Mercedes Benz service report

1. A report on industrial training at
Mercedes Benz Service Centre
Mercedes-Benz
Benchmark Cars
From 10th May – 10th June
Prepared by:- Mohammed Wajahat khan
Department of Mechanical Engineering

3. Abstract
As a Mechanical Engineering student I m very interested in
Automobile Engineering. I am always keen to learn different
mechanisms used in vehicles, I used to watch animated
videos on YouTube automobile mechanisms like Differential,
Automatic Transmission gearbox, etc, but never have I ever
got a chance to watch it in real. So, it was a dream come true
for me when I got approved to intern at Mercedes Benz
Service Centre Benchmark Cars Bhopal. The program was
concentrated on car services, repairs if needed, accidental
repairments accompanied with the reliability and customer
satisfaction. At the beginning of my internship I had several
queries in my mind about various technologies used in
Mercedes Benz an what skills are needed for the
organisation. During my internship several queries were
cleared by performing various service activities and further
were cleared by highly skilled and trained professional
technicians who acted like friend and mentor guiding my in
every possible way upgrading me with the latest knowledge.
Apart from the technical skills I also get to learn about the
rules and safety instructions, inventory control, quality
management skill and job responsibility. I realise that
responsibility of technicians over a car. I found out how much I
m strong in automotive field. It was the greatest experience of
my life meeting new peoples and gaining new knowledge
everyday.

4. CONTENTS
Company Overview
• Introduction
• History
Production
• Factories
• Quality Ranking
Models
Car Nomenclature
Logo History
Innovation
• Turbocharger
• Turbocharger vs Supercharger
• Wheel Alignment
• Primary Angle
• Caster Angle
• Chamfer Angle
• Toe Angle
• Wheel or Tire Balance
• Disc brakes
• Parking Brakes
• ABR
Anti lock Braking System
Automatic Transmission
• Automatic Transmission modes

5. Exhaust Gas Recirculation (EGR)
Engine Control unit
• Working of Engine Control Unit
Steering System
• Introduction
• Function
• Components
• Components of Steering System
• Types of Steering System
Working In Workshop
 How to read tyre size
 Brake Booster
 Types of Filters
 Engine Air Filter
 Engine Oil Filter
 Fuel Filter
 Cabin Air Filter
 Different Types of Oils and its Importance
 Engine oil
 Transmission Oil
 Brake Fluid
 Brakes
Conclusion

6. Acknowledgement
It is always pleasure to remind the fine people in the
engineering workshops and college for their sincere guidance
to uphold my practical as well as theoretical skill in
engineering.
I express my profound gratitude to our H.O.D ‘Dr. Chittresh
Nayak’ and all the faculty members of the Mechanical
Department for taking pains to guide me in the preparation of
this industrial training report.
Firstly, I would like to thank _____________,
____________and _____________ which gives me to
opportunity to work as a trainees in Mercedes Benz-
Benchmark Cars.
Secondly, I would like to thank my technician Mr. Irfan, Mr.
Firoz, Mr. Asif, and which gives support and guidance I
received from them almost for all the work I did there.
Finally I apologize all other unnamed who helped me in
various ways to have a good training.

7. Introduction
Mercedes- Benz is a German automobile manufacture, a
multinational division of the German manufacture Daimler
AG. The brand is used for luxury automobiles, buses,
coaches, and trucks. The headquarters of Mercedes-Benz
is in Stuttgart, Baden-Wurttemberg, Germany. The name
first appeared in 1926 under Daimler AG but traces its
origins to Daimler-Motoren-Gesellschaft’s 1901 Mercedes
and Karl Benz’s 1886 Benz patent Motorwagen, which is
widely regarded as the first automobile. Mercedes- Benz’s
slogan is “Das Beste oder nichts”(English: ”The best or
nothing”). Mercedes-Benz is part of the “German Big 3”
luxury automakers, along with Audi and BMW, which are
the best-selling luxury automakers in the world.
History
Mercedes-Benz traces its origins to Karl Benz’s creation
of the first petrol-powered car, the Benz Patent
Motorwagen, financed by Bertha Benz and patented in
January1886, and Gottlieb Daimler and engineer Wilhem
Maybach’s conversion of a stagecoach by the addition
of a petrol engine later that year. The Mercedes
automobile was first marketed in 1901 by Daimler-
Motoren-Gesellschaft’s. The first Mercedes- Benz brand
name vehicles were produced in 1926, following the
merger of Karl Benz’s and Gottlieb Daimler’s companies
Company Overview

