Gold Mining Method

Gold is a chemical element in the periodic table that has the symbol Au (Latin: 'aurum') and atomic number 79. A transition metal (trivalent and univalent) soft, shiny, yellow, heavy, "malleable", and "ductile". Gold does not react with other chemicals but is attacked by chlorine, fluorine and aqua regia. This metal is widely available in gold nuggets or dust on the rocks and in alluvial deposits and one of the coinage metals. Its ISO code is XAU. Gold melted into liquid form at a temperature of about 1000 degrees Celsius.

In industry, the gold obtained by isolating it from the rock gold ore (extraction). Gold ore categorized into four (4) categories:

• Thin ore where its content of 0.5 ppm
• Ore average (typical) easily excavated, a typical value of gold ore in an open tunnel excavation which contains 1 -5 ppm
• Underground ore / hardrock containing 3 ppm
• Ore visible eye (visible) with a minimum content of 30 ppm

According to Greenwood et al (1989), gold ore rocks that deserves to be exploited as a gold mining industry, gold content of approximately 25 g / ton (25 ppm).

Gold Mining Method

Gold mining method is strongly influenced by the characteristics of gold deposits. Based on the process of formation, deposition of gold categorized into two types, namely:

Deposition Primary / Primary deposits

In general, gold was discovered in the form of metal (native) contained in the cracks of rocks and quartz in the form of minerals formed by magmatism or the concentration at the surface. Some precipitate formed due to contact metasomatisme process and hydrothermal activity, which form the main body of ore with silica. Primary gold deposits to have a distribution in the form of veins / vein in igneous rocks, rich in iron and is associated with quartz veins.

Deposition plaser / Secondary deposits

Gold is also found in the form of alluvial gold formed by the weathering of the rocks containing gold (gold-bearing rocks, Lucas, 1985). Oxidation process and the influence of water circulation that occurs in the primary gold deposits at or near the surface of the lead to the disintegration of gold ore primary constituent.

The process causes also separated and dispersed gold. Regardless, disseminated gold from ore bonding primer can be deposited back in the cavities or pores of rocks, cracks in the ore body and its surroundings, forming a collection of gold grains with a rough surface texture. As a result of this process, the grains of gold in the secondary gold deposits tend to be larger than the grains of the primary deposits (Boyle, 1979).

Where the concentration of mechanically through a process of erosion, transport and sedimentation of the results of the disintegration of gold deposits pimer produce gold deposits put / alluvial (placer deposit).

Primary gold deposits mineable open pit mine (open pit) and underground mines (underground minning). While secondary gold deposits are generally mined by open pit.

Primary deposits

The primary deposits are deposits that formed simultaneously with the formation of rocks. One common type of primary deposits made on a small scale mining is a vein-type ore (veins), which is generally done by underground mining techniques, especially methods gophering / coyoting (in Indonesia called rat hole).

Mining to underground mining system (underground), by making a hole horizontal openings of tunnels (tunnel) and vertical openings in the form of pitting (shaft) as the access into the mine. Mining is done by using simple tools (like a chisel, hammer, shovel, crowbar) and carried out selectively to choose gold ore containing both low-grade and high-yield.

Against rocks are found, do rock crushing or grinding process, then performed cyanidation or amalgamation, while for secondary mining type generally can be directly performed cyanidation or amalgamation because it is in the form of fine granules.

• Some characteristics of vein-type ore (veins) that affect mining techniques include:
• Mineral or metal components are not evenly spread over the body veins.
• Ore mineral crystals can be rough.
• Most veins have a narrow width so susceptible to fouling (dilution).
• Most veins associated with faults, fracture filling, and shear zones (strain), so in this condition allows the dilution effect of the rock.
• Differences assay (levels) between veins and rock side is generally sharp, associated with contact with the rock side, the impregnation of the rock, as well as the pattern of veins that branching.
• Fluctuations in the thickness of the veins are difficult to predict, and has a limited range, and has a very erratic levels (random / irregular) and difficult to predict.
• Most veins are relatively hard and brittle.

