Posts in Category: Blog

The clutch

The clutch is one of the most demanded the components of a vehicle. However, few know how a clutch, which consists of or what problems can occur when it fails. In the following material we will talk about clutch and the components thereof, as used properly, it must be changed and how to fix certain problems that may arise from the operation of these components. We’ll learn how to protect it and thus save money.

The clutch is a system that uses friction to transmit energy from side to side. It can be considered a consumable because at some point, it must be changed due to wear and tear undergone by every day. It is composed of a revolving disc and pressure plate (the consumable, which usually change after a long period of use), housing, engaging fork and of course several screws.

The clutch we meet everywhere, even in cars with automatic gearbox but several forms. For example, it can be seen in the form of friction wheels that move by means of a hydraulic fluid. They are inside the gearbox. Clutch role is to make the connection between shaft and shaft driven by motor driven gearbox, so they have the same speed. When the pedal is free, and the clutch is engaged when the clutch pedal is depressed and then unplug the motor shaft and gearbox will have different speeds.

After a certain period, each of us can have problems with the clutch. The most common problem is the clutch slipping. This problem occurs when those who stand with their foot on the clutch throughout the drive. Will see an increase in engine speed even when the vehicle is stationary. Another problem would be the bearing pressure. It makes a noise wished clutch pedal is depressed. Our advice is to go to a service station. Often clutch energizes very difficult to reach and remove a metallic sound. So, must depress the clutch to bottom.

A new clutch can last you about 100 000 km. To extend the life of the clutch is good when you release the pedal clutch to do it easily without her sudden but carefully not to do any very, very slow because such friction material will heat very much and will affect the disc springs. It is important to not keep your foot on the clutch while driving and not to force him especially in hill climbing. Departure from the location will always first rate because the higher speed clutch will suffer being overworked.

In conclusion, progressive clutch transmits the rotation from the engine to the gearbox, protects the transmission engages or disengages the motor overload and transmission in order to change speeds and allows us to be able stationary with the engine running.

Objectives of mechanics

The goals for anyone who enters the automotive field as a service technician or mechanic involves a good program of study and early education in the background of automotive repair. Education can begin in high school and culminate with college courses or state training programs. The opportunities of the automotive industry are vast, covering all aspects of trade in areas of specialty and general repair in both domestic and foreign repair.

Make the decision

A primary goal of all mechanics has to do with a deep need and a desire to learn and profit even from the most crucial mistakes. Making the decision to become a mechanic or stay as one is vital to the motivation needed to work. The automotive field requires many hours, deadlines, serious research and diagnostic skills and will to stay at the forefront of the ever-changing climate of automotive repair and technology. It requires a certain amount of physical capacity and alert to detail and security measures.

Education

Another objective has to do with continuing education. The education of a mechanic plays a vital role in their preparation. Colleges and universities offer courses of study, with certifications and degrees. A mechanic must have a broad and varied background in issues that have to do with all areas of the automotive field, whether associated with engineering, pre-delivery service, warranty on the job or internal engine repairs . A mechanic can specialize and obtain training certificates for unique vehicle models if you want to work for a specific dealer. You can generalize and join a company that offers all aspects of light repair and maintenance. You can also enroll in a master’s degree program.

Advanced training

Advanced training, such as taking and completing Automotive Service Excellence courses, shows that the mechanic understands the importance of completing all major tests and subject areas for automotive repair. Completing courses at ASE gives the mechanic the right to use the approved seal on uniforms. A mechanic must attend the seminars for specific repairs related to public safety.

Personal appearance

A mechanic must have good hygiene every day, dress in the company uniform, bring his hair short as well as beard, according to company policy. One of its objectives requires that you represent the company, socialize with customers and present the image of a qualified professional. In many places, a mechanic represents the name of a brand, model of vehicle or product, and must demonstrate that their habits and appearance equate to their knowledge. Your tools and your workstation should have a positive reflection of your ability to keep things clean and in order.

