how does a crankshaft and camshaft work together

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Harley Davidson Big Twin EVO Engines Edelbrock Performer-Plus Camshaft , Performer RPM Camshaft , & Performer RPM Camshaft INSTALLATION INSTRUCTIONS

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Filed Under (Harley Davidson) by admin on 03-03-2012

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Disconnect the battery. Secure the motorcycle on a suitable stand with the rear wheel off the ground. Remove components necessary for easy access to rocker covers, pushrod covers, and gear case cover, i.e., exhaust system, gas tank, air cleaner, foot rest, etc. Remove spark plugs. 2. Remove top and middle sections of rocker boxes, then rotate engine so both valves are closed on the cylinder head being worked on (put transmission in high gear and move rear wheel to slowly rotate engine). Remove the two 5/16″ bolts nearest the rocker arm shafts (keep all shafts, rocker arms, and pushrods in order so they can be installed in their original position). Remove the pushrod covers and pushrods. NOTE: The use of adjustable time-saver pushrods will simplify installation. Follow the manufacturer’s recommendations for installation of those parts. 3. It is not necessary to remove the tappet guides if you use a cam installation tool such as Crane #9-0020 to hold the tappets in place during cam installation. If you remove the tappet guides, you must use a tappet block alignment tool such as Crane #9- 0021 to re-install the tappet guides. Tappets can be held up in place during removal of guides by using U-shaped piece of safety wire or paper clip hooked to the tappets. 4. Remove ignition covers on gearcase cover by drilling out rivets to gain access to sensor plate. Remove the inner cover, sensor plate and rotor. NOTE: For re-installation, use new rivets H-D #8699 or drill and tap for 10-32 screws. 5. Remove the gearcase cover screws and remove cover while holding end of cam inward. Now remove the camshaft, spacing washer and thrust plate

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Honda XR600/ XR650L Camshaft Installation and removal Instructions

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Filed Under (Honda) by admin on 05-12-2011

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Remove the tappet covers. Remove the crankshaft cap and timing hole cap on the left engine case cover. Remove the spark plug. Rotate the engine in a counter clockwise direction. Position the engine at true top dead center (TDC) using the mark on the flywheel. True top dead center occurs when both the intake and exhaust valve are closed when the piston is at TDC. This is technically the end of the compression stroke and the beginning of the power stroke. The “artificial” TDC is during the overlap when both the intake and exhaust valves would be open. Since the rocker arms are located in the valve cover on an XR600, true TDC occurs when the cam lobes are pointed downward when the piston is at TDC. Remove the cylinder head cover. Warning, do not drop the locating dowels into the cam chain cavity. There are two dowels, one on either side of the cover. Remove and discard the gasket. Note the positioning of the cam lobes, this will help during installation of your new Hot Cams camshaft. Note also the location of the sealed bearing on the end of the camshaft and the direction in which it is facing. Loosen the bolts that hold the camshaft sprocket. Remove the lower camshaft sprocket bolt first, it will be necessary to rotate the engine. Rotate the engine back to TDC. Release the spring tension on the cam chain tensioner by lifting the end of the spring out of its hole in the tensioner block. A spring tool is a good method. Be careful not to scar the cylinder head’s gasket surface for the cylinder head cover. Remove the allen bolt that holds the end of the tensioner block shaft
just to the inside of the tensioner block. Note the location of the tensioner block shaft cap ridge. Using a pair of pliers pull the shaft out by grasping the ridge and using a clockwise rotation of the shaft while pulling outward. Pull the tensioner block upwards, out of the cylinder head. Remove the top camshaft sprocket bolt. Pull the sprocket off the camshaft but maintain upward tension, do not allow the chain to sag, it is possible for the chain to “slip” on the bottom sprocket of the crankshaft and change the cam timing. Remove the camshaft. Remove the cam bearings. Set the stock camshaft with the auto-decompression aside. It is not possible to use the auto-
decompression on the Hot Cams so do not attempt to re-install. Use a manual decompression. Install the bearings onto the new Hot Cam

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Crankshaft Durability of Rover K-Series Engine: Comparison of ENGDYN Analysis with Dynamic Measurements

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Filed Under (BMW) by admin on 17-11-2010