By paying attention to these characteristics, mining methods commonly applied are underground mines (underground) with Gophering method, which is a non-systematic way of mining, no need to hold preparations for mining (development works) and the direction of the excavation just follow the direction of flight of the ore deposits. Therefore, the size of the hole (stope) is also not necessarily, depending on the size of the ore deposits in the place and generally without buffering good.

How to mining generally without adequate buffer and excavation generally performed without mechanical devices.

Mining is done in a simple, no development works, and immediately dug ore deposits comply with the direction and shape of natural. When the ore deposits are not homogeneous, sometimes had to be abandoned irregular pillar of poor parts.

The process is done in mining Underground scale artisanal mining methods:

Development into the mine pit.

Inlet is made very simple with a diameter generally can only access one person only.

Construction of access to the ore body.

Access to the ore body is made according to the location of the target orebody. There are two ways to get to the ore body based on the location of deposits, namely:
a. Using drift (inlet horizontal, shoot), if the location of the ore body is relatively parallel to the main entrance.
b. Using shaft (vertical inlet), if the location of the ore body relative under the main entrance.
As well as the inlet to the mine, access to the ore body is made simple, with just enough work location to use just one person with a diameter of about 1 - 1.5 m. The entrance hole is made without buffering or just with a simple buffer for the expected area prone to collapse.

Excavation of gold ore

Gold ore excavation carried out by following the direction of continuity of ore. Tools used for purposes such as rock excavation excavator manual.

Transporting gold ore from the mine to the outside of the mine to be done manually. Transport path using the main entrance. Especially for access using shafts, transport assisted by a pulley system.

Underground mining methods are well done with the following provisions:
The entrance to the gold ore veins must be made more than one piece, and can be made flat / horizontal, tilted / inclined or perpendicular / vertical as needed.
The size of the driveway can be tailored to the needs, recommended diameter> 100 cm.

Location driveway is at a stable area (slope <30 °) and it should not make its way into the steep slopes. Hole openings should be kept in a stable condition / not collapse, if necessary can be installed a buffering system that should be able to guarantee the stability of the hole openings (for inlet with a slope> 60 ° is recommended to always put buffer).

Wood suggested buffer used first class wood. Diameter wood used buffer recommended no less than 7 cm. The distance between the buffer should not be more than 0.75 x diameter of the aperture (depending on grade wood used buffer and rock strength are supported).

Air circulation should be ensured so as to guarantee a minimum requirement of 2 m3 / min, if necessary, can use the blower / compressor to supply the needs of oxygen into the hole

Around the inlet made trenches to prevent water from entering, and trenching directed toward settling ponds with precipitation done gradually, if necessary, can use a submersible water pump to get rid of stagnant water from the hole.

Secondary deposits

Secondary gold deposits, better known as the alluvial gold deposits of gold were deposited along with the material sediment carried by the stream or ocean waves is a common characteristic of easily found and mined by the people, because of the ease of extraction.

Alluvial gold deposits are characterized by sediment deposition conditions are separated with a gold metal content in the form of granules, can be mined and processed by physical gold separation, using simple equipment.

Alluvial gold deposits with distribution on the surface or near surface is easily recognizable, with characteristic is off, and gold has been in the form of metal (native), sufficiently processed by physical separation.

In general, alluvial gold mining is done based on the principles of:
Gold grain is separated so that ore excavation proceeds directly experience processing.
Based on the location of occurrences, in general mining activities carried out in aqueous work environment like rivers and swamps, so that by itself would utilize existing water in the surrounding areas.

Characteristics of alluvial gold deposits will determine the systems and equipment in mining operations. Based on the characteristics of the gold deposition, open pit mining methods commonly applied using equipment such as:

Panning (panning)

Mining by way of panning done by artisanal mining in the river or near the river. This method is mostly done by individual miners using panning tray to separate the gold from concentrates or grains of mineral impurities.

Mine spray (hydraulicking)

At spray mine used syringes (monitor) and pump for memberaikan rocks and mud subsequently poured or pumped spray results to installation concentration (sluicebox / sluice). This method is mostly done on a small scale mining including artisanal mining where the available water resources are sufficient, generally located in or near the river.

