New Automatic Transmission for Motorcycles Human-Friendly Transmission

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Filed Under (Honda) by admin on 18-12-2011

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High-pressure fluid flow The engine rotates the pump swash plate, which has a gear mechanism. The rotating swash plate pushes the pump pistons to increase the pressure on the hydraulic fluid and feed it to the high-pressure annular chamber. The high- pressure fluid is then fed to the oil motor piston chamber where it pushes the pistons forward, which then push the motor swash plate. Power Fluid flow from pump to motor Fluid flow from motor to pump Low-pressure fluid flow The lower-pressure hydraulic fluid returns to the pump through the low-pressure annular chamber. In this way, the fluid circulates between the pump and the motor. Movement of distributor valves and pistons The distributor valves play an important role in fluid circulation. The valves are placed both in the oil pump and motor. When the pump pistons move to the compression side, the valves connect the piston chamber and the high- pressure chamber. When the pump pistons move to the expansion side, the valves allow a connection between the piston chamber and the low-pressure chamber. The valve in the oil motor moves opposite to its counterpart in the pump, ensuring the circulation of fluid within the system

HONDA CB 90O C CYLINDER HEAD PISTON REMOVAL and INSTALLATION

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

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108 CYLINDER/PISTON PISTON/PISTON RING INSPEC- TION I Inspect the piston ring-to-groove clearance. NOTE Mark the rings so that they can be returned to their original locations. Inspect the pistons for damage and cracks; ring grooves for wear. Insert each piston ring into the cylinder, and inspect the end gap

HARLEY DAVIDSON LOWER FORK BRACKET (TRIPLE TREE) COVER KIT INSTALLATION MANUAL

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Filed Under (Harley Davidson) by admin on 13-03-2011

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Installation 1. For models equipped with air baffle: See Figure 1. Remove and discard the two hex screws (2) and flat washers (3) holding the baffle (1) to the fork stem and bracket assembly(4). Retain the baffle for later reassembly. For models not equipped with air baffle: Remove and discard the two plugs from the rear of the fork stem and bracket assembly (4). 2. Remove and discard the hex socket head screw (6) holding the brake line manifold (5) to the underside of the fork stem and bracket assembly. 3. Place the lower fork bracket cover into position covering the brake line manifold. Attach the cover (and the baffle, if so equipped) to the fork stem and bracket assembly with the two 1/4″ self-tapping hex screws from the kit. Tighten securely. 4. Install the 5/16″ self-tapping hex socket screw through the cover and brake line manifold into the stem and bracket assembly. Torque to 10-15 ft-lbs (13.6-20.3 Nm). 5. Verify that the throttle and clutch cables are routed properly and do not interfere with steering the vehicle. After disturbing the brake system, BEFORE moving motorcycle, you must pump brake fluid until the pistons push the pads against the brake disc. If you don’t pump fluid pressure up again, the brake will not be available to stop the motorcycle which could result in death or serious injury. After disturbing the brake system, always test motorcycle brakes at low speed. If brakes are not operating properly, or braking efficiency is poor, testing at high speeds could result in death or serious injury

Harley-Davidson Big Twin Evolution and Twin Cam Edelbrock/ JE Sport INSTALLATION INSTRUCTIONSsman Pistons

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Filed Under (Harley Davidson) by admin on 07-02-2011

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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.

YAMAHA YW50X SERVICE MANUAL

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Filed Under (Yamaha) by admin on 25-11-2010

