Filed Under (Yamaha) by admin on 30-12-2011
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
Filed Under (Harley Davidson) by admin on 27-03-2012
Removing the Cam Chain Drive System. NOTES Changing camshafts and cam drives in the 2006-up Harley-Davidson® Twin Cam 88® engines is different than in pervious engines. Procedures require use • of some special tools. Installation should be done by an experienced mechanic with access to factory service manual and required tools. Tighten all fasteners to the correct specifications and in order described. Always use an accurate torque wench. • Incorrect installation can cause engine damage not covered under warranty. CAUTION Failure to install components correctly can result in sudden engine seizure. Engine seizure may result in serous injury to motorcycle operator, passenger, or others. A- Disconnect the battery ground cable to eliminate potential sparks and inadvertently engagement of the starter while working on the motorcycle. B- Remove spark plugs and pushrod cover clips. Collapse the pushrod covers to expose the pushrods. C- Safely elevate and stabilize the rear of the motorcycle. Place the transmission in high gear. Turn the rear wheel to rotate the engine until both lifters and pushrods for either cylinder are at the lowest point on the camshaft (TDC of compression stroke). Both intake and exhaust pushrods for that cylinder will be under pressure from the valve springs and will rotate with light finger pressure. NOTE: 510G camshafts may use stock style non-adjustable pushrods instead of adjustable pushrods. If installing non-adjustable pushrods, disassemble and assemble rocker boxes per H-D® instructions. All other S&S® gear driven cams require installing adjustable pushrods. As a time-saving measure, the stock pushrods can be removed with bolt cutters. Be sure to head caution and warnings of these instructions. D- Cut the pushrods for the cylinder that is at TDC with the bolt cutter and remove the pushrod covers from the engine. Rotate the engine to place the pushrods for the other cylinder at their lowest point. Cut and remove the remaining pushrods. WARNING CAUTION Cutting pushrods with a saw or cutoff wheel may result in debris entering the engine, causing engine damage not covered under warranty. WARNING Cutting pushrods without releasing spring pressure, by rotating the engine until tappets are at the lowest point of travel can result in bodily injury. E- Remove the pushrod covers and lifters form the crankcase. F- Remove engine cam cover and gasket. Secure lifers with a tool made from a large binder clip
Filed Under (Kawasaki) by admin on 13-12-2010
Kawasaki’s first production bagger model is ready to take the street by force. The new Vulcan® 1700 Vaquero™ motorcycle combines the authority of a massive 1700cc liquid-cooled V-Twin engine together with low-slung, streetwise styling of a frame-mounted front cowling and lower chin fairing, sleek side-opening hard bags, and a choice of stealthy Ebony or fiery Candy Fire Red monotone paint. Besides its unmistakable style, the Vaquero also includes a smooth-shifting 6-speed overdrive transmission, cruise control, a full-feature audio system, and a host of custom-designed accessories. Get ready to rumble. 1700cc Liquid-Cooled V-Twin Engine The Vulcan 1700 Vaquero’s 1700cc V- Twin bristles with low-rpm torque, ensuring immediate and potent acceleration. 6-Speed Transmission with Overdrive With its overdrive top gear, the Vaquero’s 6-speed transmission teams up with the V-Twin engine for a relaxed highway cruising experience. Frame Mounted Front Cowling Muscular front cowling features a cut-down windscreen for a minimalist look and uninterrupted airflow, and is frame-mounted for light handling. Side-Opening Hard Bags Holding an impressive 9.2 gallons of storage apiece, the side bags integrate neatly into the Vaquero™’s smooth, clean lines. Electronic Cruise Control Conveniently located on the right handlebar, the Vaquero’s standard electronic cruise control precisely maintains speeds between 30 and 85 mph. Full-Feature Audio System High-fidelity audio system features AM/FM and weather radio, and is can be accessorized with iPod players, XM Radio and CB radios. Multi-Function LCD Instrumentation Located on the Vaquero’s stylish “muscle car” inspired dashboard, the multi-function LCD instrumentation clearly organizes and presents all essential information.