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The Rover K-Series engine has now been in production for over 10 years, initially of 1.4 L capacity. Since then 1.1L, 1.6L, 1.8L and 1.8L VVC (Variable Valve Control) have been introduced with an accumulative build of two million engines since 1989. The 1.8L engine is also built under official licence for Lotus and Caterham, and also in the MGF motorsport series. The K-Series is an attractive buy due to its reduced cost and low weight, which is a necessity for sport cars. This report aims to validate Ricardo ENGDYN software with respect to Rover K-Series 1.8 Litre VVC crankshaft durability. The software will be used to output the behaviour of the crankshaft under as realistic conditions as possible. The oil film thickness and bearing load characteristics of the crankshaft through the running range of the engine will be compared to results obtained from in-house software. The torsional and bending vibration output from ENGDYN will then be compared with results obtained from dynamic measurements. Finally, the crank stress and durability results from ENGDYN will be compared to strain gauge measurements at comparative points on the crankshaft. ENGDYN is a computer program used for analysing the dynamics of the engine, and in particular the crankshaft and its interaction with the cylinder block. In this analysis the software will be used to predict the time-domain response of the 3-dimensional vibration of the crankshaft coupled to the block by way of a non-linear oil film. When this loading and motion has been calculated the software can perform a fast Fourier transform to break down the time-domain response into its corresponding frequencies. This allows the results to be post-processed in the frequency domain. 2 Method of Analysis 2.1 Engine Specifications Configuration: in-line 4 Fuel: Gasoline Cylinder bore: 80 mm Piston stroke: 89.3 mm Swept volume: 1.8L Crankpin Peak Power: 107 KW @ 7000 rpm Peak Torque: 174 N/m @ 4500 rpm Engine running range: 750-7200 rpm 2.2 Component Modelling 2.2.1 Crankshaft To perform the analysis within ENGDYN two crankshaft models were created. These included a complete stiffness representation of the crank (excluding the crank nose hub and the flywheel), and a detailed model of the crank from main bearing 4 to main bearing 5, with mesh density increased around the fillets. ENGDYN can however perform crank analysis of any portion of the crank as long as the model incorporates at least two main journal bearings. Features such as bolt holes and oil drilling were omitted on both models, which were meshed using solid tetrahedral elements

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YAMAHA CRANKSHAFT LOWER END REMOVAL AND INSTALLATION TOOLS

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Filed Under (Yamaha) by admin on 08-01-2012

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90 LOWER END REMOVAL & INSTALLATION TOOLS SHOP EQUIPMENT & TOOLS 35-8399 35-8513 35-8516 35-8508 35-8504 35-8507 YAMAHA CRANKSHAFT PROTECTORS Sold each. 35-8504 YM-4063-A, XV750/920 Virago, XT550, YFP350, YFM660R Raptor 35-8399 YM-1382, XT250/XT350, RZ350, YFP350, YFZ350 35-8507 YM-33282, XV500 Virago, XZ550 Vision, XVZ12/13 Venture & Venture Royale, VMX12 V-Max 35-8508 YM-38145, XV750/XV1000 Virago YAMAHA CRANKSHAFT INSTALLATION SET Sold as a set. Consists of the following: Qt1-Installing Pot, Qt1-Pot Spacer, Qt1-Bolt. 35-8509 YU-90050 Crankshaft Installation Set OPTIONAL POT SPACERS 35-8513 YU-90070-A, XV750/920 Virago, XT550, TT600 35-8515 YU-91044, YFM350, SRX600, XT550/600 35-8516 YU-1202, SR500, TT/XT500 CRANKCASE PRESSURE TESTER An accurate method for checking possible air leaks on two-stroke engines. Complete with air pressure gauge, pump-up bulb and all fittings and adapters for single and multi-cylinder two-cycle engines. 35-5962 Crankcase Pressure Tester CRANKSHAFT INSTALLING JIG TOOL Supports and centers crankshaft webs while assembling two-stroke engine cases and rebuilding crankshafts. Prevents rod misalignment. Adjustable tang ends. 35-9804 Crankshaft Installing Jig Tool CRANKCASE SEPARATOR TOOL This tool will work on most two and four stroke engines that have a vertically split crankcase. Moveable fingers allow a multitude of bolt patterns to be used so it will work on a variety of models. Includes 6mm and 8mm mounting bolts, center pulling bolt and a three leg frame that is appropriate for many applications. 35-9642 Crankcase Separator Tool 35-9637 Replacement 6mm and 8mm mounting bolts. Each

