Podcast
Questions and Answers
What is CanBus?
What is CanBus?
- Emissions control system
- Electrical system on machines connecting multiple controllers (correct)
- A component for remotely monitoring machines via GPS
- Type of vehicle
Which safety alert indicates IMMEDIATE hazards that, if not avoided, will result in death or serious injury?
Which safety alert indicates IMMEDIATE hazards that, if not avoided, will result in death or serious injury?
- Alert
- Caution
- Warning
- Danger (correct)
What is the PRIMARY use of a wheel loader?
What is the PRIMARY use of a wheel loader?
- Crown a road
- Dig trenches
- Cut slopes
- Remove/Move material (correct)
In an electrical schematic, what does the symbol of a line with a ground symbol represent?
In an electrical schematic, what does the symbol of a line with a ground symbol represent?
What is the normal percentage of coolant to water in the cooling system?
What is the normal percentage of coolant to water in the cooling system?
What machine has a front mounted blade, tracks, and a huge ripper?
What machine has a front mounted blade, tracks, and a huge ripper?
What creates combustion in a diesel engine?
What creates combustion in a diesel engine?
What is the basic use of a roller or compactor?
What is the basic use of a roller or compactor?
When lubricating a U-joint, what does it mean if fresh lube can be seen at all bearing seals?
When lubricating a U-joint, what does it mean if fresh lube can be seen at all bearing seals?
Fire extinguishers extinguish fires by removing which requirement?
Fire extinguishers extinguish fires by removing which requirement?
What problem causes low fluid in a maintenance-free battery?
What problem causes low fluid in a maintenance-free battery?
What creates pressure in a hydraulic system?
What creates pressure in a hydraulic system?
In Ohms Law (V=IR), what does the R stand for?
In Ohms Law (V=IR), what does the R stand for?
What attachment works in conjunction with the bucket and performs work similar to a grapple?
What attachment works in conjunction with the bucket and performs work similar to a grapple?
When should the Fuel Water separator be drained?
When should the Fuel Water separator be drained?
Which is NOT a reason for a poor starter ground?
Which is NOT a reason for a poor starter ground?
What type of engine does a crawler-type front-end loader usually have?
What type of engine does a crawler-type front-end loader usually have?
What does a tachometer indicate?
What does a tachometer indicate?
What condition could NOT cause engine vibration?
What condition could NOT cause engine vibration?
On a hydraulic brake system, Technician A says excessive brake pedal travel can be caused by a leaking check valve. Technician B says excessive brake pedal travel can be caused by an improperly adjusted master cylinder push rod. Who is correct?
On a hydraulic brake system, Technician A says excessive brake pedal travel can be caused by a leaking check valve. Technician B says excessive brake pedal travel can be caused by an improperly adjusted master cylinder push rod. Who is correct?
What needs to be removed to check a diesel engine's compression?
What needs to be removed to check a diesel engine's compression?
What is the most appropriate method to check for leaks in a hydraulic system?
What is the most appropriate method to check for leaks in a hydraulic system?
What is the BEST method of repairing a broken wire?
What is the BEST method of repairing a broken wire?
What equipment commonly uses a scarifier?
What equipment commonly uses a scarifier?
What is telematics?
What is telematics?
What is the purpose of the lockout/tagout procedure in heavy equipment maintenance?
What is the purpose of the lockout/tagout procedure in heavy equipment maintenance?
Which of the following symptoms is indicative of a malfunctioning turbocharger in a heavy equipment diesel engine?
Which of the following symptoms is indicative of a malfunctioning turbocharger in a heavy equipment diesel engine?
In a modern heavy equipment engine, which type of sensor is primarily responsible for measuring the amount of air entering the engine?
In a modern heavy equipment engine, which type of sensor is primarily responsible for measuring the amount of air entering the engine?
Which ohmmeter reading indicates an open injector winding?
Which ohmmeter reading indicates an open injector winding?
In the context of electronic control systems in heavy equipment, what does the term "CAN bus" refer to?
In the context of electronic control systems in heavy equipment, what does the term "CAN bus" refer to?
Which of the following is a common cause of hydraulic system cavitation in heavy equipment?
Which of the following is a common cause of hydraulic system cavitation in heavy equipment?
What is the purpose of a centrifugal governor in a diesel engine?
What is the purpose of a centrifugal governor in a diesel engine?
What is the recommended method for recalibrating a load-sensing hydraulic system?
What is the recommended method for recalibrating a load-sensing hydraulic system?
What is the primary function of a heavy equipment hydraulic accumulator?
What is the primary function of a heavy equipment hydraulic accumulator?
When diagnosing hydraulic system issues, what does a drop in pressure during operation typically indicate?
When diagnosing hydraulic system issues, what does a drop in pressure during operation typically indicate?
When performing a load test on an alternator, which parameter is crucial to monitor to ensure proper operation?
When performing a load test on an alternator, which parameter is crucial to monitor to ensure proper operation?
Flashcards
CanBus
CanBus
Electrical system on machines connecting multiple controllers.
Immediate hazard safety alert
Immediate hazard safety alert
A danger indication that can lead to death or severe injury.
Primary use of a wheel loader
Primary use of a wheel loader
To remove or move material efficiently.
