A final presentation for Industrial Maintenance during my Master studies. We had to present a maintenance report for semi-trailer trucks. We had to work in a team to analyze all the aspects required for maintaining a semi-trailer.

1. INDUSTRIAL MAINTENANCE
Presented By
Valentas Gružauskas
Algirdas Sriubas
Dalia Olenceviciute
Vignesh Gopal Raja
Jobi Paulose Chirangara
GROUP MDM-4/8
MAINTENANCE OF SEMI-TRAILERTRUCK

2. TEAM LINE
Work done by the team
Brake maintenance, Schedule for
Brake maintenance
Algirdas Sriubas
Product Description,Requirement
norms, Braking system, Tires and
suspension
Valentas Gružauskas
Refrigerator unit, Norms and
regulation for refrigeration
Dalia Olenceviciute
Cleaning and drying, Load
Securing system, Equipment
Maintenance Schedule
Vignesh Gopal Raja
Trailer Connection types,
Common reliability problems,
Maintenance of connectors
Jobi Paulose Chirangara

3. PRODUCT DESCRIPTION
A refrigerator truck is a van or truck designed to carry
perishable freight at specific temperatures. Usually they
are using a semi-trailer. A semi-trailer is a trailer without
a front axle.

4. Transport temperature requirements of food products
Chilled products Temperature (°C)
Fresh fish (in ice), crustaceans and shellfish (excluding live ones) +2
Cooked dishes and prepared foods, pastry creams, fresh pastries,
sweet dishes and egg products
+3
Meat and cooked meats pre-packaged for consumer use +3
Offal +3
Poultry, rabbit and game +4
Non-sterilized, untreated, unpasteurised or fermented milk, fresh
cream, cottage cheese and curd
+3
Milk for industrial processing +6
Cooked meats other than those which have been salted, smoked,
dried or sterilized
+6
Frozen products Temperature (°C)
Ice and ice cream -25
Deep frozen foods -18
Fishery products -18
Butter and edible fats, including cream to be used for butter making -14
Egg products, offal, rabbit, poultry and game -12
Meat -10

5. Refrigerator Unit Flexible partition
Double Decker
Thermogram
Load Securing
STRUCTURE OF
THE SEMI-TRAILER

6. OTHER EQUIPMENT
MEAT
HOOKS
FLEXIBLE
WALLS
THERMOGRA
M
REFRIGIRATOR
UNIT

7. BRAKE SYSTEM
An air brake or, more formally, a compressed
air brake system, is a type of friction brake for
vehicles in which compressed air pressing on
a piston is used to apply the pressure to
the brake pad needed to stop the vehicle.

8. CHASSIS

10. TIRES
TIRE IS A MAJOR FACTORTO BE
CONSIDERED
“
”
Air level is one of
the key factor
Rubber quality
should be
checked
Width of the tire
must meet the
requirements

11. WHY ISTRAILER MAINTENANCE IMPORTANT ?

12. BRAKE MAINTENANCE
Keep the air system tight. The air system cannot be charged
properly if there are leaks in reservoirs, lines, hoses, or
valves. Always check the tractor pressure gauge for unusual
drops or extended buildup times. Run the tractor engine
until the air brake system pressure gauge shows at least
105 psi. Check the brake pads if you hear screeching noises
when you hit the brakes pedal and change them if needed.

13. UNDER INFLATION is a tire’s greatest enemy. Check tires with an
accurate gauge before each trip and at least once a week.
Check all metal surfaces thoroughly, including area between duals
and on inboard side of wheel.
MAINTENANCEOFTIRES

14. Every commercial motor vehicle must be inspected as required by
regulations.
Except as provided in § 396.23 and this paragraph, motor carriers
must inspect or cause to be inspected all motor vehicles subject to
their control.
A motor carrier must pass an inspection in accordance with the terms
of this section at least once during the preceding 12 months and
documentation of such inspection is on the vehicle.
PERIODIC INSPECTION

15. Service &
mileage
10k 20k 30k 40k 50k 60k 70k 80k 90k 100k
Fuel system
treatment
x x x x x x x x x x
Spark plugs
treatment
x x
Timing belt & water
pomp replacement
x
Automatic/manual
transimission
system service
x x
Power steering
service
x x
Battery/charging
system service
x x x x x
Tire wear inspection x x x x x x x x x x
Time – based service 2 years 4 years 6 years
Brake fluid service x
Cooling system service x
Systems and starter battery
replacement
x
Main task of maintenance is to ensure that all vehicles systems will perform correctly
and during exploitation period will not happen any failures. Depending from type of
maintenance it has to be done daily, monthly, annually etc
MAINTENANCE SCHEDULE

16. EQUIPMENT FOR MAINTENANCE
There are things that you can maintain by yourself having
some basic equipment, but sometimes it is necessary to
use special trucks maintenance services.

17. TYPES OF REFRIGERATED UNIT
Anhydrous ammonia is used frequently, and it is often the type of
coolant in most industrial refrigeration units.
Carbon dioxide was once the only form of industrial refrigeration.
Propane refrigeration units tend to be found mostly in refineries.