8. Throughout the 1930s, Mercedes-Benz produced the
770 model, a car that was popular during Germany ‘s
Nazi period. Adolf Hitler was known to have driven
these cars during his time in power, with bulletproof
windshields. Most of the surviving models have been
sold at the auction to private buyers. One of them is
currently on display at the War Museum in Ottawa,
Ontario. Mercedes- Benz has introduced many
technological and safety innovations that later became
common in the vehicles. Mercedes-Benz is one of the
best known and established. automotive brands in the
world, and is also one of the world oldest automotive
brand still in existence today in 2014, having produced
the first petrol-powered car.

9. Production
Factories:- Besides its native Germany, Mercedes-Benz
vehicles are also manufactured or assembled in:
• Argentina –manufactures buses, trucks and the spinter van.
This is the first Mercedes-Benz factory outside of Germany .
Built in 1951.
• Austria (G-Class)
• Bosnia and Herzegovina
• Brazil-manufacture trucks and buses.
• Established in 1956.
• The A-Class (W168) was produced from 1999 to 2005 and
the C-Class was produced until 2010 as well.
• Canada
• China
• Egypt
• India, Bangalore(R&D)
• India(Pune)
• India, Chennai (Daimler India Commercial Vehicles Pvt.
Ltd.)- Trucks & Engine Manufacturing unit
• Indonesia
• Malaysia
• Mexico Nigeria Philippines Russia Spain South
Africa South Korea United kingdom
• United states
• Jordan: buses company factory Elba House, Amman

10. Quality Ranking:-
Since its inception, Mercedes-Benz had maintained a
reputation for its quality and durability. Objective measures
looking at passenger vehicles, such as J.D. Power surveys,
demonstrated a downturn in reputation in these criteria in the
late 1990s and early 2000s. By mid-2005, Mercedes
temporarily returned to the industry average for initial quality, a
measure of problems after the first 90 days of ownership,
according to J.D. power. For 2008, Mercedes-Benz’s initial
quality rating improved by yet another mark, to fourth place.
On top of this accolade, it also received the Platinum Plant
Quality Award for its Mercedes’s Sindelfingen, Germany
assembly plant.

11. Models
• A-Class-Hatchback
• B-Class-Multi Purpose vehicle(MPV)
• C-Class-Saloon, Estate &Coupe
• CL-Class-Luxury coupe
• CLA-Class-4 Door coupe
• CLS-Class-4 Door Coupe and Estate
• E-Class-Saloon, Estate, Coupe and Cabriolet
• G-Class-Sports Utility Vehicle (SUV)
• GL-Class-Sports Utility Vehicle (SUV)
• GLA-Class-Sports Utility Vehicle (SUV)
• GLB-Class-Sports Utility Vehicle (SUV)
• GLK-Class-Sports Utility Vehicle (SUV)
• M-Class-Sports Utility Vehicle (SUV)
• R-Class-Multi Purpose Vehicle (MPV)
• S-Class-Luxury Sedan
• SL-Class-Roadster
• SLK-Class-Roadster
• SLS AMG- Coupe and Roadster
• Viano-Multi Purpose Vehicle (MPV)
• Citan-Mini MPV