Some of the conditions that make alluvial gold deposits can be mined using spray mining methods include:

•     Conditions / material type allows decomposed by water spray
•     The availability of adequate water
•     Availability of space for placement or separation of ore washing results

Dredging

Dredging is done when the mining technique Placer sediment lies below the surface of the water, for example in offshore, river, lake or valley provided a lot of water. At this mine is mostly done on a small scale mining including artisanal mining using a dredger (dredge) or with a dragline in combination with the above processing pontoon (floating washing plants).
According to Turner, 1975, dredges can be classified as follows:

Mechanics
- Bucket line.
- Bucket - wheel suction.
- Dripper.

Hydraulic
- Suction.
- Cutter head.

The tools used in mining dredgers by his digging tool is divided into three, namely:

•     Multi bucket dredge, dredges that his digging tool in the form of a series of bowl (bucket)
•     Cutter suction dredge, his trencher cutter form that resembles a crown.
•     Bucket wheel dredge, excavator equipped with a rotating bucket (bucket wheel)

Although this method has largely been replaced by modern methods, dredging is carried out by small-scale miners using suction dredgers. It is a small machine that floats on the water and are usually operated by several people. A series of suction dredging consists of a suction pump machine, concentrator box, and compressor are supported by pontoons. On the suction hose is controlled by miners working under water (divers). The divers use a compressor to meet the need of oxygen.

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Tips To Be Heavy Equipment Operator

Professional duties as a heavy equipment operator is not confined to operating a bulldozer. Also not gender-specific calls for both men and women working in this field can work. If you can operate the machine, willing to work as a team, have a satisfactory communication skills and is open to suggestions for improvements, you will definitely be successful as a Heavy Equipment Operator, it is its main capital. Then if the profession heavy equipment operator.

Tips To Be Heavy Equipment Operator

Profession is a heavy equipment operator jobs that require special skills to run a variety of tools such as bulldozers, Hydraulic Excavators, Wheel Loaders, Dump Truck, Forklift up barges and others. Mastery in particular operate heavy equipment can not instantly and not the same as another to operate heavy equipment, as well as professionals who master the operation of heavy equipment units in the construction field can not just run the examples in the mining work. 

Seeing so wide cultivated fields heavy equipment operator job, in this competence is limited scope of work each in the fields of construction, transportation, mining and logging with consideration of population who use a lot of heavy equipment and is part of the work carried out by the operator. Both are appointed by the company, as a heavy equipment operator loose, heavy equipment operator specialized maintenance and repair in construction work. They are also responsible for travel and shipping work.

Maintain and repair of heavy equipment.

Heavy equipment operators are also authorized to maintain the health of the appliance unit. Maintenance and repair of heavy equipment maintenance preparation of which is controlled by a single agency company standards development skills adapted to the version of their respective companies. This happens due to the lack of a national competency standards on the operation of heavy equipment both for the field of construction, transportation, mining and logging sector and the national competency standards of care and repair Equipment Heavy Equipment.

On the basis of the perceived need for a reference to the operation and Maintenance & Repair Heavy Equipment standardized so there is a good guarantee for operators, mechanics and companies for the operation and maintenance of heavy equipment units, so that operating errors are not expected to be spared and the working life of the unit optimal use of the machine can fit the manufacturer's specifications.

Educational qualifications and eligibility criteria for heavy equipment.

Heavy equipment operating in world are generally carried out by the operator owned company whose expertise when it bought a unit of heavy equipment from a company authorized in a particular brand, so the ability of the operator in the operation of the machine becomes limited and very varied between one particular brand with other brands. . There are schools or courses are very few in World that offers courses in heavy equipment training. Students are taught the basics of analytical and diagnostic techniques along with in-depth knowledge of electronics. Being a field work, training was delivered to the work done in a practical environment.

The sub-categories of job positions, such as mechanics require certification validation, which need to be renewed every 5 years. In addition to the education, eligibility criteria first and foremost is to have a driver's license Heavy Equipment. Experience in driving trucks and small construction machinery is considered as an additional advantage. Ability to work with different people, to be open to the idea of ​​additional training and assessment responsibilities and distance are some other criteria to employ a heavy equipment operator.

A number of freelance jobs available for new graduates or trainees who have completed formal education programs in the operation of heavy equipment. Most organizations pay a very nominal salary at a beginner level.

