Harley has not issued a recall. 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…. As can be seen on the diagram, if one of the flywheels actually moves after being pressed, the two wheels and their shafts are no longer running on the same plane (both shaft are no longer true to each other). Road test the motorcycle. Video Theme by This creates vibrations and in some instances create problems with oil pumps and cam gears not running true on the end of the shaft. Often, compounding problems will cause a clutch to fail. The wobbling pinion shaft then trashes the oil pump and cam drive mechanism while contaminating the engine's oil supply. These are specialized machine shops that have developed processes and fixtures to deal with those crankshafts. This site is where I share videos of what we do hoping that it will help some one in their own car endeavors. Don Davis has been a professional writer since 1977. Posted by By bsgadmin at 14 July, at 17 : 22 PM Temperatures in excess of 400°F can anneal the ring and ball materials. Tighten the sprocket nut to 75 foot-pounds of torque with a hex socket and a torque wrench. Crankshaft thrust faces are difficult to grind; because they are done; using the side of the grinding wheel. Abnormal Drive Train Noise: Clutch noise: Weak or damaged damper Clutch housing/friction plate clearance excessive Clutch housing gear worn. 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" Metal chip jammed in clutch housing gear teeth. This all came about from numerous postings on the Rennlist about THRUST BEARING FAILURE and how to prevent it. Method: 1) start the bike and do a short warm-up ride 2) stop the bike whilst still vertical 3) put bike on lifter 4) remove hex grub screw under crankcase on RHS of bike. When the crankshaft does not run true, you have excessive run out. 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. Page 2 of 2 - 2010 Crank Runout spec now .004 ???! 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. Clutch housing gear to primary gear backlash excessive. First let’s start by looking at the construction of the assembly. Remove the round clutch cover and gasket. They insure the spline shaft runs true with the flywheel… without this step, how can you true up the crank? 'Ihe temperature rise can also degrade or destroy lubricant Remove the fuel pump fuse. 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. The outer ring contains the mass to cancel out the vibrational forces. This component works with the camshaft sensor to keep engine components operating smoothly and belts running without slipping. Check for leaks. 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). the status of the flywheels can be verified by checking the radial runout on the gear shaft with the engine still in the frame. Crank the engine and watch for spark. by Eduardo Ruelas on January 08, 2016 Vehicle Drivetrain Inspection Cost. It is under warranty. Check for the cause and correct. Remove the cover and gasket. All rights reserved. If no spark is present at the end of the spark plug wire, the air/fuel mixture cannot ignite. Print. This is a common problem. Refer to the article Fuse Box Informationfor fuse locations. In total, Harley-Davidson recalled about 250,000 models. Left flywheel, which includes the spline shaft. To test for spark: 1. Crankshaft runout excessive. It don't feel like surging to me. Remove the five clutch cover screws with an Allen or Torx socket (depending on the year and model of your bike) and a socket wrench. Symptoms are discoloration of the rings, balls, and cages from BluelBlack gold to blue. First, its an assembly. In extreme cases, balls and rings will deform. 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. Pour primary chain case lubricant into the primary chain case until the lubricant just touches the bottom of the clutch. When the runout on the pinion shaft side is checked, it can be anywhere from .010” up to .100 Engine mounts loose. The signs and symptoms of this component failing can be quite … By Jeff Bertrand - February 1, 2016 This article applies to the Harley Davidson Touring (2000-2015). Harley also knew that a solid-mounted Twin Cam 88 engine would create too much vibration. 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 He has had numerous writing jobs, including writing news and features for the "Metrowest Daily News" and "Los Angeles Herald-Examiner." 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. Run out should be measured on both shafts as the spline shaft can have problems of its own (remember problem number 1…). When the crankshaft does not run true, you have excessive run out. The Factory's solution was the new Twin Cam 88B motor. This page shows the steps I took to measure the amount of play in my crankshaft and the health/condition of my thrust bearing. Drain the primary chain case fluid into a pan. 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. Run out. Clean the threads on the engine sprocket shaft and the internal threads in the sprocket nut with Loctite 7649 cleaner/primer or equivalent. These are assembled before the flywheels are pressed. Apply thread locker to the threads on the engine sprocket shaft. Now, let’s look at a diagram of the our problematic twin cam crankshaft: I don’t know how they spline that shaft, but when they do, the alter the shaft’s integrity and its aliment with the left flywheel. Harley Cooling is an effective way to help your twin cam engine. Remove the primary chain case cover. 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. The push rods with their bearings. 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. When i slowly come to a stop i can feel the brakes grabbing in spots as wheel turns. I measured the Crank run out it was good at .002, and the tranny shft is .003, so the runout theory does not apply. The chain spec is 5/8-7/8 cold. 4. When having the crank trued, make sure you include the balancing while you are there… you will be glad you did. Symptoms of a Bad or Failing Front Output Shaft Oil Seal If your car has all- or four-wheel drive and there is noise or fluid leaking from the transfer case, consider replacing the front output shaft seal. Many shops now specialize in fixing those cranks. The harmonic balancer is the unsung hero of your vehicle's engine. Insert a spark tester into the wire and attach the tester to ground. Clean and inspect all components for wear. Premium Wordpress Themes, Harley Davidson Twin Cam Crankshafts Problems. 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. Remove the primary chain case drain plug on the bottom of the chain case under the clutch cover with an Allen socket and a socket wrench. We do mostly interesting things, old cars and motorcycles. Cran kshaft runout excessive Engine mounts loose Crankshaft bearing worn Camshaft chain tensioner trouble Camshaft chain, sprocket, guide worn. 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. How to Remove the Inner Primary Cover ... How to Install a Starter on a Kawasaki ... How to Replace a Throw Out Bearing in a ... How to Change the Oil in an Arctic Cat ... Frazer Harrison/Getty Images Entertainment/Getty Images, Copyright 2021 Leaf Group Ltd. / Leaf Group Media, Service Bulletin Compensating Sprocket Torque Procedure, "2005 Harley-Davidson Service Manual"; Harley-Davidson Motor Company; 2005, Replacement primary chain case cover gasket, Loctite 7649 Cleaner/Primer or equivalent. The oil cooler features a controlled fan that provides a continuous flow of cooling air, thus helping your engines cool down and reduce the wearing of the plastic shoes. Measuring brake rotor runout is a typical use for a dial indicator. The transmission is a key part of your drivetrain. Harley Sportster Battery Removal & Seat Removal. I believe that anytime you go into the case the crank should be done and then you end up with a crank that will last and that you don’t have to worry about… Good insurance. 5. 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