Year 2 Exam Study Guide — master what the exam actually tests, concept by concept.
Heavy equipment and vehicles are governed by federal and provincial regulations covering emissions, safety systems, weights and dimensions, and operator certification. Knowing these standards protects you legally and ensures the machines you service are roadworthy and safe.
EGR: reduces peak combustion temperature, lowers NOx; common on newer diesels. On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
Regen: burns accumulated soot at high temp; automatic or manual intervention needed. On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
Engine displacement, gear ratios, hydraulic pressure, electrical resistance, and fuel delivery rates all require calculation. These questions test your mechanical math: knowing which formula to apply, what units to use, and how to check your work.
AMT: computer shifts, clutch actuated electronically; parameter settings required for proper operation. On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
Diagnostic and repair procedures are systematic — skip a step and you'll miss the root cause. This section covers the proper approach to vehicle diagnosis, the sequence of mechanical repairs, and the testing methods that confirm a fix actually fixed the problem.
Balance valve: maintains ratio; prevents jackknife (rear lock) or front lock-up (no steering). On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
Fifth wheel: excessive play = safety issue; must adjust/replace if limits exceeded. Memorize this formula and practise substituting values — exam questions often give you three variables and ask you to solve for the fourth.
excessive play = safety issue
All 5 exam concepts from this guide — test your recall before you sit the exam.