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1. Before removal and disassembly, remove all dirt, mud, dust and foreign material. 2. Use only the proper tools and cleaning equipment. Refer to the “SPECIAL TOOLS”. 3. When disassembling, always keep mated parts together. This includes gears, cylinders, pistons and other parts that have been “mated” through normal wear. Mated parts must always be reused or replaced as an assembly. 4. During disassembly, clean all of the parts and place them in trays in the order of disassembly. This will speed up assembly and allow for the correct installation of all parts. 5. Keep all parts away from any source of fire. EAS00021 REPLACEMENT PARTS Use only genuine Yamaha parts for all replacements. Use oil and grease recommended by Yamaha for all lubrication jobs. Other brands may be similar in function and appearance, but inferior in quality. EAS00022 GASKETS, OIL SEALS AND O-RINGS 1. When overhauling the engine, replace all gaskets, seals and O-rings. All gasket surfaces, oil seal lips and O-rings must be cleaned. 2. During reassembly, properly oil all mating parts and bearings and lubricate the oil seal lips with grease.
1-3 GEN INFO IMPORTANT INFORMATION EAS00023 LOCK WASHERS/PLATES AND COTTER PINS After removal, replace all lock washers/plates 1 and cotter pins. After the bolt or nut has been tightened to specification, bend the lock tabs along a flat of the bolt or nut. EAS00024 BEARINGS AND OIL SEALS Install bearings and oil seals so that the manufacturer’s marks or numbers are visible. When installing oil seals, lubricate the oil seal lips with a light coat of lithium-soap-based grease. Oil bearings liberally when installing, if appropriate. 1 Oil seal c C Do not spin the bearing with compressed air because this will damage the bearing surfaces. 1 Bearing

S&S Pistons Installation Instructions

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Filed Under (S&S) by admin on 31-10-2010

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For maximum piston and ring life, fit pistons using close fit dimensions. Close fit requires absolute adherence to new engine break-in as described on page 7. 2. For immediate drag strip use, fit pistons using loose fit dimensions. Break in rings and pistons with 50 easy miles if possible. Piston and ring life will be reduced with loose fit dimensions. 3. Measure all pistons at widest point across thrust face, perpendicular to wristpin hole. Several measurements should be taken to locate widest point. Typically, this will be at bottom of piston skirt for pre-1984 big twins, and approximately 1⁄ 2 ” below level of wristpin hole in pistons for Harley- Davidson®Evolution®and Twin Cam 88®engines. If pre-1984 piston is notched for placement in rear cylinder, use measurement directly above notch for skirt measurement. 4. S&S®recommends #220-#280 grit stone for final honing of stock bore and Sidewinder®, S&ST124 and S&S big bore cylinders. #320 grit stone is recommended for engines using S&S 92-4500, 92-4510, or 92-4520 pistons. 5. Follow procedure recommended in Harley- Davidson®service manual for boring and honing stock bore big twin and Twin Cam 88®cylinders. Follow instructions included with S&S Cylinder Torque Plate Kit when boring and honing S&S 35⁄ 8 ” or 4″, 41⁄ 8 “bore cylinders. Torque plates must be used to simulate compressive stress in an assembled engine. Cylinders will distort if torque plates are not used.

HARLEY-DAVIDSON V-ROD BIG BORE KIT INSTALLATION INSTRUCTIONS

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Filed Under (Harley Davidson) by admin on 31-10-2010

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The cylinder sleeves provided with the Wiseco V-Rod big bore kit have been finished honed to size and the piston to cylinder clearance has been set. Prior to installation, the sleeves must be washed in hot soapy water (not parts washer solvent) and dried. Coat the bore surface with motor oil and wipe it with a white towel. If the towel shows any remaining grit, repeat the hot soapy water washing process until the towel will only show clean motor oil. CAUTION: Test fit the cleaned sleeve (without O-Rings installed) into the engine block. Sleeve should drop into position. If sleeve will not easily drop into position, warm the engine block with a hair dryer until sleeve will drop into position. Remove sleeve, then continue installation procedures. From the bottom side of the sleeve, gently roll the 2-cylinder sleeve O-rings into the two grooves on each sleeve. Apply motor oil to the O-rings and gently install the sleeves into the block until bottomed. CAUTION: DO NOT ATTEMPT TO INSTALL SLEEVES WITHOUT LUBRICATING THE O-RINGS. FAILURE TO LUBRICATE O-RINGS COULD RESULT IN TORN OR DAMAGED O-RINGS THAT WOULD NOT BE EVIDENT UNTIL ENGINE WAS STARTED. INCORRECTLY INSTALLED O-RINGS CAN RESULT IN CATASTROPHIC ENGINE DAMAGE. NOTE: REFER TO THE OEM SERVICE MANUAL FOR ALL TORQUE SPECIFICATIONS PISTON RING PREPARATION Wiseco V-Rod pistons incorporate an advanced 2 ring system • The top ring is file-fit, and as such, requires that the end gap must be clearanced. The proper end gap clearance is .016-.018″ with the ring installed squarely in the bore. The top ring must be installed on the piston with the dot marking toward the top of the piston. • The oil ring is comprised of the expander and two rails. Install the expander first, and then the rails. Check to make sure the expander tips have not overlapped. It is not necessary to clearance the end gaps on the oil rails. The rails should be installed without modification. PISTON INSTALLATION The Wiseco V-Rod big bore kit is supplied with pistons that are front and rear cylinder specific. Install the front piston 4792M10795 in the front cylinder with the arrow facing the front of the engine. Install the rear piston 4793M10795 in the rear cylinder with the arrow facing the front of the engine. A piston ring compressor is required to install the pistons into the cylinders. Front of engine ➔ 4792M10795 ( Front piston) 4793M10795 ( Rear piston) FWD 4793M10795 FWD 4792M10795 For further information call the Wiseco Tech Line:

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S&S Connecting Rods Installation Instructions

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Filed Under (S&S) by admin on 29-10-2010

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1. Female rod crankpin end to mainshaft nuts – .030″ minimum clearance recommended. A. Install sprocket shaft and crankpin in driveside flywheel. Snug nuts only. Do not torque to final specs. B. Slide connecting rods and bearings over crankpin. C. Rotate rods on crankpin, and observe clearance between rod and sprocket shaft nut. D. If additional clearance is needed, remove material from sprocket shaft nut. Do not remove material from connecting rod. E. Repeat procedure for camside flywheel and pinion shaft. 2. Female rod crankpin end to inner flywheel rim – .060″ clearance recommended. A. While checking female rod to mainshaft clearance, observe clearance between crankpin end of female rod and rim of both flywheels. B. If additional clearance is required, remove material from flywheel at point of contact. Do not remove material from connecting rod. 3. Wristpin end of both female and male rods to flywheel edge -.060″ minimum clearance recommended. A. While checking female rod to mainshaft clearance, observe clearance between wristpin end of both rods and rim of both flywheels. B. If additional clearance is required, remove material from flywheel at point of contact. Do not remove material from connecting rod. 4. Wristpin end to crankcase and cylinder – .060″ is recommended in these areas. A. With the camside flywheel and rods mocked up, install the assembly in the right crankcase half with pistons (less rings) and cylinders in place. B. Rotate flywheel through one full revolution and check for rod to crankcase and cylinder spigot contact on both the front and rear of each cylinder. C. File or grind crankcase or cylinder spigot as needed to achieve .060″ clearance. Do not remove morematerial than needed. D. Repeat for left crankcase half. NOTE: Whenever clearancing is performed in any of these areas, do not remove any material from the connecting rods as clearancing on the rods may unnecessarily weaken them. Make adjustments to the point of contact on the mainshaft nut, flywheel rim, crankcase, cylinder spigot, etc. Connecting rods weakened by clearancing may fail causing serious engine damage.

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BMW PISTONS AND RINGS INSTALLATION INSTRUCTIONS

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Filed Under (BMW) by admin on 26-10-2010

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1. Always clean the grooves before installing rings. Carbon build-up in the groove will lead to ring “bottoming” and can result in engine seizure. 2. Check the fit of rings in the groove. A maximum of .003″ side clearance is allowable. 3. Check the cylinders for taper and out-of-roundness. Any taper of out-of-roundness will have an adverse effect on the performance of an engine. Excessive piston clearance will detract from maximum performance as well. 4. Allow ample ring gap. There is far more danger of ring butting than of an appreciable compression loss through the ring gap. Gaps, if staggered, do not cause any measurable reduction of compression. Compression rings should be fitted with a minimum of .004″ end gap per inch of cylinder deglazing. 5. Always deglaze cylinder walls before installing new rings. A 400 grit stone is recommended for deglazing. 6. All parts should be spotlessly clean before installation. Dirt in any form is the worst enemy of a hi- performance engine. You may wash all parts in hot, soapy water. Ring Gap Installation 1. Do not gap oil control rings. Start with the oil control expander. Expander Ring ends butt together. Do not overlap them. 2. Install oil control rings. Set gap 90 from where expander ring butts together. Gap top oil control ring 180 from lower oil control ring gap. 3. Install 2nd and top ring also with marks up. Stagger gaps