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Kawasaki KVF650/ 700, KSV 700 Camshaft Installation Instructions

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Filed Under (Kawasaki) by admin on 29-04-2012

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Liberally apply assembly lube to every surface of the camshaft. Install the camshaft into the cylinder head (the lobes should be pointed down) and align the decompressor shaft dowels with the weight arms. Install one of the camshaft sprocket holder bolts and tighten to less than finger tight, you should be able to move the camshaft very slightly back and forth, roll the crank over until the other bolt hole is exposed and insert the sprocket bolt and tighten to less than finger tight. Install the cam chain tensioner assembly, do not install the spring, spring dowel, washer, and bolt. Using the spring from the cam chain tensioner very slowly push the tensioner shaft in until the cam chain slack has just been taken out, this is witnessed by the very slight lifting of the opposite end of the cam out of the cylinder head cam journal, do not over tighten the cam chain at this point, if you do, remove the tensioner assembly and retract the plunger again and start over. (If it stays too tight it will stretch the cam chain prematurely and cause cam sprocket damage when the engine is assembled) Roll the camshaft toward the back of the machine (clockwise) loading the sprocket bolts against the back of the sprocket bolt holes, while holding the camshaft in that direction, tighten the sprocket mounting bolt to 14 ft/lb of torque. Rotate the engine in the opposite direction that you rotated it earlier and align the TDC mark, tighten the other sprocket-mounting bolt to 14 ft/lb of torque. Verify the cam timing and crankshaft TDC marks are in alignment

Yamaha YZ 250F Camshafts REMOVAL AND INSTALLATION MANUAL

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Filed Under (Yamaha) by admin on 30-12-2011

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Remove the 4 bolts that hold the exhaust cam cap in place, lift the cam cap off. It may be necessary to pry very lightly on the cap to lift it off its dowel pins. Do not use the cam lobes as the pry point. Be careful not to drop the dowels and also be careful to not lose the half moon shaped retainer for the bearing under the cam cap. Remove the 6 bolts that hold the intake camshaft cap and lift the cam cap off the camshaft, again, be careful to not drop the retainer or dowels. Lift the intake camshaft out of its pocket in the cylinder head casting. Remove the cam chain from the sprocket, set the stock camshaft aside. Lift the exhaust cam out of its pocket in the cylinder head casting and remove the chain from the sprocket. Do not drop the cam chain, dangle it over the side of the engine while keeping slight upward pressure on the chain to maintain its position on the drive sprocket on the crankshaft. Fit the half moon shaped retainers in the grooves of the Hot Cams camshaft bearings to ensure good fit, set retainers aside for the time. Using assembly lube, lube the shim buckets, bearing surfaces for the camshafts in the cylinder head, and pack some in the camshaft bearings. Set the exhaust cam into the cylinder head casting while at the same time fitting the cam chain over the sprocket. Make sure that you keep all the cam chain slack to the back of the engine. The cam chain pulls the camshaft sprockets in a counter clockwise direction and the slack of the chain must be kept on the cam chain tensioner side of the engine. The exhaust cam has two timing marks on it. When correctly installed one mark will be at the 9 o’clock position and the other mark will be at the 12 o’clock position. When correctly timed the mark at 9 o’clock will be aligned with the valve cover gasket surface. Repeat the above process for the intake camshaft. Again, make sure you keep the chain slack to the cam chain tensioner side of the engine. Check to be sure the crankshaft is still at TDC. The intake cam has two timing marks also. One at 12 o’clock and the other at 3 o’clock. When both cams are installed correctly, the valve cover gasket surface will form a straight line through the exhaust timing mark at 9 o’clock and the intake timing mark at 3 o’clock

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2009 Daytona 675 Motorcycle Race Kit Manual

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Filed Under (Triumph) by admin on 29-10-2010

