SKM Motor Vehicle Mechanic Level 3 study plan

Explain, in writing, how the four-stroke cycle converts chemical energy to crankshaft torque, naming valve events and the role of camshaft timing.

Disassemble and reassemble a single-cylinder training engine, recording torque values and fastener sequences for cylinder head, main bearing caps, and connecting rod bolts.

Perform a cylinder leakage test and a dry/wet compression test, then state which result pattern points to rings, valves, or head gasket.

Interpret a timing belt/chain diagram and list the consequences of being one tooth off on crank versus cam.

Diagnose a no-start or rough-running condition using fuel pressure, injector pulse, and spark quality checks in a logical order.

Measure and judge wear on a cylinder bore, piston, and valve guide against a stated service limit and explain the rejection decision.

Describe the operation and testing of a turbocharger wastegate or a variable valve timing actuator, including the sensor inputs the ECM relies on.

Produce a cooling system pressure test record and identify the three most common causes of coolant loss with the test that separates them.

Measure brake pad and disc thickness, disc runout, and drum diameter, and compare each reading to specification.

Bleed a hydraulic brake system in the correct sequence and explain how ABS modulator valves change the bleeding procedure.

Inspect and diagnose steering play, tie rod ends, ball joints, and wheel bearings, distinguishing a worn component from an alignment symptom.

Explain the function of each suspension type (MacPherson strut, double wishbone, live axle) and the wear pattern each produces.

Diagnose an ABS warning light by reading fault codes and testing a wheel speed sensor circuit for resistance, signal, and air gap.

Remove, inspect, and refit a clutch assembly, measuring friction disc thickness and flywheel runout against specification.

Explain the power flow through a manual gearbox and an automatic planetary set, naming the holding devices in each gear.

Check and adjust automatic transmission fluid level and condition, and explain what burnt fluid or a delayed engagement indicates.

Use a multimeter and an oscilloscope to measure voltage drop, resistance, and a sensor waveform, and explain when each test is appropriate.

Trace a parasitic drain on a vehicle and isolate the circuit responsible using current measurement and fuse removal.

Diagnose a charging system fault by testing alternator output, ripple, and the battery with a conductance tester.

Apply lockout/tagout, PPE selection, and safe handling of high-voltage or airbag systems to two workshop scenarios, citing the control measure at each step.

Segregate workshop waste (used oil, coolant, batteries, refrigerant, solvent) and state the correct storage and disposal route for each.

Select and correctly use torque wrenches, micrometers, dial indicators, and pullers, and state the calibration check for each.

Perform an A/C system leak test, evacuate, and recharge by weight, recording pressures and ambient temperature.

Explain the refrigerant handling rules for recovery, recycling, and traceability, and identify the safety hazards of refrigerant contact and frostbite.

Diagnose a climate control fault where the compressor does not engage, checking refrigerant charge, pressure switch, and clutch circuit in order.

Describe the correct use and inspection of lifting equipment and jack stands before under-vehicle work.

Carry out a full pre-delivery or periodic inspection to a written checklist and justify every pass/fail line.

Write a job card and customer-facing explanation of a repair in plain language, separating what was found, what was done, and what is recommended.

Handle a simulated customer complaint about a repeat fault, applying a structured questioning and escalation approach.

Apply a final quality check (road test, torque audit, fluid levels, cleanliness) and document the sign-off.

Demonstrate a short practical instruction session to a junior colleague on one task, using a task breakdown and a competency check.

Explain how to supervise safe work, allocate jobs by competence, and record training evidence.

Complete a timed mixed-domain mock exam and review every wrong answer to its root cause.

Revisit the two weakest domains from the mock and complete targeted practice on each.