Natural task as a heavy equipment operator.

Task heavy equipment operator to operate machines such as highway trucks off the highway, graders, excavators, forklifts, dump trucks, articulated trucks, loaders, scrapers, pavers, backhoes and shovels car. As a junior operator, one can start with small equipment operation and then switch to heavier. With experience and training, can eventually be promoted to senior positions such as supervisor, working foreman, safety officer or coach. If you are an independent-minded person, you can also be as a freelancer or set up their own business, having gained several years of experience in the field of heavy equipment operators.

Because this is the work required in almost all heavy manufacturing facilities, one can easily move to the cities, do not have worry about becoming a heavy equipment operator, usually benefits provided very qualified for a living and family expenses.

Heavy equipment operator salary.

Overseas salary standards for heavy equipment operators is 40 hours. On average, they can make around $ 20,000 to $ 49,000 per year (including benefits). A legal holidays and holiday pay are also provided along with insurance. Medical benefits, dental, and retirement packages will also be available. Cumulatively, people can get almost 20% to 30% of basic hourly rate of pay. A job with a high risk if the careless and less vigilant. This profession requires stamina, endurance and high concentrations.

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Advantages and Disadvantages Mono Shock Suspension

Each motorcycle is issued by the manufacturer has its advantages and disadvantages of each, so you as the customer who stayed very clever to choose a motorcycle vehicle that fits your everyday activities.

One that you should be aware that the suspension system. The suspension system serves as a working system to reduce vibration when the vehicle is traveling on the road so comfortable when in the ride. Mono shock and double shock has its advantages and disadvantages of each, this time I discussed the advantages and disadvantages of using mono shock suspension.

Advantages and Disadvantages Mono Shock Suspension

Advantages

1. When maneuvering is more convenient, because the focus is on a single point load, so when passing through ramps, bend and swing hole softer springs. That's what makes the system more comfortable than double monoshock shock.
2. More stylish. Because of this suspension system as much in use in motorcycle racing sport in the world, so that its image is cool.
3. Motorcycle performance using a mono shock suspension system is more stable than using a double shock. Because the focus is on a single point load in the middle of the swing arm, so that when the time passes embankment sharp, uneven roads and ramps, mono shock remains stable.

Disadvantages

1. Payload less, because the focus shockbreaker concentrated at one point attempted to make the duty not to exceed the standards set by the manufacturer of your motorcycle. If you ignore it, it's going shockbreaker be damaged.
2. More expensive. Due to the quality of mono shock shockbreake better, making it more expensive than the doubleshock.
3. Age systematic use of motorcycle suspension is relatively shorter mono shock.

These are some of the advantages and disadvantages of motorcycle using system mono shock suspension from Electronic And Mechanic, hopefully can help you in choosing the suitable motorcycle for your activity and for you who already have a motorcycle mono shock suspension system can get to know the characteristics of your motor.

More or less like it, the rest are sorry if there are deficiencies in this article.

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Forklift Maintenance

Forklift is an equipment which is ideal for moving heavy loads in industrial operations or other activities. As with other machine tools, mechanical parts of the forklift also tends to wear during continuous use. To be durable forklift needed maintenance done regularly and professionally, forklift with good care will contribute to the durability of the forklift.

5 Tips Forklift Maintenance

Forklift maintenance of good will support the performance and durability of the forklift, there are several ways you can do to care that his condition remained good forklift as described below.

1. Brush with oil actively moving parts. Forklift has actively moving parts such as pedals to the front fork arm. Try moving the joints is not in the dry state, because the friction that occurs during the use of the forklift will have a negative impact on the performance of the forklift if the joints in the dry state.

2. Check the fuel and other fluids regularly. In addition to fuel, no other liquids or oils that help is on the forklift machines. Make sure the fluid is checked regularly and do not run out during use. These fluids include transmission fluids, hydraulic, coolant, and oil.

3. Make sure Forklift at full charge. For the type of forklift that uses battery power, gas, and electricity for electric forklift must be ensured in the contents or in full charge before use.

4. Make sure Gauges Forklift function properly. Gauges Forklfit there paneled instrument serves to give an indication of when there are some parts that are damaged or not functioning. Therefore, it must be ensured this instrument is functioning properly so that damage to other parts may be known as true and good.