Persistence

One of the main goals of any mechanic involves the persistence and willingness to continue a job until it is complete, no matter how difficult the task or operation. A mechanic must have a well-tuned system of detection and diagnostic skills, which involves a systematic process of elimination that eventually solves the most difficult or elusive problems. You should be well versed, and be able to read the workshop manuals, finding the repair area explanations quickly and then implementing them.

Attitude

A mechanic must keep his temperament and emotions in check at all times, wanting to negotiate and enlighten clients. You must follow your supervisor’s instructions without complaining or rebelling. Your attitude, during difficult or time-consuming repair procedures, should be positive and optimistic. If you encounter seemingly impossible repairs and tasks, you should ask your colleagues or senior members for advice and advice.

Thread Tools

A mechanic who has obtained and mastered the use of specialty tools and diagnostic machines will significantly reduce their working time. It uses the right tools for jobs instead of replacing the inadequate tools and machines for a repair that could be compromised if substandard equipment is used.

Main duties of a mechanic

Automotive mechanics are a vital part of the driving, maintenance and repair culture of both individual and fleet vehicles. Automotive mechanics or technicians use a variety of special tools to keep cars and trucks safe and efficient. His work includes several essential obligations.

Basic maintenance

One of the basic duties of a mechanic is the routine maintenance of properly functioning automotive. This includes rotating tires, changing engine oil, replacing oil and fuel filters, inflating tires, replacing worn brake pads and pads, and filling engine compartment fluids to the top. The mechanics who work in the dealerships perform the routine maintenance of the new vehicles that are for sale, as well as of the clients who carry them regularly.

Inspections

In some states, such as New York, certified mechanics also conduct annual safety inspections that vehicles must approve to be able to circulate. These inspections involve the control of many different aspects related to vehicle safety equipment that includes mirror, horn, brakes, tire wear and exterior lights. Inspectors can make minor repairs such as changing light bulbs to grant vehicle approval. Other states, request occasional gas emissions inspections or smog tests. A mechanic adjusts sensors to the vehicle and starts the engine to measure its carbon emissions, then issues a report certifying whether or not it meets state standards.

General repairs

The main part of a mechanic’s duties is troubleshooting and repairs. Drivers describe a recurring inconvenience or detect some alarm symptoms. Then, the mechanics diagnose what is and estimate a budget for the repair. Once the customer authorizes the work, they order parts and perform the repair. They repair all vehicle systems, including brakes, wheels, engine, transmission, exhaust systems, electrical systems and safety equipment.

Bodywork

Some mechanics, known as chippers, work with vehicles damaged in accidents. They use a special machine to restore the original shape, then repair the body replacing and rectifying deformed panels. They also deal with polishing and repainting and replacing broken glass.

Reconstruction

Some mechanics are in charge of rebuilding old vehicles that need a lot of work. These rebuilders or investigators should investigate to determine how a particular model looked in the past, including accessories, paint colors and engines. Other restoration mechanics completely build custom vehicles by combining existing components with new parts. In both cases, each project takes a lot of time and produces vehicles that are really unique and sold at very high prices.

Is An Auto Or Mechanical Better?

One of the big doubts when we buy a car today is to choose the transmission that our unit will use. In the early years it was almost a fact that the chosen one had to be a mechanic, but the automatic ones have been improving several years and turned the stage into a great competition.

But to make a wise decision first we must have clear the characteristics of each of the types. The automatic cars are those with a technology that allows the unit to the relationships automatically without having to stop the car. For its correct operation depends on the state of the torque converter, planetary gear assembly and fluid coupling.

A mechanical auto is one to which the gear changes must be done manually and with the use of the clutch. The system is based on the transportation of the force and the horsepower towards the axles of the tires.

There is actually no formula to indicate which of the two propulsion systems is best. Everything depends on the tastes of the driver himself and that those involved feel more safety and comfort in each of these.