14. Car Nomenclature
Until 1994, Mercedes-Benz used an alphanumeric system for
categorizing their vehicles, consisting of a number sequence
approximately equal to the engine’s displacement in liters
multiplied by 100, followed by an arrangement of alphabetical
suffixes indicating body style and engine type.
• “C” indicates a coupe or cabriolet body style.
• “D” indicates the vehicle is equipped with a diesel engine.
• “E” (for “Einspritzung”) indicates the vehicles engine is
equipped with petrol fuel injection. In most cases (the 600
limousine being the exception), if neither “E” or “D” is
present, the vehicle has a petrol engine with carburetor.
• “G” indicates the Gelande wagon off-road vehicles.
• “K” was used in the 1930s, indicating a supercharger
(“Kompressor”) equipped engine. One exception is the SSK,
where K indicates “Kurz”(short- wheelbase).
• “L” indicates “Leicht”(lightweight) for sporting models, and
“Lang”(long- wheelbase) for sedan models.
• “R” indicates “Rennen”(racing), used for racing cars (e.g. 300
SLR)
• “S” Sonderklasse “Special Class” for flagship models.
• “T” indicates “Touring” and an estate (or station wagon) body
style. Some models carry further designations indicating
special features:
i) “4MATIC” indicates the vehicle is equipped with all-wheel-
drive.
ii) “Blue TEC” indicates a diesel engine with selective catalytic
reduction exhaust aftertreatment.

15. Logo History
iv) “CGI” (Charged Gasoline Injection) indicates direct gasoline
injection.
v) “CDI” (Common-rail Direct Injection) indicates a common-
rail diesel engine.
vi) “Hybrid” indicates a gasoline or diesel-electric hybrid.
vii) “Kompressor” indicates a supercharged engine.
viii) “Turbo” indicates a turbocharged engine, only used on A-,
B-, E- and GLK- Class models.
ix) “AMG Line” indicates the interior or engine, depending
which car, has been fitted with the luxuries of
their AMG sports cars.

16. Innovations
Numerous technological innovations have been introduced on
Mercedes –Benz automobiles throughout the many years of
their production, including:
• The internal combustion engine automobile was developed
independently by Benz and Daimler & Maybach in 1886
• Daimler invented the honeycomb radiator of the type still
used on all water – cooled vehicles today.
• Daimler invented the float carburetor which was used until
replaced by fuel injection.
• The first passenger road car to have brakes on all four
wheels (1924)
• In 1936, the Mercedes –Benz 260 D was the first diesel
powered passenger car.
• Mercedes –Benz were the first to offer direct fuel injection
on the Mercedes –Benz 300SL Gullwing
• The “safety cage” or “safety cell” construction with front
and rear crumple zones was first developed by Mercedes –
Benz in 1951. This is considered by many as the most
important innovation in automobile construction from a
safety standpoint.
• An Anti-Lock Breaking System (ABS) was first offered on
the W116 450SEL 6.9. They became standard on the W126
S-class starting production in 1979, and first sold in most
markets in 1980.
• Airbags were first introduced in the European market,
beginning with model year 1981 s-class.
• Mercedes –Benz was the first to introduce pre – tensioners
will tighten the belt instantaneously, removing any ‘slack’ in

17. • Electronic Stability Programme (ESP), brake assist, and many
other types of safety equipment were all developed, tested,
and implemented into passenger cars-first –by Mercedes –
Benz. Mercedes –Benz has not made a large fuss about its
innovation, and has even licensed them for use by
competitors-in the name of improving automobile and
passenger safety. As a result, crumple zones and anti-locks
brakes (ABS) are now standard on all modern vehicles.
• The (W211) E320 CDI which has a variable geometry
turbocharger (VGT) 3.0-litre V6 common rail diesel engine
(producing 224 hp or 167 kw), set three world endurance
records.
Turbocharger :-
A turbocharger, or turbo (colloquialism), from Latin "turbo"
("spinning top"), is a turbine-driven forced induction device
that increases an engine's efficiency and power by forcing extra
air into the combustion chamber. This improvement over a
naturally aspirated engine's output results because the turbine
can force more air, and proportionately more fuel, into the
combustion chamber than atmospheric pressure alone.