5. Ensure forklift tires in good condition. tire is one of the factors that affect the performance of a forklift, it must be ensured that there is air pressure in the tires should be balanced. In addition to the load carried in a stable state, it is so stable power issued forklift.

For a more detailed treatment of this forklift can be asked in a forklift distributor who professionally handle this.

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Simple Caring Electricity

Electricity in the car is very vital existence, all the components of the electrical system of the car is in dire need of good and work in accordance with safety standards or safety riding, especially when driving at night or in bad weather. Electrical system is the heart of the vehicle, if there is a disturbed course will greatly impede the rider or driver.

Not all who have a car can master the problem of electricity, there are only able to drive there anyway that knows the whole of the car electrical system.

Simple Caring Electricity

Here is how to and tips on caring for the car electrical.

1. Check the condition of the Accu or accumulators

Battery or batteries or accumulators can be called also is a very important part of the electrical system, sometimes exhausted battery or battery power shortages. Charge the battery if the battery is exhausted, so do not pay attention to battery acid battery water shortage. Recharge the battery water when the water level is below the lower level of the battery.

2. Examination Alternator

As modifier rev the engine into electrical current alternator peranya certainly very vital. Check the indicator on the dashboard panel to determine whether the alternator works well or not. When the battery indicator light picture light means the alternator is not working properly.

3. Replacement Fuses

Fuses serves as the electric circuit breaker in case of short circuit the electrical system. replace the fuse when it is black or replace fuse periodically during the service or tune-ups.

4. Be careful when adding accesoris

Accesoris as under fluorescent lights, audio or accesoris are not innate manufacturers to consider their effectiveness, if not equally effective user and better considered first installation.

5. Examination of wires and lights

Cables and lamp examination shall be conducted regularly and check with unbelievably detailed. Check all cables contained on engine components, lampshade and cabin lamp or roof lights. Then check the light bulb carefully, how to heat up the engine while doing the inspection to all parts of the lights one by one. If there is no light bulb or inclined black and check also the relay, when the main lights dim usually occurs due to damaged or abnormal riley.

Thus ways and tips on caring for the car to be delivered electricity, sorry if there is a shortage. May be useful, Greetings

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Knowledge Dynamic Compression Ratio

Dynamic Compression Ratio (DCR) is an important concept to create a high-performance machine. Specifies the compression ratio is calculated after the intake valve closes that will inform you about octane fuel will be used.

The compression ratio (CR) of the engine is the cylinder volume ratio compared with the volume of the combustion chamber. A cylinder with 10 units of volume and the volume of the combustion chamber 1 has a compression ratio of 10: 1. Static Compression Ratio (SCR) is the ratio of the most frequently cited. It is derived from the volume of the cylinder using a crank full stroke (BDC to TDC). More dynamic compression ratio using a piston position at the intake valve closing after BDC to determine the volume of the cylinder pressure.

Dynamic Compression Ratio

The difference between the two is huge. For example, with a cam that closes the intake valve at 70º after TDC, the piston has been increased by 23 mm of TDC at the point of closing the valve. This reduces the pressure cylinder. This is the only difference between the SCR and DCR count.

• Calculations used in calculating the CR is the same.
• DCR is always lower than the SCR.

Not to be confused also the dynamic compression ratio with pressure cylinder. Pressure cylinder is almost constantly changing. It occurs due to many factors including RPM, design intake manifold, cylinder head and efficiency, the design of the exhaust, valve timing, throttle position, and a number of other factors. DCR measured or calculated from the actual dimensions of the machine. Therefore, unless the variable cam timing is used, such as static compression ratio, dynamic compression ratio calculated fixed when the machine was built and never changed during operation of the machine.

Two important points to remember:

1. DCR is always lower than the SCR
2. The DCR is not changed at any time during the operation of the machine

Hope useful, thanks for read article from Electronic And Mechanic.

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Steps To Heavy Equipment Maintenance

Heavy equipment is used every operation will certainly decrease the ability gradually, so that your machine can always provide optimal results it is necessary routine maintenance. The following are the steps to care for your heavy equipment. Hope this article from Electronic And Mechanic is useful for your heavy equipment bussines now and in the future. 

