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AT 171 (4 credits)
Fuel and Emission Systems

The principles of fuel systems are studied. Fuel delivery
systems and fuel pump testing are covered. The history of
emissions control systems, from their inception up to the
present, is included. Control system theory and operating
principles are studied. Service and testing procedures are
demonstrated, and on-car tests are performed on all the
major emissions systems. The latest evaporative leak tester
smoke machines that use nitrogen is used for training.
Standard and feedback carburetor operating principles are
still briefly covered. Introduction to alternative fuels, electric,
and hybrid vehicles are presented. Highlights of the latest
Pennsylvania Emissions Testing procedures is featured, and
the groundwork of 5-gas diagnostic testing is laid.

AT 206 (3 credits)
Advanced Engine Diagnosis

Covers the use of the Vetronix MTS 5100/5200 Engine
Analyzer, Vacutec Leak Detector, and the Mustang Chassis
Dynomometer. Theory-related instruction is given on 5-gas
analysis and interpreting the results of the analyzer tests with
special emphasis on how they relate to advanced diagnosis
of ignition, carburetion, fuel injection, charging, cranking, and
engine and emission control systems. Demonstrations on
hookup and operation are followed by student practice on
shop vehicles, and when possible, by repair of client vehicles.
Prerequisite: AT 166

AT 211 (3 credits)
Advanced Chassis Service

The Hunter P611 four-wheel aligner featuring the DSP400
Series Sensors (cameras) and the DSP300 Series Sensors
are used in this course. Theory-related instruction is given
on alignment with special emphasis on 4-wheel alignment.
Disc and drum brake machining along with applying nondirectional finishes on the AMMCO brake lathe are covered.
On-the-car rotor truing is covered featuring the Pro-Cut PFM900 Smart Lathe. Demonstrations on hook-up and operation
are followed by student practice on shop vehicles, and when
possible, by repair of client vehicles.
Prerequisites: AT 116 and AT 156

AT 216 (3 credits)
Independent Diagnosis and Repair

Opportunity to diagnose and make repairs on client vehicles
in a simulated dealership atmosphere. Experience acting as
shop forepersons, using and writing repair orders, ordering
parts, and keeping track of hours on the job and using
materials. All repairs relate to the courses taken.

AT 222 (2 credits)
Pennsylvania Safety Inspection/Enhanced Emissions
Inspection Certification
Pennsylvania Department of Transportation Vehicle
Equipment and Inspection Regulation /Enhanced Emissions
Inspector manuals are covered, as per state requirements.
A demonstration of the proper procedure for performing a
safety inspection on a vehicle is given. Students practice on
shop vehicles. Each student is given the opportunity to take
the Pennsylvania Safety Inspection written and performance
tests along with the Enhanced Emissions written test and
computer-based training/tactile test. The Commonwealth,
upon satisfactory completion of these tests, will grant a
license for each.

AT 256 (2 credits)
Heating and Air Conditioning

Covers the theory of refrigeration and the operating principles
of manual and automatic temperature control systems, with
special emphasis on diagnosis, service, and repair. Refrigerant
recovery, recycling, identification, and recharging techniques
on R-12 and R-134a systems are covered in accordance with
federal law. The Sun Air-Kare charging station, Everco EREC
Recovery/Recycle station, and the Robinair Enivro Charge
Combination are featured. Demonstrations given on hookup, operation, and servicing, followed by student practice on
shop vehicles, training aids (clutch and seal replacement)
and repair of client vehicles.

AT 261 (3 credits)
Drive Train and Manual Transaxle Service

Basic operating principles of manual transaxles, differentials,
clutches, and universal joints. C-V joints, drive axles,
and drive shafts, along with diagnosis and basic service
techniques. Demonstrations given on differential set-up,
replacing universal and C-V joints, also clutch replacement
and adjustment. Students practice disassembly, precision
measurements, adjustments and assembly techniques on
training aids and work on client vehicles when possible.

AT 266 (3 credits)
Advanced Engine Computer Control Analysis

Sensor-related theory, testing procedures, and waveform
analysis are studied. OBD-II theory and the related testing
procedures are covered. How to use shop manuals to follow
manufacturers' procedures for troubleshooting engine
drivability problems on computer-controlled cars, along
with lab scopes (Fluke 98 Series II), break out boxes, and the
Master Tech 3100 hand-held scanner are used to recover
trouble codes from the computer's memory and reading
sensor stream data. Emphasis is placed on the diagnosis and
the interpretation of the results. Students practice on shop
vehicles and repair client vehicles when possible.

AT 271 (4 credits)
Automatic Transaxle Service

Basic principles of automatic transmissions, including lockup torque converters, diagnosis, and basic service techniques.
Chrysler 40TE electronic transaxle theory is covered.
Demonstrations given on pressure checks and shift points,
using gauges and a chassis dynamometer. Students practice
disassembly, precision measurements, testing, adjustments,
and assembly techniques on training aids. Where possible,
repair on client vehicles is included.

AT 276 (3 credits)
Fuel Injection Systems

The basic operating principles of the Bosch mechanical
fuel injection system along with Chrysler and G.M. throttle
body and port systems are covered in this course. Special
emphasis is placed on diagnosis and service techniques.
The EMI-TECH fuel system analyzer is featured. Cleaning a
fuel injection system on the vehicle is covered featuring the
Bilstein EFI-800 fuel system service center. Students practice
on shop vehicles and work on client vehicles when possible.
Prerequisite: AT 171

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