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Types of Air Compressors Are Essential Equipment for Professional Car Repair

Calipers can be used to measure length, outside diameter, inside diameter and depth.

Measuring range: 0 – 150, 200, 300mm.

Accuracy: 0.10; 0.02; 0.05mm.

b. Structure

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c. How to use

- Close the entire measuring head before measuring to check the accuracy of the caliper, requiring the zero line on the sliding scale to coincide with the zero line on the main scale.

- When measuring, move the measuring head gently so that the part is clamped tightly between the measuring heads.

- When the part is clamped firmly between the measuring heads, fix the slide rule by tightening the set screw to make it easy to read the measured value.

- Read measured value:

Value to 1mm, read on main scale (eg 13mm)

Values ​​less than 1mm to 0.05mm, read at the point where the slide scale line and the main scale line coincide (eg 0.40mm).

Total measured value = value on main scale + value on slide scale. For example, total measured value corresponding to diagram (17 – 22): 13 + 0.40 = 13.40mm.

Figure 1.22: Scale on panme

3.2.2. Panme

a. Uses: Pan me can be used to measure length, outer diameter, inner diameter and depth by calculating the corresponding rotation of the mobile measuring head in the axial direction. Measuring range: 0 – 25mm; 25 – 50mm; 50 – 75mm; 75 – 100mm. Measurement accuracy: 0.01mm.


Figure 1.23: Inside micrometer and depth micrometer


b. Structure: Depending on the function, panme has different types: outside panme, inside panme, deep panme. The following is a specific introduction to the structure and usage of outside panme.

Figure 1.24: Panme structure

c. How to use

Before using the panme, it is necessary to check to make sure that the 0 marks coincide with each other, by choosing a standard gauge, for example with a 50 - 75mm panme, place the 50mm standard gauge between the two measuring heads, mark the pressure limiting screw 2 - 3 turns, then check that the reference line on the body and the 0 mark on the rotating tube coincide.

- Place the fixed probe on the measured object and rotate the rotating tube until the movable tip touches the measured object, then rotate the probe a few turns and read the measured value.

- Read measured value:

Read the measurement value to 0.05mm: read the largest value that can be seen on the scale of the panme body (for example 9.5mm).

Read the measurement value from 0.01 – 0.05mm: read at the point where the scale on the rotating tube and the reference line on the panme body coincide (for example 0.48mm).

How to calculate the measurement value: 9.5 + 0.48 = 9.98mm.


Figure 1.25: Reading the value on the panme

3.2.3. Dial gauge

There are two types of dial gauges: external dial gauges and internal dial gauges.

a. Uses

External gauges are used to check geometrical shape deviations of parts (cone, curvature, ovality...) and relative positions between assembled parts or relative positions between surfaces on parts (parallelism, perpendicularity, inversion, warpage...).

Internal dial gauges are used to measure the geometric shape of holes to determine their wear.

b. Structure

The dial gauge is constructed on the principle of rack and pinion movement, in which the movement of the measuring rod is transmitted through the gear system to rotate the dial on the dial. The transmission system of the dial gauge is located in the body, the cover can be rotated along with the large dial to adjust the dial when necessary.

The small dial is divided into 10 intervals, each interval is 1mm, the large dial is divided into 100 intervals, each interval is 0.01mm, which means when the measuring bar slides up and down 0.1mm, the long hand rotates one interval. When the long hand rotates 1 revolution (100 intervals), the short hand rotates 1 interval.

The internal dial gauge has measuring rods of different sizes. When measuring, choose the appropriate length measuring rod depending on the size of the hole to be measured.

c. How to use

- Measurement operation

External comparator: mount and adjust the position of the comparator relative to the measured object, place the measuring head in contact with the measured object, rotate the outer rim of the comparator face so that the long needle points to the correct number 0, rotate the object to be measured and record the measured value.

Internal dial gauge: select the measuring rod suitable for the size of the hole to be measured, insert the measuring head into the hole vertically, shake the dial body horizontally to determine the smallest size of the hole.

- Read measured value

Measured value = (number of lines on small dial x 1mm) + (number of lines on large dial x 0.01mm).

Figure 1.26: Dial gauge


3.2.4. Leaf base

The leaf gauge, also known as the thickness gauge, is mainly used to measure the gap between two flat surfaces. The leaf gauge has 11 - 16 leaves, 100 - 150mm long and has many thicknesses from 0.01 - 1.0mm, folded together in a box. The leaf gauge has the structure as shown in Figure 17 - 27.



Figure 1.27: Leaf base


3.2.5. Force balance

Torque scales are used to tighten bolts and nuts to standard torque. Torque scales are of the following types:

Figure 1.28: Force balance


a. Pre-set type (Figure 1-28 a)

The required tightening torque can be preset by turning the adjusting knob. When the bolt is tightened to the selected torque, a click sound can be heard to indicate that the standard torque has been reached.

b. Leaf spring type (Figure 1-28 b)

The force balance works by means of an elastic bar, made in the form of a leaf spring, through which the force is supplied to the crank. The applied force can be read by a needle and a scale.

3.3. Equipment used in repair

3.3.1 Shell removal machine

This is a specialized device used to remove multi-purpose tires, helping you remove tires conveniently and quickly. It will also support you to pry tires, even with tubeless wheels, easily, quickly and save the most time possible.

3.3.2 Air compressor

Air compressors are a very important device in today's auto repair shops. This device will help you provide compressed air for pumping tires, supplying air for tire removal machines, blowing air or using guns to tighten bolts, etc. Air compressors have many different capacities and capacities. Depending on the purpose of use, you will choose the most suitable product.

Figure 1.29: Air compressors are essential tools for professional car repair.


3.3.3. Pneumatic impact wrench

For screws in motorbikes, especially scooters in important positions, to loosen or tighten the screws as tightly as possible, you must use a pneumatic bolt tightening gun. According to many users, you should use these pneumatic bolt tightening guns of brands such as Firebird from Taiwan or IR from the US,...

3.3.4 Motorcycle lift

Motorcycle lift is an indispensable tool when it comes to professional motorcycle repair tools, including what? Motorcycle lifts have 3 main types: mechanical and electric lifts, mechanical-only lifts, and underground motorcycle lifts. This device will help users lift and lower the motorcycle so that you can repair the parts under the vehicle in the most convenient way.

3.3.5 Electronic fuel injector cleaning machine

This device uses modern ultrasonic technology to restore and repair faulty injector parts, and will also help clean injectors most effectively.

3.3.6 Motorcycle combustion chamber cleaning machine

The machine uses the most modern electrolysis technology, helping to clean the carbon soot stuck inside the engine's combustion chamber. This will help the vehicle run smoother, as well as save fuel effectively.

3.3.7 Wheel straightening machine, fork straightening machine

In cases where the vehicle has a collision that causes the rim to be distorted or the frame to be bent, ... then you must use a rim straightener and frame straightener to repair it. However, this type of machine has a rather high price, so many users hesitate to own and use it.

3.3.8 Motorcycle diagnostic machine

This device helps you easily read, guide you to fix and delete electronic errors on current car models.

3.3.9 Other tools and equipment

In addition, a professional motorcycle repair kit also includes basic tools such as screwdrivers, wrenches, pliers, wrenches, screw guns, oil extractors, welding machines, stands, etc.

3.3.10 Tool cabinet

To store the above machines or equipment, a professional tool cabinet is also indispensable. This cabinet will help you store machines, equipment and tools neatly, orderly and easily find when needed.

3.3.1. Hans Tool TTBK-116L repair tool box

Figure 1.30: Hans Tool TTBK-116L tool set

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