Electrical schematic symbol
Electrical schematic symbol
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Coolant to water ratio
Coolant to water ratio
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Machine with front blade and tracks
Machine with front blade and tracks
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Combustion in a diesel engine
Combustion in a diesel engine
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Basic use of a roller or compactor
Basic use of a roller or compactor
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Fresh lube at bearing seals
Fresh lube at bearing seals
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Fire extinguishers remove
Fire extinguishers remove
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Low fluid in maintenance-free battery
Low fluid in maintenance-free battery
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Pressure in hydraulic system
Pressure in hydraulic system
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Ohm's Law (V=IR) R
Ohm's Law (V=IR) R
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Attachment working with bucket
Attachment working with bucket
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Fuel Water separator draining
Fuel Water separator draining
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Poor starter ground causes
Poor starter ground causes
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Crawler-type front-end loader engine
Crawler-type front-end loader engine
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Tachometer function
Tachometer function
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Engine vibration causes
Engine vibration causes
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Excessive brake pedal travel cause
Excessive brake pedal travel cause
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Checking diesel engine compression
Checking diesel engine compression
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Method for checking hydraulic leaks
Method for checking hydraulic leaks
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Repairing a broken wire
Repairing a broken wire
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Scarifier use
Scarifier use
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Telematics definition
Telematics definition
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Lockout/tagout procedure purpose
Lockout/tagout procedure purpose
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Malfunctioning turbocharger symptom
Malfunctioning turbocharger symptom
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Modern engine air sensor
Modern engine air sensor
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Open injector winding reading
Open injector winding reading
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CAN bus in electronic systems
CAN bus in electronic systems
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Hydraulic system cavitation cause
Hydraulic system cavitation cause
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Centrifugal governor function
Centrifugal governor function
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Recalibrating hydraulic systems
Recalibrating hydraulic systems
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Hydraulic accumulator function
Hydraulic accumulator function
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Pressure drop indication
Pressure drop indication
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Alternator load test parameter
Alternator load test parameter
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Study Notes
Skills Test Questions and Answers
- CanBus: A component for remotely monitoring machines via GPS, connecting multiple controllers within the electrical system of a vehicle.
- Type of Vehicle: Not specified, but part of the skills test.
- Emissions Control System: Part of the skills test.
- Immediate Hazard Alert: "Danger" indicates immediate hazards that, if not avoided, can result in serious injury or fatality.
- Wheel Loader Primary Use: Removing and moving material.
- Electrical Schematic Symbol: Ground.
- Coolant/Water Ratio: 60% coolant to 40% water in a cooling system.
- Front Mounted Blade, Tracks, Huge Ripper Machine: A dozer.
- Diesel Engine Combustion: Spark plugs.
- Roller/Compactor Basic Use: Compressing and smoothing asphalt.
- U-Joint Lubrication: A U-joint lube showing at all bearing seals indicates it has been properly lubricated.
- Fire Extinguisher Requirement: Oxygen needs to be removed to extinguish a fire.
- Low Fluid in Maintenance-Free Battery: Low voltage.
- Hydraulic System Pressure: A restriction within the system (relief valve setting).
- Ohms Law (V=IR): The letter R stands for Resistance.
- Bucket Attachment: A ripper attachment is similar to a grapple bucket.
- Fuel Water Separator Drain Time: Not specified in the OCR text.
- Poor Starter Ground Reasons: Missing engine-to-frame ground strap, missing starter ground strap, loose mounting bolts, corroded cab mounts.
- Crawler-Type Loader Engine: Diesel.
- Tachometer Indication: Hours of operation.
- Engine Vibration Cause (can't cause): Bent crankshaft.
- Loose Power Steering Pump Cause: Leaking check valve, improper adjustment of the master cylinder push rod.
- Diesel Engine Compression Check: Spark plugs need to be removed.
- Hydraulic System Leak Check: A visual inspection, feeling for wet areas, listening for unusual noises, and checking hydraulic fluid color.
- Repairing a Broken Wire: Use a crimped butt connector.
- Equipment Using Scarifier: Excavator, Motor Grader, Roller/Compactor, Tandem Scraper.
- Telematics: Remotely monitoring machines via GPS signals, a system to view fault codes, and a screen for operators to see those codes.
- Lockout/Tagout Purpose: Ensuring all tools are accounted for, preventing unauthorized equipment use, isolating energy sources, and preventing accidental machine start-ups.
- Turbocharger Malfunction Indicators: Increased fuel consumption.
- Air Entering Engine Sensor: Mass Air Flow (MAF) sensor.
- Open Injector Winding Ohmmeter Reading: 0 ohms.
- CAN Bus Description: A computer network for communication between control modules in heavy equipment.
- Hydraulic System Cavitation Cause: Overfilled hydraulic reservoir.
- Centrifugal Governor Function (in diesel engine): Regulates fuel injection timing.
- Recalibrating Load-Sensing Hydraulic System: Using a diagnostic tool to reset calibration settings.
- Hydraulic Accumulator Function: Stores hydraulic fluid for emergency use.
- Hydraulic Pressure Drop: Air in the hydraulic lines.
- Alternator Load Test Crucial Parameter: Charging current.
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