18. Turbocharger vs Supercharger
In contrast to turbochargers, superchargers are mechanically
driven by the engine. Belts, chains, shafts, and gears are
common methods of powering a supercharger, placing a
mechanical load on the engine By comparison, a turbocharger
does not place a direct mechanical load on the engine,
although turbochargers place exhaust back pressure on
engines, increasing pumping losses. This is more efficient,
because it uses the otherwise wasted energy of the exhaust gas
to drive the compressor. In contrast to supercharging, the
primary disadvantage of turbocharger is what is referred to as
"lag" or "spool time". This is the time between the demand for
an increase in power (the throttle being opened) and the
turbocharger(s) providing increased intake pressure, and hence
increased power.
Wheel Alignment
Wheel alignment, sometimes referred to as breaking or
tracking, is part of standard automobile maintenance that
consists of adjusting the angles of the wheels so that they are
set to the car maker's specification. The purpose of these
adjustments is to reduce tire wear, and to ensure that vehicle
travel is straight and true (without "pulling" to one side).
Alignment angles can also be altered beyond the maker's
specifications to obtain a specific handling characteristic.
Motorsport and off-road applications may call for angles to be

19. Primary angle
The primary angles are the basic angle alignment of the
wheels relative to each other and to the car body. These
adjustments are the camber, caster and toe. On some cars,
not all of these can be adjusted on every wheel. These three
parameters can be further categorized into front and rear
(with no caster on the rear, typically not being steered
wheels) so summarily the parameters are:
• Front: Caster (left & right)
• Front: Camber (left & right)
• Front: Toe (left, right & total)
• Rear: Camber (left & right)
• Rear: Toe (left, right & total)
Caster Angle
The caster angle or castor angle is the angular displacement
from the vertical axis of the suspension of a steered wheel in
a car, bicycle or other vehicle, measured in the longitudinal
direction. It is the angle between the pivot line (in a car an
imaginary line that runs through the center of the upper ball
joint to the center of the lower ball joint) and vertical. Car
racers sometimes adjust caster angle to optimize their car's
handling characteristics in particular driving situations.
Camber Angle
Camber angle is the angle made by the wheels of a vehicle;
specifically, it
is the angle between the vertical axis of the wheels used for
steering and the vertical axis of the vehicle when viewed from

20. Toe Angle
Positive toe, or toe in, is the front of the wheel pointing in
towards the center line of the vehicle. Negative toe, or toe
out, is the front of the wheel pointing away from the center
line of the vehicle. Toe can be measured in linear units, at the
front of the tire, or as an angular deflection.
Important:-
• Toe-Inward and outward or left and right
Steering rack
• Camber-Shocker
• Caster-lower arm
Tools and Machines:-
Target or Tire clamp adaptor:-fixed to all wheels helps to
measure angel with help of sensors.
Turning angel gauge:-
Turning angel gauge plate helps
to easily turn Angel-(45-0-45) degree.
Tire Changer:- changes tire from wheel easily and
comfortably.

21. Wheel or tire Balance:-
Tire balance, also referred to as tire unbalance or imbalance,
describes the distribution of mass within an automobile tire
the entire wheel to which it is attached.
An automotive technician installing
wheel weights on a wheel balancing
machine.
Zinc Tire Weight
• Tire + Rim= Wheel
• Tubeless wheel is used
• Tire pressure conversion with unit 1KPa=0.145PSI
• Romess electronic –Airmatic height calibration-in wheel
Disc Brakes:-
A disc brake is a wheel brake that slows rotation of the wheel
by the friction caused by pushing brake pads against a brake
disc with a set of calipers. The brake disc is usually made of
cast iron, but may in some cases be made of composites
such as reinforced carbon–carbon or ceramic matrix
composites. This is connected to the wheel and/or the axle.

