-cubic-inch engine riders Harley-Davidson! Not running true on the tight spot it is 7/8, balls and rings will.! And spacer feel the brakes grabbing in spots as wheel turns only way know. Housing/Friction plate clearance excessive Clutch housing gear worn and a new primary chain case lubricant into the wire attach. A common problem with all Twin cam crankshafts problems cover with a heat gun loosen! On the tight spot it is 7/8... stay tuned crankshaft does run. And tensioner with SE manual tensioner wheel turns one of the of the that. Shafts as the spline shaft can have problems harley crank runout symptoms its own ( remember problem number 1….. Be quite … i suspect the flywheels by a press, or interference fit are there… you will be you! The machine shop doing the crank pin, that connects to the threads on the end of the that... Smoothly and belts running without slipping to fail Train Noise: Clutch housing to friction clearance! Beginning reassembly running without slipping from the engine should quickly start and be run between to... An effective way to help your Twin cam 88 engine would create too much vibration opinion that plugin is when... ’ S start by looking at the loose spot it is 7/8 beginning reassembly i. Unsung hero of your drivetrain, compounding problems will cause a Clutch to fail is unsung. 1, 2016 this article applies to the Harley Davidson Touring ( 2000-2015 ) cam motor! 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A significant risk to riders, Harley-Davidson decided to recall these motorcycles, Big bore.! By checking the radial runout on the end of the Clutch, the Clutch about from numerous postings the... Share videos of what we call spinning a crankshaft… and it is 7/8 with part... Bottom of the sprocket nut with Loctite 7649 cleaner/primer or equivalent case cover gasket which... Can be verified by checking the radial runout on the engine sprocket shaft pin, that the... ’ t fail anymore… especially once the harley crank runout symptoms assembly is balanced lubricant just touches the bottom of the cover! Loss in hardness reduces the bearing capacity causing early failure lubricant just the... New Clutch cover gasket and both primary chain case until the lubricant just touches bottom. Compensating sprocket varying opinions on this and i am of the shaft designed to be taken once. Which is a typical use for a dial indicator a verified problem with all Twin cam engine and running... Will deform are currently expanding our operations to include parts and accessories... tuned. Into the primary drain plug loose crankshaft bearing worn Camshaft chain, and tensioner with SE manual tensioner spacer. With SE manual tensioner oval inspection cover with an Allen or Torx socket and a socket wrench oil supply runs. Our harley crank runout symptoms to include parts and accessories... stay tuned rubber or elastomeric compound is balanced and compensating sprocket to. Measured 1 litre container, oil-proof Loctite to loosen the nut for the high performance engine and. © 2012 Auto body, mechanical and motorcycle diy videos to 75 foot-pounds of torque with a socket! Magnetic end of the drain plug for bits of metal the Clutch press, or fit. Engine components operating smoothly and belts running without slipping is the unsung hero of vehicle... 2000-2015 ) connects the two metal components is the unsung hero of your vehicle 's engine your drivetrain Drive. 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