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Alberta Heavy Equipment Technician First Period AIT
Exam Questions with Correct Answers and explanations
LATEST THIS YEAR -JUST RELEASED
Alberta Heavy Equipment Technician First Period AIT Exam
Exam Coverage Summary
The Alberta Heavy Equipment Technician (HET) First Period technical training covers
foundational knowledge required for apprenticeship . Key subject areas include: Standard
Workplace Safety, Materials, and Tools (safety legislation, rigging, hazardous materials,
hand/power tools, measuring tools, oxyacetylene equipment); Suspensions, Wheels, and
Systems (frame/suspension fundamentals and service, bearings/seals, wheels/tires/hubs, trailer
systems, coupling units, landing gear, preventive maintenance); Hydraulics I and Hydraulic
Brake Systems (hydraulic fundamentals, pumps/valves/cylinders, hydraulic brake systems,
parking/electric brakes); Electrical I & Electronics I (electrical theory, circuits, magnetism, test
equipment, batteries, wiring, basic electronics); and Air Brakes (system fundamentals,
mechanical components, truck/trailer systems, testing/service, ABS) . Students must achieve a
minimum cumulative weighted average of 65% across courses, with no course mark below 50%,
and must attain a 65% passing mark on the final exam (70% if challenging) to successfully
complete the period .
Question 1
A heavy equipment technician is servicing a final drive on a track-type tractor. Which type of
bearing is most commonly used to support the high radial loads and moderate thrust loads in
this application?
A) Needle bearing
B) Deep groove ball bearing
C) Straight roller bearing
D) Tapered roller bearing
Correct Answer: D
Summary Rationale: Tapered roller bearings are designed to handle high radial loads and thrust
loads simultaneously, making them ideal for final drives where both forces are present.
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Question 2
An excavator's swing bearing (slew ring) is being inspected for wear. What is the primary
indicator that the bearing requires replacement?
A) Surface rust on the bearing housing
B) Axial play or excessive radial movement measured with a dial indicator
C) Slight discoloration of the bearing grease
D) Noise only during cold operation
Correct Answer: B
Summary Rationale: Excessive axial or radial play measured with a dial indicator indicates wear
beyond specifications and requires replacement of the slew ring.
Question 3
A technician is removing a press-fit bearing from a shaft using a bearing splitter and a hydraulic
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press. What is the correct procedure to prevent damage to the shaft?
A) Apply force to the bearing's inner race only
B) Apply force to the bearing's outer race only
C) Apply force evenly to both races simultaneously
D) Apply force to the shaft end only
Correct Answer: A
Summary Rationale: Pressing on the inner race transfers force directly to the interference fit
between the inner race and shaft, allowing the bearing to slide off without damaging the shaft.
Question 4
What is the function of a bearing's "contact angle" in angular contact ball bearings?
A) It determines the bearing's maximum rotational speed
B) It indicates the direction of the bearing's load-carrying capacity
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C) It measures the bearing's internal clearance
D) It determines the bearing's lubrication requirements
Correct Answer: B
Summary Rationale: The contact angle determines the direction and magnitude of the bearing's
load-carrying capacity. Larger angles support more thrust, smaller angles more radial.
Question 5
A technician is packing a wheel bearing with grease. Which method ensures proper lubrication
without damaging the bearing?
A) Filling the bearing cavity completely with grease
B) Applying grease to the outer surface only
C) Using a bearing packer to force grease between the rollers and cage
D) Submerging the bearing in an oil bath
Alberta Heavy Equipment Technician First Period AIT
Exam Questions with Correct Answers and explanations
LATEST THIS YEAR -JUST RELEASED
Alberta Heavy Equipment Technician First Period AIT Exam
Exam Coverage Summary
The Alberta Heavy Equipment Technician (HET) First Period technical training covers
foundational knowledge required for apprenticeship . Key subject areas include: Standard
Workplace Safety, Materials, and Tools (safety legislation, rigging, hazardous materials,
hand/power tools, measuring tools, oxyacetylene equipment); Suspensions, Wheels, and
Systems (frame/suspension fundamentals and service, bearings/seals, wheels/tires/hubs, trailer
systems, coupling units, landing gear, preventive maintenance); Hydraulics I and Hydraulic
Brake Systems (hydraulic fundamentals, pumps/valves/cylinders, hydraulic brake systems,
parking/electric brakes); Electrical I & Electronics I (electrical theory, circuits, magnetism, test
equipment, batteries, wiring, basic electronics); and Air Brakes (system fundamentals,
mechanical components, truck/trailer systems, testing/service, ABS) . Students must achieve a
minimum cumulative weighted average of 65% across courses, with no course mark below 50%,
and must attain a 65% passing mark on the final exam (70% if challenging) to successfully
complete the period .
Question 1
A heavy equipment technician is servicing a final drive on a track-type tractor. Which type of
bearing is most commonly used to support the high radial loads and moderate thrust loads in
this application?
A) Needle bearing
B) Deep groove ball bearing
C) Straight roller bearing
D) Tapered roller bearing
Correct Answer: D
Summary Rationale: Tapered roller bearings are designed to handle high radial loads and thrust
loads simultaneously, making them ideal for final drives where both forces are present.
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Question 2
An excavator's swing bearing (slew ring) is being inspected for wear. What is the primary
indicator that the bearing requires replacement?
A) Surface rust on the bearing housing
B) Axial play or excessive radial movement measured with a dial indicator
C) Slight discoloration of the bearing grease
D) Noise only during cold operation
Correct Answer: B
Summary Rationale: Excessive axial or radial play measured with a dial indicator indicates wear
beyond specifications and requires replacement of the slew ring.
Question 3
A technician is removing a press-fit bearing from a shaft using a bearing splitter and a hydraulic
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press. What is the correct procedure to prevent damage to the shaft?
A) Apply force to the bearing's inner race only
B) Apply force to the bearing's outer race only
C) Apply force evenly to both races simultaneously
D) Apply force to the shaft end only
Correct Answer: A
Summary Rationale: Pressing on the inner race transfers force directly to the interference fit
between the inner race and shaft, allowing the bearing to slide off without damaging the shaft.
Question 4
What is the function of a bearing's "contact angle" in angular contact ball bearings?
A) It determines the bearing's maximum rotational speed
B) It indicates the direction of the bearing's load-carrying capacity
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C) It measures the bearing's internal clearance
D) It determines the bearing's lubrication requirements
Correct Answer: B
Summary Rationale: The contact angle determines the direction and magnitude of the bearing's
load-carrying capacity. Larger angles support more thrust, smaller angles more radial.
Question 5
A technician is packing a wheel bearing with grease. Which method ensures proper lubrication
without damaging the bearing?
A) Filling the bearing cavity completely with grease
B) Applying grease to the outer surface only
C) Using a bearing packer to force grease between the rollers and cage
D) Submerging the bearing in an oil bath