The main characteristics of the automatic and mechanical auto are:

  • The automatic provides greater comfort.
  • The mechanic major control.
  • The automatic provides greater security.
  • The start of the mechanic is more powerful.
  • The automatic spends more fuel.
  • The mechanic needs more sacrifice for the handling and control of the clutch.

How to weld cast iron gear teeth

Cast-toothed wheels require special attention when one of the teeth needs repair. Because the structure of carbon and iron content varies, if not materials, generally poor technique and choice of welding material are culprits. However, with the right precautions and techniques, the teeth can be welded to the gear wheel in full force, and the parts machined to the proper proportions.

Instructions

  1. Determine the type of iron used for the gear wheel and teeth; nothing other than white cast iron can be welded. Use the application as a guide: more welded gray iron gears are thrown. Otherwise, be guided by the grain and texture of the metal, or a test sample.
  2. Heat the wheel surface and gear the teeth, if possible, in the oven or with a heating coil. For protected arc welding, heat between 500 and 1,200 degrees Fahrenheit. For oxyacetylene welding, heat to between 900 and 1,200 degrees. Do not allow the metal base to approach 1400 degrees or higher, as it may crack. Heating the metal in the proper range prior to welding ensures a high probability of successful welding for cast iron.
  3. Weld the tooth back to the wheel by butt welding on all four sides of the tooth. Cast iron welding is ideal; Otherwise, autogenously welding. The less preferred options are use of nickel or steel, as these will cause the base metal to harden beyond manufacturability. Work slowly and steadily during the welding process, to maintain the constant heat reached during the preparatory heating process.
  4. Cool welding very slowly to reduce the risk of cracking or other structural compromises.

Tips & Warnings

  • Take precaution when welding; Wear all proper safety equipment to protect your body from sparks and hot metal. Test the welding carefully before putting the gear wheel back into service.

How to read an oil pressure gauge needle Two

The oil pressure is an important indicator for tanks and commercial vehicles and oil consumption. Mechanical gauges tubes working oil pressure sensitive connected to each pressure line. An oil pressure gauge has two needles two systems separate Bourdon tube and needles in the lateral aspect connected to two separate oil tanks or lines.

Things You’ll Need

  • Gauge
  • Indicator manual oil tank oil double needle or vehicle manual system
  • Conversion unit Pressure Chart

Instructions

  1. Inspect the oil pressure gauge face two needles. Observe the pressure scale and units. For example, a measure of typical oil tank may have a scale of 0 to 500. Ensure that the units of pressure in pounds per square inch.
  2. Familiarize yourself with the scale of the gauge pressure reading manual if the units are not in PSI. For example, the scale can be in units called “bars”. Convert PSI unknown to households on a piece of paper with a conversion table if the tank or pressure line system is European or Asian, so you can understand the reading.
  3. Note the position of each of the two needles on the gauge face. While the needle is below the zero point of the scale or both hands indicate the same pressure, the indicator could be damaged or out of calibration. Refer to the meter fix manual.
  4. Identify the tank or line each needle indicates the oil pressure. Refer to the vehicle tank or oil this information manually. Normally, the two needles in face oil pressure gauge will be different colors. The manual should identify which needle color indicates that the tank or line pressure, if this information is not marked on the lateral side.
  5. Read the oil tank or two line pressures indicated by the two hands of different color. Note the readings on a piece of paper, making sure to note that the tank or line side are each reading. Compare the readings of standard tank or line pressure varies as specified in the system manual.
  6. Follow troubleshooting and mitigation of the steps in the system manual to correct the situation if one of the two oil pressure indicated by the gauge double-needle oil are higher or lower than the normal range.

How to know if an alternator is failing?

An alternator on a car engine is essentially the generator. The purpose of the alternator is to convert gasoline into energy that can power the electrical components of your vehicle, including replacement of the battery power. The alternator is essential to keep the car running for a long time. With a little observation, it is easy to know when an alternator is failing and needs to be replaced before it becomes a real problem.