18. STRUCTURE OF MECHANICAL REFRIGERATOR
EVAPORATOR, COMPRESSOR, CONDENSER, EXPANSIONVALVE
The refrigeration system on a semi-trailer is typically
driven by a diesel engine.“
”

19. Refrigerator unit VECTOR 1350

20. REFRIGERATOR UNIT SUPRA 1250

21. TEMPERATURE CONTROL
Semi-trailer-refrigerators are supplied with
thermographs that allow to control the
temperature of transported cargo
during transportation.Temperature recorder
could be used for the same purpose.

23. Checklist/Hours 1500 hours 3000 hours 4500 hours 6000 hours
Compressor drive coupling
Air switch and calibrate
Evaporator coil
Compressor oil level
Refrigerant level (cool cycle)
Operating refrigerant pressure
Perform Quick-Check procedure
Perform Pre-Trip inspection
Defrost water drains
Auto Start/Stop operation
Quench valve operation
Manual defrost operation

24. REQUIREMENTS
Maintaining refrigerated foods at 45 deg. F (7.2 deg. C) or below as
appropriate for the particular food involved.
Measures such as sterilizing, irradiating, pasteurizing, freezing,
refrigerating, controlling pH or controlling aw that are taken to
destroy or prevent the growth of undesirable micro-organisms
[Code of Federal Regulations]
[Title 21, Volume 2]
[Revised as of April 1, 2014]
[CITE: 21CFR110.80]

25. REQUIREMENTS
The Commission report of 26 September 2011 on the application, effects and adequacy of
Regulation (EC) No 842/2006 of the European Parliament and of the Council (4) concluded that
the current containment measures, if fully applied, have the potential to reduce emissions of
fluorinated greenhouse gases.Those measures should therefore be maintained and clarified on
the basis of the experience gained in implementing them. Certain measures should also be
extended to other appliances in which substantial quantities of fluorinated greenhouse gases are
used, such as refrigerated trucks and trailers.
Commission Regulation (EC)No 303/2008 of 2 April 2008 establishing, pursuant to Regulation (EC)
No 842/2006 of the European Parliament and of the Council, minimum requirements and the
conditions for mutual recognition for the certification of companies and personnel as regards
stationary refrigeration, air conditioning and heat pump equipment containing certain fluorinated
greenhouse gases.

26. CHANGES
Equipment with more than 3kg but less than 5 tons CO2-eq of refrigerant will no longer have to be
leak checked from 1st January 2015
Equipment with less than 3kg but more than 5 tons CO2-eq of refrigerant, will not have to be leak
checked until 1st January 2017 (when the grace period comes to an end)
For any type of equipment with at least 3kg of refrigerant, the new thresholds will apply from 1st
January 2015.
Leak checks remain based on the same frequency as provided by Regulation (EC) 842/2006.
The table below summarizes the situation.

27. CLEANING
PROCESS
01
02
03
04
CLEANING
WASHING
DRYING
DISINFECTING
Today's new trailers have been designed
with better insight into higher biosecurity
demands. Many of our high-health herds
are using thermally assisted drying and
decontamination (TADD) systems.
POLISHING
Cleaning and disinfecting are critical parts of
all biosecurity programs.The goal is not to
completely sterilize the environment, but
rather to decrease the pathogen load
significantly to a point where disease
transmission does not occur.There are
many important steps to any cleaning and
disinfecting process.Those steps and some
important concepts will be identified here

29. LOAD SECURITY
To prevent damage for goods
If the goods are not packed tight they
might be damaged
Due to friction there will be high pressure on
the goods to slide
Acceleration
Friction Factors01
02
Safety Factors
Test Methods
The lashes are the safety equipment to hold the
Goods in the same place
Once these methods are checked they are tested
before they are used for logistics
03
04

30. LOAD SECURING EQUIPMENT
All equipment used for securing loads
should be regularly inspected for wear
or damage. Inspection and
maintenance arrangements should be
in accordance with the manufacturers’
instructions. Special attention should
be paid to webbing and rope to ensure
that there are no major visible defects,
such as fraying of the strands. They
should also be inspected to ensure
that they have not been otherwise
contaminated, cut or damaged
through misuse. Consult the lashing
manufacturer or suppliers if there is
any doubt as to whether repairs are
required. Equipment made of steel
should not be used if any part has got
a permanent deformation such as a
bent link on a chain or a bent part on
the tensioner for a web lashing.

31. LOCKING SYSTEM
Twist locks should be regularly inspected for wear, damage
and operation defects. Locking devices intended to prevent
operating levers from moving during the journey should be
given special attention.

32. PERIODIC MAINTENANCE SCHEDULE
SERVICE ITEM After 50 Km After 2000Km After 5000 Km
Every
10000Km /
Two Months
After 6
months
After 6 Years
Wheels Nuts
Brake System
Threaded
connection
King Pin
lubricate
King-Pin
Check Bolts
Servicing
steered axel
First repeat
inspection for
ATP approval

33. SERVICE ITEM
Every 5000Km
or
Every 2 weeks
Every 10000km
Or
Every month
Every 30000Km
Or
Every 3 months
Every 60000Km
Or
Every 6 months
Every 120000Km
Or
Every 12 months
Axel and wheels
bakes
Wheel Nuts
King-Pin Lubricate
Lighting Systems
Tires
Compressed air
system
Shock Absorber
Skid Plate
Front landing leg

34. THESE COMPANIES ARE NUMBER ONE
SERVICE CENTERS FOR SEMI-TRAILER
TRUCKS ”
“
OUTSOURCING SERVICES

35. THANK YOU