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1. Remove the existing cylinder head gasket in line with the procedures detailed in the Daytona 675 service manual. 2. Position a piece of solder (with a diameter approximately 1.3 mm) on the four squish surfaces of each piston. Position the solder in line with the corresponding squish surfaces on the cylinder head and hold in place with a small amount of grease. 3. Refit the cylinder head with the head gasket. 4. Slowly turn the engine over, by hand, to compress the solder to the same height as the squish clearance. 5. Remove the cylinder head and head gasket. 6. Measure the compressed thickness of the solder. The squish clearance must be a minimum of 0.65 mm. If the thickness of the solder is less than 0.65 mm repeat steps 2 to 6 with a thicker head gasket until the squish clearance is at an acceptable level. NOTE •In some cases, it may be necessary to use a standard cylinder head gasket to achieve the correct squish clearance. 7. Fit the chosen cylinder head gasket following the procedures detailed in the Daytona 675 service manual. Warning Running the engine at less than the minimum recommended squish height can lead to the pistons contacting the cylinder head, causing major engine damage. This could cause loss of motorcycle control and an accident. Triumph Designs Ltd 2009. Camshaft, Valve Spring & Camshaft Sprocket Kits Parts Supplied Camshaft, Inlet – A9618055 Camshaft, Exhaust – A9618056 Valve Spring Kit – A9618086 Camshaft Sprocket Kit – A9618095 Warning The Race Kit camshaft, valve Spring and camshaft sprockets must be fitted as a complete set. If they are not fitted as a complete set a failure may result which could cause loss of motorcycle control and an accident. Caution The use of The Race Kit camshaft, valve Spring and camshaft sprockets detailed below will require changes to the fuelling and ignition settings. To alter these settings, a Triumph Programmable Race ECU combined with Triumph TRACS Race Calibration Software will be required. Failure to correct the fuelling and ignition settings will result in poor engine performance and could result in engine damage.

SUZUKI SV 1000 RADIATOR (COOLING SYSTEM) SERVICE MANUAL

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Filed Under (Suzuki) by admin on 26-02-2011

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FI SYSTEM MALFUNCTION CODE AND DEFECTIVE CONDITION MALFUNCTION CODE DETECTED ITEM DETECTED FAILURE CONDITION CHECK FOR COO NO FAULT C11 Camshaft position sen- sor The signal does not reach ECM for more than 3 sec . after receiving the starter signal . The camshaft position sensor wiring and mechanical parts (Camshaft position sensor, intake cam pin, wiring/coupler con- nection) C12 Crankshaft position sensor The signal does not reach ECM for more than 2 sec . after receiving the starter signal . The crankshaft position sensor wiring and mechanical parts (Crankshaft position sensor, wiring/coupler connection) C13 Intake air pressure sensor The sensor should produce following voltage . (0.50 V < sensor voltage < 4 .85 V) Without the above range, C13 is indicated. Intake air pressure sensor, wiring/coupler connection C14 Throttle position sen- sor The sensor should produce following voltage . (0.20 V < sensor voltage < 4 .80 V) Without the above range, C14 is indicated. Throttle position sensor, wiring/coupler connection C15 Engine coolant temperature sensor The sensor voltage should be the following. (0.15 V <_ sensor voltage < 4 .5 V) Without the above range, C15 is indicated. Engine coolant temperature sensor, wiring/coupler connection C21 Intake air temperature sensor The sensor voltage should be the following. (0.15 V < sensor voltage < 4 .5 V) Without the above range, C21 is indicated. Intake air temperature sensor, wiring/coupler connection C22 Atmospheric pressure sensor The sensor voltage should be the following. (0.50 V < sensor voltage < 4 .5 V) Without the above range, C22 is indicated. Atm. pressure sensor, wiring/coupler connection C23 Tip over sensor The sensor voltage should be the following for more than 2 sec . after ignition switch turns ON . (0 .20 V < sensor voltage < 4 .80 V) Without the above value, C23 is indicated. Tip over sensor, wiring/coupler connection C24 or C25 Ignition signalCrankshaft position sensor signal is produced and ECM determines the ignition signal but signal from ignition coil is interrupted continuous by 4 times or more. In this case, the code C24 or C25 is indicated. Ignition coil, wiring/coupler connection, power supply from the battery SERVICING INFORMATION 8 .3 C28 Secondary throttle valve actuator No operating voltage is supplied from the ECM, C28 is indicated. STVA can not operate. STVA lead wire/coupler, STVA C29 Secondary throttle valve position sensor The sensor should produce following voltage . (0.10 V < sensor voltage < 4 .90 V) Without the above range, C29 is indicated . Secondary throttle position sensor, wiring/coupler connection C31 Gear position signalGear position signal voltage should be higher than the following for more than 2 seconds. (Gear position switch voltage >_ 0 .6 V) Without the above value, C31 is indicated. Gear position sensor, wiring/coupler connection, gearshift cam, etc. C32 or C33 Fuel injector Crankshaft position sensor signal is produced and ECM determines the injection signal but fuel injection signal is interrupted continuous by 4 times or more. In this case, the code C32 or C33 is indicated. Injector, wiring/coupler connection, power supply to the injector C41 Fuel pump relay No voltage is applied to fuel pump although fuel pump relay is turned ON, or voltage is applied to fuel pump although fuel pump relay is turned OFF . Fuel pump relay, connecting lead, power source to fuel pump relay C42 Ignition switchIgnition switch signal is not input in the ECM . Ignition switch, lead wire/coupler C44 Heated oxygen sensor (HO2S) [For E-02, 19] During 02 feedback control, 02 sensor voltage is higher or lower than the specification . No signal is detected during engine operation or no electrical power is supplied from the battery . HO2S lead wire/coupler connection Battery voltage supply to the HO2S C49 PAIR control solenoid valve (PAIR valve) When no operating voltage is supplied from the ECM, C49 is indicated. PAIR valve can not operate. PAIR valve lead wire/coupler