22. mounted on a device called a brake caliper, is forced
mechanically, hydraulically, pneumatically, or
electromagnetically against both sides of the disc. Friction
causes the disc and attached wheel to slow or stop. Brakes
convert motion to heat, and if the brakes get too hot, they
become less effective, a phenomenon known as brake fade.
Compared to drum brakes, disc brakes offer better stopping
performance, because the disc is more readily cooled.
Carbon Ceramic Brakes used in Mercedes Benz AMG
Parking Brake:-
In cars, the parking brake, also called hand brake, erroneously
called emergency brake, or e-brake, is a latching brake usually
used to keep the vehicle stationary. It is sometimes also used
to prevent a vehicle from rolling when the operator needs
both feet to operate the clutch and throttle pedals.
Automobile hand brakes usually consist of a cable directly
connected to the brake mechanism on one end and to a lever
or foot pedal at the driver's position. The mechanism is often a
hand-operated lever (hence the hand brake name), on the
floor on either side of the driver, or a pull handle located
below and near the steering wheel column, or a (foot-

23. ABR
ADAPTIVE BRAKE extends the scope of ESP® to include a
convenient Hill Start Assist feature and the HOLD function,
which automatically prevents the vehicle from rolling forwards
or backwards unintentionally from a stationary position.
ADAPTIVE BRAKE extends the scope of the familiar Electronic
Stability Program (ESP®) to include Hill Start Assist and the
HOLD function.
Braking is now even more safe and convenient – with
ADAPTIVE BRAKE, which employs the ESP®-integrated control
functions of the Antilock Brake System (ABS), Acceleration Skid
Control (ASR) and BAS Brake Assist. With the aid of additional
software components, new convenience- and safety-related
features have been realized in the form of Hill Start Assist and
the HOLD function. The HOLD function is activated when the
driver steps briefly on the brake again while the vehicle is
stationary. The vehicle is then held at a standstill – preventing it
from rolling unintentionally forward or backward – without the
driver having to keep his foot on the brake pedal.
Hill Start Assist takes the worry out of uphill starts. It prevents
the car from rolling back in the opposite direction to the
engaged gear as the driver moves his foot from the brake
pedal to the accelerator pedal. This function comes into effect
from a certain gradient.
Important:-
• ABR assists the driver in dangerous situations which occur
suddenly and thus serves active safety.

24. Anti locking Braking system
Anti-lock braking system (ABS) is an automobile safety system
that allows the wheels on a motor vehicle to maintain tractive
contact with the road surface according to driver inputs while
braking, preventing the wheels from locking up (ceasing
rotation) and avoiding uncontrolled skidding. It is an automated
system that uses the principles of threshold braking and
cadence braking which were practiced by skillful drivers with
previous generation braking systems. It does this at a much
faster rate and with better control than a driver could manage.
ABS generally offers improved vehicle control and decreases
stopping distances on dry and slippery surfaces for many
drivers; however, on loose surfaces like gravel or snow-covered
pavement, ABS can significantly increase braking distance,
although still improving vehicle control.
The anti-lock brake controller is also known as the CAB
(Controller Anti-lock Brake).Typically ABS includes a central
electronic control unit (ECU), four wheel speed sensors, and at
least two hydraulic valves within the brake hydraulics. The ECU
constantly monitors the rotational speed of each wheel; if it
detects a wheel rotating significantly slower than the others, a
condition indicative of impending wheel lock, it actuates the
valves to reduce hydraulic pressure to the brake at the affected
wheel, thus reducing the braking force on that wheel; the wheel
then turns faster. Conversely, if the ECU detects a wheel turning
significantly faster than the others, brake hydraulic pressure to
the wheel is increased so the braking force is reapplied, slowing
down the wheel. This process is repeated continuously and can
be detected by the driver via brake pedal pulsation. Some anti-

25. Automatic Transmission
An automatic transmission (also called automatic gearbox)is a
type of motor vehicle transmission that can automatically
change gear ratios as the vehicle moves, freeing the driver from
having to shift gears manually. Most automatic transmissions
have a defined set of gear ranges, often with a parking pawl
feature that locks the output shaft of the transmission stroke
face to keep the vehicle from rolling either forward or
backward.
7G Tronic Transmission