Instructions

  1. Keep attention in light of the “battery” or “alternator”. This light should appear on your dashboard when the car is turned on (if not, you may have blown), but should not be on when you are driving. If it does, it is a sign that something is wrong with the alternator or battery.
  2. Turn on the turn signal. If it blinks at a slower pace than the other, or if it is blinking at a slower than normal speed, the alternator may be the real culprit. Other possible signs that the dash lights are dim or flashing are included, the power steering stops working (the wheel becomes stiff) or attenuation of the light beam.
  3. Listen to your engine. A birdie from the alternator can be a sign that the bearings are wearing out. A loud squeal can also be indicative of a failure of the alternator or the alternator belt is worn.
  4. Check your alternator. If you do not know where your alternator is, look at the label with the configuration table of the pulley on the front of the engine. The alternator is labeled ALT, alternator, or GEN generator. The alternator is near the front of the engine. Once you find the alternator, if the belt is worn or thin, or if there are chips on the alternator belt, then you should replace the belt. Also it could be a sign that the alternator is failing.
  5. Use a voltmeter set to DC scale. Place the red wire to the positive terminal of the battery and the black cable to the negative or ground. Start the car and turn off all accessories (heater, radio, lights) . Rev the engine. The voltage should be around 14 volts. If less than 12, then there is a good chance you have a faulty alternator. Turn all accessories and check the engine again. If the voltmeter reads less than 13 volts, then there is a good chance that your alternator is bad. Most auto parts stores are willing to do this for you for free.
  6. Remove the alternator and do a review of the discharge. This will be the final and definitive test. If you cannot get it out of your engine and take it to an automotive shop, need a mechanic to perform this test.

Tips and Warnings

If you had to make your car start at second several times in the last week to get it going, then you should check the alternator and battery.

Always be careful when considering the engine while it is running.

How to diagnose a cooling system problem

There are a number of things that can go wrong with the cooling system of the car, causing the engine to warm up more than necessary. The following is a list of things you can easily check on your own; also never hurts to expand your knowledge about cars.

You will need

  • Radiator sealant
  • Antifreeze
  • Water
  • Phones

Instructions

  1. You must understand that the problems of overheating can be caused by low coolant, plugged radiator, the thermostat may be stuck or other problems common cooling system.
  2. Check the coolant level in the tank reservation to see if you have little coolant (check out “How to check the coolant level in your car” in the related articles). Add coolant if necessary.
  3. Open the lid and look inside the radiator when the engine is cold.
  4. Fill the radiator with a mixture of 50/50 antifreeze and water, if it is low or empty, and close the lid.
  5. Check the upper and lower radiator hose, located on the top and bottom of the radiator at the rear and grasped by clamps. Make sure the hoses are tightly clasped and did not leak.
  6. Touch both hoses when the engine is slightly warm and the car off. Both should be a little hot. If ever you are cold, you could have a stuck thermostat.
  7. Use the palm of your hand to feel from the outside of the radiator from the top down when the engine is hot and the car slightly off. It should be warm to touch evenly throughout the radiator. If there is a cold section, you could have an internal blockage in the radiator.
  8. Check under your car, inspect the radiator and the engine looks around for signs indicating coolant drip chamber. It is usually green, viscous and sweet smelling.
  9. If there is a puddle of coolant under your car could be due to a failure of the water pump or a broken coolant tank.
  10. Visit your mechanic if you know you have a leak but cannot find. A mechanic can detect a small leakage of pressurized coolant to the cooling system.

