Brakes, Wheel Assemblies, and Tires tips

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Filed Under (Tips and Review) by admin on 09-02-2012

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BRAKING SYSTEMS The braking systems used on motorcycles and ATVs, like virtually any type of braking system, reduce the machine’skineticenergyby transforming it into heat energy known as friction heat . Therefore, a brake is an energy-conversion device that converts the energy of motion (kinetic energy) into heat energy. Motorcycle braking is accomplished by the friction (resistance to movement) produced when a brake lining is forced against a rotating drum or disc. Friction between the linings and drum or disc serve to slow and eventually stop wheel rotation. The brakes used on motorcycles fall into two categories: Mechanical drum, sometimes called expanding shoe Hydraulic disc Motorcycle brakes commonly use either hydraulic (fluid pressure) or mechanical (cable or linkage) mechanisms to apply the brakes. Brakes, Wheel Assemblies, and Tires 1 Mechanical Drum Brakes First, let’slookatthedrum brake, sometimes called the mechanical, expanding double-shoe brake ( Figure 1 ). Generally used for rear wheels, this brake is also used on some front wheels. With this kind of brake, a backing plate that’sconnectedtothe forks holds the two brake shoes. The wheel and brake drum rotate around the brake shoes. When the rider applies the brake, a cam pushes the two semicircular shoes outward. The circle formed by the two shoes expands. When the shoes expand, they press against the rotating drum, thereby limiting its free rotation

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JMJ-1500 Motorcycle/ ATV Jack OWNER'S MANUAL

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Filed Under (Tips and Review) by admin on 23-11-2010

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1. Secure hydraulic ram (20) to the lift base (4) with two screws (21 & 21A). 2. Insert foot pedal assembly (19) into hole over pump piston and secure it with screw (19A) and flat washer (19B). 3. Raise lifting frame (17) to the proper height and align holes in the hydraulic ram (20) with the holes in the middle of the lifting frame. Secure ram to lifting frame with clevis pin (18) and R-pin (22) provided. 4. Place the spring (18A) in position between the clevis pin (18) and screw (18B). Operation 1. Before each use, visually inspect jack for abnormal conditions such as cracked welds, leaks, and damaged, loose or missing parts. 2. To raise the jack, center it directly below object to be lifted. Pump the foot pedal (19) slowly, making sure saddle takes up weight firmly and centrally. Check positioning under slight load to confirm load is centered on jack and load will not shift or slip. 3. Continue to raise jack slowly by pumping foot pedal to reach desired height. 4. Once desired height has been reached, raise safety arms (8) or built-in jack stands, to engage in raised tabs on lift base (4). SLOWLY press pump release foot pedal (23) to allow load to lower and rest on safety arms. 5. Secure load to jack with hold down straps (not included). Fasten hold down straps to steel loops on front and rear of frame. 6. To transport jack under load, lower jack with foot pedal (23) SLOWLY to the lowest position and always use the tow handle (1). Use EXTREME CAUTION when transporting jack under load! 7. To lower jack, raise load slightly with foot pedal (19) and disengage safety arms (8) from lift base (4). Press pump release foot pedal (23) until jack has been completely lowered. Unfasten hold down straps and remove jack from vehicle. Maintenance Adding/Changing Hydraulic Oil: Maintain oil at full level. For best performance and long life, replace hydraulic fluid once a year. 1. With saddle (10) lowered completely, remove oil plug located in hydraulic ram (20). 2. Drain fluid into appropriate container. Always dispose of oil in accordance with local regulations. 3. Use only good quality hydraulic jack oil. Fill until oil is level with inner cylinder as seen from the opening of the filler hole. Reinstall oil plug. Lubricate the jack as indicated on a regular basis with 30W oil. 1. Saddle and linkage on foot pedals and all moving and pivoting parts. 2. Front and rear lifting arms. Always store jack in the fully lowered position. Inspect jack annually for defective parts, missing safety labels or decals. If jack is found to be damaged or defective in any way, or operates abnormally, it shall be removed from service until repaired

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