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Kawasaki KFX KLX 400 Camshafts Installation Instructions

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Filed Under (Kawasaki) by admin on 25-10-2010

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Remove the plug bolt from the back of the cam chain tensioner assembly. It is under pressure from the spring. Remove the spring and pin. Remove the bolts and tensioner assembly from the cylinder. Release the lock on the tensioner assembly and push the tensioner rod into the assembly so that it is fully retracted. Remove the eight 5mm Allen headed bolts that hold the cam caps in place. Remove the cam caps; be aware of the locating dowels in the caps to keep them from falling into the engine. It may be necessary to pry very lightly on the caps to lift them off their dowel pins. Do not use the cam lobe as the pry point. Lift the intake camshaft out of its pocket in the cylinder head casting. Remove the cam chain from the sprocket, set the stock camshaft aside. Lift the exhaust cam out of its pocket in the cylinder head casting and remove the chain from the sprocket. Do not drop the cam chain; dangle it over the side of the engine while keeping slight upward pressure on the chain to maintain its position on the drive sprocket on the crankshaft. Using assembly lube, lube the shim buckets and bearing surfaces for the camshafts in the cylinder head. Set the exhaust camshaft into the cylinder head casting while at the same time fitting the cam chain over the sprocket. Make sure that you keep all the cam chain slack to the back of the engine. Repeat the above process for the intake camshaft. Again, make sure you keep the chain slack to the cam chain tensioner side of the engine. Check to be sure the crankshaft is still at TDC. Check the location of the cam lobes. The camshafts are marked, and preset to 108-degree centers. If the lobes are not where they should be, adjust the positioning of the camshaft by rotating the sprocket one tooth on the chain. Do this until it is in the correct position as before you removed the camshafts. Check the positioning of the crankshaft for the TDC mark

Honda CRF/ TRX 450R Camshaft Installation

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Filed Under (Honda) by admin on 19-11-2011

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Break-in of this camshaft is important and you should adhere to all of the following instructions. It is also very important to use plenty of engine assembly lubricant, recommended is Coastal Engine Assembly Lube or Clevite 77, both are available from most automotive supply companies. We recommend you change the engine oil before the initial start-up of the engine after the assembly. Then change the oil again after the break-in of the cams to remove the excess
phosphate from the coated cams. These steps will help ensure that the camshaft breaks-in properly and that you have a long lasting product. Using full synthetic engine oil during break-in is not recommended but, is OK to use after the one-hour break-in period is over. Following a regular maintenance schedule is the best way to ensure durability and performance over the long run. Cleanliness is always a good place to start. Make sure the motorcycle is cleaned thoroughly before you start. It would be advisable to use an engine degreaser on the frame and the engine. Remove the fuel tank and thoroughly clean the inside of the frame rails, around the carburetor, and behind the radiators. Be sure to remove the ignition coil assembly and using high-pressure air, clean the spark plug hole out before the plug is removed. This will ensure a clean engine during the assembly process and less of a chance of thread damage and/or dirt contamination in the engine during reassembly

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