310T Study Guide 2026

Everything you need to pass the 310T exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.

📋 310T Exam Format at a Glance

135

Questions

240 min

Time Limit

70%

Passing Score

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📚 310T Topics to Study (51)

Air Brakes and Braking Systems · 7 cards Air Brakes and Braking Systems · 7 cards Air Brakes and Braking Systems · 7 cards Air Brakes and Braking Systems · 7 cards Air Brake Systems Diagnosis · 7 cards Air Brake Systems Diagnosis · 7 cards Air Brake Systems Diagnosis · 7 cards Air Brake Systems Diagnosis · 7 cards Career Opportunities and Advancements · 7 cards Career Opportunities and Advancements · 7 cards Career Opportunities and Advancements · 7 cards Career Opportunities and Advancements · 7 cards Credential Requirements · 7 cards Credential Requirements · 7 cards Credential Requirements · 7 cards Credential Requirements · 7 cards Drivetrain and Transmission · 7 cards Drivetrain and Transmission · 7 cards Drivetrain and Transmission · 7 cards Drivetrain and Transmission · 7 cards Drive Train Systems · 7 cards Drive Train Systems · 7 cards Drive Train Systems · 7 cards Drive Train Systems · 7 cards Evaluation and Testing Process · 7 cards Evaluation and Testing Process · 7 cards Evaluation and Testing Process · 7 cards Evaluation and Testing Process · 7 cards Practical Skills and Training · 7 cards Practical Skills and Training · 7 cards

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✍️ Sample 310T Questions & Answers

1. A Class 8 truck exhibits a harsh 1-2 upshift in an Allison automatic transmission. What is the MOST likely cause?

✓ Faulty turbine speed sensor

A faulty turbine speed sensor provides incorrect shaft speed data, causing the TCM to miscalculate shift timing and produce harsh upshifts.

2. What is a common cause of brake chamber pushrod stroke being TOO SHORT (under-travel)?

✓ Slack adjuster adjusted too tightly (over-adjusted)

Over-adjustment of the slack adjuster brings the lining too close to the drum, shortening stroke but also risking brake drag and heat buildup.

3. What is the purpose of the walk-around inspection portion of a commercial vehicle preventive maintenance check?

✓ To systematically inspect the vehicle's exterior, tires, lights, and visible undercarriage components

A structured walk-around ensures that exterior body, tires, lights, and undercarriage items visible during the circuit are checked in a consistent, repeatable sequence.

4. In a dual-circuit air brake system, which reservoir is pressurized first by the compressor?

✓ Wet (supply) tank

Air from the compressor flows first into the wet (supply) tank where moisture collects, then through check valves into the primary and secondary circuit reservoirs.

5. During a brake balance test, the rear axle brakes grab harder than the front axle brakes. The FIRST area to inspect is:

✓ Proportioning/limiting valve operation on the front circuit

A malfunctioning front-axle limiting or proportioning valve reduces delivered pressure to the front brakes, creating a front-to-rear imbalance.

6. A coach automatic transmission has a fault code for an open circuit on the turbine speed sensor. Without a turbine speed signal, the transmission control module will MOST likely:

✓ Default to a limp-home mode, limiting available gear ratios

Most TCMs enter a limp-home strategy when a critical speed sensor is lost, limiting shifts to protect the transmission and allow the vehicle to reach a service location.

🎯 Free 310T Practice Tests

Air Brakes and Braking Systems · 7 questions Air Brakes and Braking Systems · 7 questions Preventive Maintenance and Inspection · 7 questions Preventive Maintenance and Inspection · 7 questions Preventive Maintenance and Inspection · 7 questions Practical Skills and Training · 7 questions Practical Skills and Training · 7 questions Practical Skills and Training · 7 questions Practical Skills and Training · 7 questions Air Brakes and Braking Systems · 7 questions

📖 310T Guides & Articles

Your 310T Study Path

1. Learn with Flashcards → 2. Drill Practice Tests → 3. Take the Full Exam Simulation

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