Tips and Warnings

  • A loose fan belt or a fan is not operating can cause overheating, although there is enough coolant.
  • A belt water pump loose or broken water pump can also cause overheating, although there is enough coolant.
  • You can add water coolant and coolant plastic container when the engine is hot, but not in the radiator.
  • The coolant is a mixture of 50/50 of water and antifreeze. It is best to keep this ratio when you add the coolant tank or radiator.
  • The cars manufactured before 1970 do not have a plastic coolant tank, you must wait for it to cool the engine before adding fluid. Some older models have an added bag.
  • Coolant can leak inside the car, usually in the floor of the passenger if there is a leak in the central heating. When the central heating is turned off, the windscreen is temporarily tarnish from within.
  • Never drive your car when the gauge needle temperature on the board is in the red area; stop and turn off the engine before you Dane.
  • Do not open the radiator cap in a car with a hot or overheated engine, the coolant is under pressure.
  • The German and Swedish cars have a tank of reserve coolant plastic is also pressurized, do not open when the engine is hot.
  • Coolant can injure or kill animals if ingested. The animals attract the sweet taste of coolant, so clean the remains and do not leave open containers of coolant around animals.

How to clean corroded battery cells

Most portable electronic devices require some type of battery. Many of the newer devices are based on lithium-ion batteries, but removable batteries like AA or AAA are still in use in products like flashlights and remote controls.

Over time, if the batteries are exposed to moisture may corrode the elements and dirty inside the device. This dirt not only prevents the product to work properly, but it is dangerous for the atmosphere and the environment. With this in mind, it is important to clean the corroded element.

Instructions

  1. Remove the batteries corroded device and discard.
  2. Dip a towel in white vinegar and clean the battery. If the bin is too small you can use a cotton swab. The acid in the vinegar helps break down corrosion and remove the hardware.
  3. Brush the inside of the device with a bottle brush or other brush with wire teeth. The brush scraping the remains of corrosion.
  4. Clean the inside of the appliance with water with the locking device. If you are using an MP3 player or other device with internal cables avoid using water because it can damage the entire team. If badly corroded you can use a damp cloth to clean the debris, and then leave the device in a well-ventilated area for a day or two.
  5. Dry the equipment with a soft towel and let it sit before trying to put the batteries back. Insert batteries in a controller or other device wet corrosion and cause even more damage.

You need

  • White vinegar
  • Water
  • Towel
  • Cotton swab

Advice

  • Be sure not to turn on your computer while it is damp or wet. This can make the circuit court.

How to change the thermostat on a Jeep Grand Cherokee

Available for over 30 years, the Grand Cherokee is a popular model offered by Jeep. Whatever the type of engine or year you may have, the process of replacing the thermostat on a Grand Cherokee remains the same. If you have overheating problems with your Jeep, here you’ll see how to change the thermostat.

You will need

  • Container
  • Adjustable tool clamp or pliers
  • Thermostat and gasket
  • 10mm socket or wrench
  • Razor blade
  • Flathead screwdriver (if needed)

Instructions

  1. Open the valve on the radiator to drain the coolant in your Jeep Grand Cherokee. This is in the lower right to the back of your Cherokee. Use an airtight container and reused if the coolant is relatively new and clean.
  2. Follow the upper radiator hose to the point where it meets the thermostat housing. The thermostat is located inside the housing. Use a tool or an adjustable clamp pliers to loosen the clamp that holds the hose to the housing. Works at the end of the radiator hose to release it from the thermostat housing.
  3. Remove the two screws holding the top of the thermostat housing. Remove the cover. Notes the position of the old thermostat. Removes and installs the new thermostat in the same position.
  4. Scrape residue thermostat seal the inside of the top of the thermostat housing using a razor blade. Prevents debris from falling into the thermostat housing.
  5. Install new gasket. Replace the cover of the thermostat housing and radiator hose. Turn on your Jeep Cherokee and do operate the heater at full power. Let the engine warm up. Check for leaks.

Tips and Warnings

  • In some models of the Jeep Grand Cherokee, the lower band can be on the road to access the lower bolt of the thermostat housing, if the entire housing must be removed. You’ll have to remove the lower band in this case. Use a flathead screwdriver to work at the end of the radiator hose and release it from the thermostat housing, if necessary.
  • No drains fluid from your Grand Cherokee when the engine is hot. Let the engine cool before draining coolant.