26. Automatic Transmission modes
Conventionally, in order to select the transmission operating
mode, the driver moves a selection lever located either on the
steering column or on the floor (as with a manual on the floor,
except that most automatic selectors on the floor do not move
in the same type of pattern as a manual lever; most automatic
levers only move vertically). In order to select modes, or to
manually select specific gear ratios, the driver must push a
button in (called the shift lock button) or pull the handle (only
on column mounted shifters) out. Some vehicles position
selector buttons for each mode on the cockpit instead, freeing
up spaceon the central console. Vehicles conforming to US
Government standards must have the modes ordered P-R-N-D-
L (left to right, top to bottom, or clockwise). Prior to this,
quadrant-selected automatic transmissions often used a P-N-D-
L-R layout, or similar. Such a pattern led to a number of deaths
and injuries owing to driver error causing unintentional gear
selection, as well as the danger of having a selector (when
worn) jump into Reverse from Low gear during engine braking
maneuvers.

27. Exhaust Gas Recirculation EGR
• It is a Nitrogen oxide emission reduction technique.
• It recirculates a part of exhaust gas to the intake manifold
• It is located between inlet and exhaust manifold.
• It provides passage for exhaust gases from exhaust to inlet
manifold.
Engine Control Unit (ECU):-
In automotive electronics, electronic control unit (ECU) is a
generic term for any embedded system that controls one or
more of the electrical system or subsystems in a motor vehicle.
Engine control unit (ECU) An engine control unit (ECU), now
called the powertrain control module (PCM), is a type of
electronic control unit that controls a series of actuators on an
internal combustion engine to ensure optimal engine
performance. It does this by reading values from a multitude of
sensors within the engine bay, interpreting the data using
multidimensional performance maps (called lookup tables), and
adjusting the engine actuators accordingly.
Working of ECU
• Control of Air/Fuel ratio
• Control of ignition timing

28. Steering System
Introduction
• The steering system is the collection of component and
linkages.
• It allows a vehicle to follow certain path desired by the
driver through the steering wheel.
Function
• It helps to turn the vehicle.
• It converts the rotary motion of the steering wheel into
angular turn of the respective wheels. It multiplies the
of the driver to turn the wheels.
Component
• Steering wheel
• Steering Shaft
• Steering Gearbox
• Tie Rod
• Tie Rod ends

29. Components of Steering System

30. Types of Steering System
• Hydraulic Power System
• Electric Power System

31. Chapter 2
Working In Workshop
How to read tyre size?

32. Brake Booster
A brake booster is an enhanced master cylinder setup used to
reduce the amount of pedal pressure needed for braking. It
employs a booster set up to act with the master cylinder to
give higher hydraulic pressure to the brakes and/or lower
force applied on the brake pedal through a brake booster
push- rod. The brake booster usually uses vacuum from the
engine intake to boost the force applied by the pedal onto the
master cylinder or may employ an extra vacuum pump to
enable it. Without the engine running the brake pedal feels
very hard and ineffective on the braking capability. An "active"
booster is a non "conventional" booster where a solenoid is
used to open the booster air valve to automatically push the
master cylinder forward to perform some forms of dynamic
stability control. Brake boosters come in either a single
diaphragm or tandem diaphragm (which is generally used for
bigger vehicles and trucks). They can be "cabin-breathers"
(taking clean filtered air from inside the cabin thus may be
noisier) or "engine-breathers" (less noisy but more at risk for
becoming clogged with mud/ice if not protected properly).
Apart from this additional booster setup, the braking system is
a normal hydraulic brake system.

33. Types of Filters
Engine Air Filter
There is an air filter in the engine that works to clean the air that
goes into the engine for combustion. Air filters are made of
different materials such as paper, foam, or sometimes even
cotton. The air filter cleans the air as it enters the engine to
remove any abrasive particles. This ensures that the combustion
occurs in the best possible conditions and it makes sure the fuel
efficiency of the vehicle remains where it should according to
the manufacturer.
Engine Oil Filter
As an engine runs, the metal wears down and tiny metal
particles release. These particles can block the flow and also
end up in the lubricant. The oil filter in your car catches these
particles that could potentially damage the engine. It is
important to change the oil filter according to the car
specifications to keep it working properly. This means about
every two years if you drive a new car and every year if you
have an older model.