1. Preventive Maintenance

The treatment is carried out with the aim to prevent / remove the possibility of disruption / damage to the machine. Preventive Maintenance is done without the need to wait for signs of damage or broken. For this way, preventive maintenance maintenance is divided into three models:

1. Periodic Maintenance

Periodic maintenance is the implementation of the service that should be done after the equipment to work for a certain number of hours of operation. This is the number of hours worked in accordance with the amount indicated by the registrar hours of operation (service meter) that exist on the device. To carry out periodic maintenance, it covers:

a. Periodic Inspection

Examination or inspection before the unit is operated daily and weekly checks, it is to know the lock state machine is safe to operate. In carrying out periodic inspection, especially in the implementation of daily treatment (daily maintenance), can use several tools, among others:

• Check sheet: A form (list) that is used to record the results of operations of each machine in one day operations.
• Daily check: A form (list) as well as the check sheet, the only difference is the size that is pocket size so as operator or service-man will easily record.

b. Periodic maintenance

Treatment machine / unit regularly is very important to ensure trouble-free operation of the damage and extend the life of the unit. Time and money spent to carry out periodic service (regular maintenance) will be compensated by extending the life of the unit and the reduced cost of operation of the unit.

All figures show the number of hours worked in the information listed on the check sheet is based on the numbers you see in the service meter. But in practice highly recommended further facilitate the implementation of care and funny.

In the field of heavy work or operating conditions which means, it is necessary to shorten the treatment time schedule specified in the user guide.

So the regular maintenance is an attempt to prevent the damage done continuously at predetermined intervals based on the implementation of the hour meter (HM).

The new machine must be operated with carefull, especially regarding the following matters:

• After the start, revive engine - about 5 minutes at low speed to heat before operation.
• Avoid running the engine at high engine speed.
• Avoid running or increase the engine speed suddenly, the brakes abruptly and veered off if not needed.
• In the operation of the first 250 hours of work, the oil and the filter element must be replaced entirely with oil and a new filter element and original.
• Remember always to perform maintenance and periodic inspections as indicated in the manual.
• Remember to use the fuel and lubricating oil recommended by the manufacturer.

2. Schedule Overhaul

The type of maintenance performed at intervals in accordance with the standard overhaul done and found against each of the existing components. Schedule overhaul implemented to rebuild the engine or components in order to return to the standard conditions in accordance with the Standard Factory.

The time interval that has been set is influenced by a wide range of conditions such as the operating field conditions, periodic service, operator skill and so on.

Overhaul carried on a scheduled basis without waiting for engine / component fails. Various overhaul:

• Engine overhaul
• Transmission overhaul
• Final drive overhaul
• General overhaul
• Etc.

3. Condition Base Maintenance

The type of treatment that aims to restore the unit to normal (standard), by way of doing service like: PPM, the PPU measurement results adapted to the latest standards (service news and modification program).

Things that need to be considered when carrying out maintenance work are as follows:

• Unless specifically instructed or special, do maintenance work with the engine turned off. When doing work with the state of engine life, work must be done by two people. An operator must sit in the seat and the other operators perform maintenance work. Both must work closely to ensure maximum safety.
• Hang warning signs (tags lock) to prevent others from operating the machine.
• Dispose of oil after the first heated to reach working temperature.
• Before opening the lid / cap radiator, first off pressure in it.
• Avoid opening the lid / cap tank and drain the oil when it is still hot.
• After the oil change, filter element replacement, cleaning, etc., do bleeding (exhaust) air if needed.
• For all the oil fill that uses a wire sieve, avoid opening the filter at the time of filling oil,
• Lubricants / oil should not be more or less than the specified standard. At the time of checking the oil level should show the appropriate size.
• When doing greasing, all the old grease should come out and replaced by the new grease, then wipe the grease that comes out of part digreasing.
• When doing oil changes, do the examination used oil, filters, and magnetic plug of powder / furious.
• When opening the parts that wear o-ring, wash stand, and replace it with a new one.