Engine Four-stroke, liquid-cooled, SOHC, four valve per cylinder, 52° V-twin Displacement 1,700cc / 103.7ci Bore X Stroke 102 x 104mm Compression Ratio 9.5:1 Maximum Torque 108 lb-ft @ 2,750 rpm Cooling System Liquid, plus cooling fins Ignition TCBI with Digital Advance Induction Digital fuel injection, dual 42mm throttle bodies Transmission 6-speed with overdrive and positive neutral finder Frame Type Steel, double-cradle with box-section single-tube backbone Rake/Trail 30° / 7.0 in. Front Suspension / Wheel Travel 45mm hydraulic fork / 5.5 in. Rear Suspension / Wheel Travel Swingarm with twin air-assisted shocks, with 4-way rebound damping / 3.1 in. Front Tire Size 130/90×16 Rear Tire Size 170/70×16 Brakes, Front / Rear Dual 300mm discs, dual twin-piston calipers / Single 300mm disc, twin-piston caliper Overall Length 98.8 in. Overall Width 38.2 in. Overall Height 50.8 in. Seat Height 28.7 in. Curb Weight 835.7 lbs.** Wheelbase 65.6 in. Fuel Capacity 5.3 gal. Color Choices Ebony, Candy Fire Red Warranty 36 months Good Times™ Protection Plan 12, 24 or 36 months ** Curb weight includes all necessary materials and fluids to operate correctly, full tank of fuel (more than 90-percent capacity) and tool kit (if supplied
Filed Under (Harley Davidson) by admin on 07-02-2011
INSTALLATION PROCEDURE Note: All Evolution® “Big Twin” pistons are marked “Front” or “Rear” and come with rings, wrist pins, and locks. • Note: We highly recommend that a dealer or trained mechanic perform the installation of these pistons. Specialized equipment is required for honing and finishing the cylinders to ensure long life of the piston and cylinder assembly. 1. Remove original equipment cylinders from engine. Refer to a shop manual or other reference book for specific steps, if needed. (Note: Care should be taken not to bend the studs or damage the cylinder during removal of the cylinders.) 2. With a small screwdriver, move the wrist pin retainer around to gain access to the tail of the retainer as it lines up with the notch in the bottom of the wrist pin hole. 3. Use a small screwdriver, pick or awl to roll the wrist pin retainer out of its groove. 4. Push wrist pin out and remove piston. 5. Repeat procedure for the other piston. 6. At this point, take cylinders, new pistons, and piston-to-wall clearance specifications to your dealer or machine shop to perform necessary machining operations. • IMPORTANT NOTE (Evolution® and Twin Cam®): The cylinder bore must be machined/honed to provide .0025″ of piston-to-wall clearance. Measure the piston diameter at a point .500″ up from the lower skirt (See Figure 3). 7. Starting with the front cylinder, install new piston rings and one wrist pin retaining clip (Note: Second ring has a dot which must face up when the ring is installed) . 8. Place the piston over the conecting rod, making sure that the intake valve pocket is towards the intake side. (For Evolution ® , see Figure 1. For Twin Cam ® , see Figure 2) . Coat the wrist pin with engine oil and insert it into the piston. Install the second wrist pin retainer into the groove. 9. Lightly coat the piston skirt with engine oil. Place a piston ring compressor over the piston/ring assembly and compress. Place the cylinder over the piston and gently push down until all rings are in the cylinder. Remove the ring compressor, and push the cylinder the rest of the way down. (Note: Be careful not to get oil onto the base gasket.) 10. Place two nuts and washers on opposite corners of the #1 cylinder to hold it down while you repeat the procedure for cylinder #2. 11. Assemble the rest of the engine per factory specifications. Start the engine and let it run at 2000 rpm for about 10 minutes.
Filed Under (Kawasaki) by admin on 25-10-2010
The first Kawasaki KZ750 twin was built in 1975 and sold as a 1976 model as a KZ750B1. For the first four years of production (1976-79), the KZ750B1 through B4 shared identical Mikuni BS38 carburetor assemblies. These assemblies are probably the heaviest twin-carb assemblies ever built and have a couple unique features. The biggest oddity is that the Kawasaki version of the BS38 uses a system where both the pilot jet and main jet are screwed into the float bowl. A good bowl gasket is critical because gas is drawn from the jets into the internal passages that lead to the venturi via channels beneath the gasket inside the float chamber. The pilot jets used are standard BS series fare in that they are Mikuni BS30/96 type but the main jets are unique to Kawasaki BS38 carburetor assemblies. They look like very small air jets and are frequently stripped as they require the correct sized small screwdriver to remove