34. Fuel Filter
The purpose of a fuel filter is to remove impurities from the
fuel before they get to the engine. This filter picks up and
contains any dirt that might harm the engine or keep it from
working properly. It is important to change the fuel filter
periodically since the dirt, and small particles can build up and
get stuck in the filter. If it clogged or dirty, it will reduce the
amount of fuel flowing to the engine and affect the fuel
economy and performance. Generally replaced after 30,000
km.
Cabin Air Filter
The cabin air filter catches dust particles and also pollen that
can float around the air outside the vehicle and prevents them
from entering the car. These filters are important for keeping
the air inside the car clean and breathable no matter what it is
like outside. It is a good idea to change the cabin filters about
once a year to ensure that they stay clean and keep filtering
out the particles.

35. Different types of Oils and its
Importance
Engine Oil
Motor oil, engine oil, or engine lubricant is any of various well-
developed lubricants (comprising oil enhanced with additives,
for example, in many cases, extreme pressure additives) that are
used for lubrication of internal combustion engines. The main
function of these lubricants is to reduce wear on moving parts;
they also clean, inhibit corrosion, improve sealing, and cool the
engine by carrying heat away from moving parts.
 Generally replaced after 1 year.
Transmission Oil
Automatic transmission fluid (ATF), also known as transmission
fluid or tranny fluid for short, is the fluid used in vehicles with
self-shifting or automatic transmissions. It is typically colored
red or green to distinguish it from motor oil and other fluids in
the vehicle. The fluid is optimized for the special requirements
of a transmission, such as valve operation, brake band friction
and the torque converter, as well as gear lubrication.
 Generally replaced after 45,000 km.
Brake Fluid
Brake fluid is a type of hydraulic fluid used in hydraulic brake
and hydraulic clutch applications in automobiles, motorcycles,
light trucks, and some bicycles. It is used to transfer force into
pressure, and to amplify braking force. It works because liquids
are not appreciably compressible. Most brake fluids used today
are glycol-ether based, but mineral oil and silicone-based fluids

36. Brake
A brake is a mechanical device which inhibits motion, slowing
or stopping a moving object or preventing its motion. Most
brakes commonly use friction between two surfaces pressed
together to convert the kinetic energy of the moving object
into heat, though other methods of energy conversion may be
employed. The brake disc (or rotor in American English) is
usually made of cast iron, but may in some cases be made of
composites such as reinforced carbon–carbon or ceramic
matrix composites. This is connected to the wheel and/or the
axle. To retard the wheel, friction material in the form of brake
pads, mounted on a device called a brake caliper, is forced
mechanically, hydraulically, pneumatically, or
electromagnetically against both sides of the disc. Friction
causes the disc and attached wheel to slow or stop.

37. Conclusion
It was great experience to work with highly trained
technicians at Mercedes-Benz service Center. For me this
training is quite fruitful. I got exposure of how to implement
theoretical knowledge in practical use. Get idea about
different mechanisms and electronics control used in modern
Hi-tech Mercedes car.
Reference
 Wikipedia: Mercedes-Benz India
 https://www.goodyearautoservice.com/en-US/tire-
basics/tire-size
 Wikipedia Tire CODE
 Wikipedia: Anti-lock braking system
 Wikipedia: Engine control unit
 https://www.cars.com/articles/2013/06/when-do-you-
need-a-wheel-alignment
 https://westautomotivegroup.com/5-benefits-getting-
wheel-alignment
 https://www.depaula.com/4-types-of-car-filters-and-their-
importance

https://www.mlchryslerdodgejeepramlexington.com/blogs/
1315/different-types-filters-vehicle
 http://www.mgmnoida.org/img/notice/me/576957Industria
l%20Training%20Sample%20Re port.pdf