The things below are general warnings for safety in the implementation of the treatment:

• Use a helmet, safety shoes, gloves. Use goggles if necessary.
• If the maintenance work carried out by more than one person, guiding the job for the sake of the safety and prevent miscommunication.
• Prevent people who are not authorized to approach the unit being inspected.
• Always use spare parts recommended by manufacturer.
• Use oil, grease, coolant, which is recommended by the manufacturer.
• Use lubricant clean condition, good lubricant, place and means for charging process.
• Check or change the oil on a right that is not dusty, to prevent contamination.

Before performing maintenance process note the following:

• Parking units in a flat and hard, then the parking brake switch.
• If the work is done in an enclosed space, consider the air vents.
• Wash the unit in advance, especially that should be considered is the places filling and drain oil.

Hope it is useful! and Thanks for read.

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Caring Motorcycle Disk Brake

Motorcycle front brake is a brake disc portion. Disc brakes are used on motorcycles divided into two mechanical disc brakes and hydraulic disc brakes. Hydraulic disc brakes motorcycle basically the same as that used disc brakes on the car. In hydraulic disc brakes, braking occurs because of the brake fluid pressure to the brake so that the disc is clamped by the brake. As a result of these tongs rotating disc becomes obstructed. As a result, rotation of the wheel becomes blocked, the speed of the motorcycle or motorbike is reduced to a halt.

Other types of disc brake is a mechanical disc brakes. Mechanical disc brakes are actuated by the hand brake wire. The movement of the brake under the pressure of the brake lever which will move the brake lever if the brake handle is pulled. Mechanical disc brake construction is simpler so that maintenance is easier. In mechanical disc brakes, brake fluid disorders such as mixed with air in the channel as in hydraulic disc brakes no so no need for exhaust after disc brakes dismantled.

Caring Motorcycle Disk Brake

Inspection, adjustment and maintenance motorcycle disc brakes:

Hydraulic disc brakes

Remove the disc brake units and unloading parts. Note carefully the order of the passage to the installation again no trouble. Clean each component. Do not use gasoline or diesel fuel to wash the disc brake components as they may damage the components.

Measure the diameter of the cylinder, and compare it with the diameter should be. Larger diameter means that the cylinder is already too worn out and replaced emotion. Worn cylinder causing brake fluid leakage.

Measure the diameter of the brake piston. If the diameter is smaller outside the permitted limit means the pistons are too worn and should be replaced.

Check the condition of the piston seals, piston boot, pads and calipers his body. Damage to these components must be replaced immediately. Also check the state of the brake oil hose. Hose cracked, causing leakage of brake fluid should be replaced. Check if the hose is not clogged. For the inflatable with air, spray the hole channel for dirt flushed out.

Disassemble the master cylinder on the tiller and washing parts that have been dismantled with clean brake fluid. Do not wash the components with gasoline or other fuels because the components are made of rubber will be broken.

Measure the inner diameter of the cylinder and piston diameter carefully. Compare the measurement results with a standard diameter. If the outside diameter of the measurement means the provision of these components must be replaced.

Check for brake fluid leakage between the plastic tubes and master cylinder. If the leak does not mean that part is good. Re-assemble the components of the master cylinder carefully and note the following:

1. Installation of the primary cup do not reverse
2. Replace the brake lever peg pen with new and harden so that it snaps into place.
   Check the thickness of the brake disc. Compare with standard size. If a thick disk outside the provisions of the disc should be replaced. Clean the disc surface from dirt. Sand stuck causing rapid disc scratched. Oil inherent cause braking skid. Therefore clean the oil with alcohol and dry with a cloth. Check the brake disc bolts violence. Adjust the bolt violence with factory recommendation.
3. Discard / remove the existing air in the hydraulic brake system in the following ways:

• Attach air hose to the drain valve, hose ends are next soaked in brake fluid in the tube.
• Drag and drop repeatedly brake handle on the tiller.
• Hold the brake handle in the braking position (drag) and loosen the bolt release of air. Enlist the help of others to loosen the bolt release the air.
• Pump up the longer bolts air release. Brake handle is pulled and released over and over - again. Then hold the brake handle in the braking position (drag) and loosen the bolt release of air.
• Perform the job over and over - and over until the brake fluid out through the hose does not contain air bubbles. Meanwhile if the brake fluid runs out then add brake fluid to taste.

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