Lesson 1Common heavy machine diesel setups (straight, V, turbocharged)Looks at usual heavy machine diesel arrangements and features. Compares straight and V engines, turbocharged and natural breathing setups, and how design impacts fitting, service reach, and output.
Straight versus V engine buildTurbocharged vs natural breathing dieselsWet and dry sleeve block buildingOverhead cam vs cam-in-block designsPower strength and torque line featuresService reach and fitting worriesLesson 2Fuel system parts: tanks, filters, lift pumps, injection pumps, injectorsDeals with diesel fuel keeping and sending from tank to injector. Explains part roles, flow routes, pressure levels, and cleaning, plus usual wear, dirt problems, fault checks, and safe service steps.
Tank design and air release in heavy machinesLift pumps and low-pressure fuel linesFilter kinds, levels, and water splittingHigh-pressure injection pumps and handlingInjector kinds, spray shapes, and wearFuel dirt reasons and fault-findingLesson 3Lubrication system: oil kinds, filters, oil paths, pressure systems, dirt signsCovers lubrication system plan from oil pan to bearings. Explains oil types, additives, filters, paths, and pressure handling, plus dirt sources, sampling, wear signs, and service times for heavy machines.
Engine oil types and service levelsOil pump kinds and pressure handlingMain paths, jets, and lube routesFilter materials, bypass valves, and serviceDirt sources and oil samplingLow oil pressure and noise fault-findingLesson 4Air intake and turbocharging: filters, intercoolers, turbocharger fault-findingDetails air intake routes, cleaning, and turbocharging in heavy diesels. Covers filter kinds, charge-air cooling, turbo parts, boost handling, failure signs, and step-by-step turbocharger fault checks.
Air filter kinds, levels, and blockageTurbocharger parts and termsWastegates, VGTs, and boost handlingIntercoolers and charge-air leak testingTurbo failure signs and root reasonsBoost pressure and air flow fault-findingLesson 5Usual failure ways and signs linking (smoke colours, smells, power loss, overheating)Connects usual diesel failure ways to seen signs. Covers smoke colours, smells, noises, power drop, and overheating, teaching orderly checks to narrow reasons before detailed strip or testing.
Black, blue, and white smoke fault-findingFuel, oil, and coolant smell signsPower loss under load fixingOverheating and coolant loss patternsAbnormal engine noises and shakingBasic fault splitting flow chartsLesson 6Engine sensors and controls: MAP/MAP-like, coolant temp, oil pressure, crank/cam positionLooks into key engine sensors and control plans on modern diesels. Details MAP, temperature, pressure, and speed sensors, wiring basics, ECM thinking, failure ways, and how to test and read sensor data safely.
MAP and boost pressure sensor workCoolant temperature and fan control inputsOil pressure sensing and protection thinkingCrank and cam position sensor basicsECM plans for fueling and timingBasic sensor testing with multimetersLesson 7Cooling system: radiators, coolant kinds, thermostats, water pumps, hosesExplains engine cooling system design and work. Covers coolant makeup, radiators, thermostats, pumps, hoses, and caps, plus bubbling, electric split, leak checks, overheating fault-finding, and upkeep ways.
Coolant kinds, additives, and mixing rulesRadiator building, flow, and cleaningThermostats, bypass lines, and testingWater pump design, drive, and failuresHoses, clamps, and pressure cap checksOverheating fault-finding and leak spottingLesson 8Diesel engine heat principles and four-stroke cycleIntroduces diesel heat rules and the four-stroke cycle. Links squeeze start, air-fuel mixing, and heat move to torque output, efficiency, emissions, and how work conditions affect engine output.
Squeeze start and diesel featuresIntake, squeeze, power, exhaust strokesBurn timing and pressure linesAir-fuel mix, mixture making, and smokeHeat move, efficiency, and power outputEffects of load, height, and temperatureLesson 9Exhaust and aftertreatment basics: silencers, particle filters, DOC, sensors (if there)Introduces exhaust flow and aftertreatment on modern diesels. Explains silencers, DOCs, DPFs, sensors, and regen basics, plus backpressure problems, check points, and safe handling of hot parts.
Exhaust routing and backpressure effectsSilencer kinds and noise control waysDOC work and light-off conditionsDPF loading, regen, and ashExhaust temperature and pressure sensorsAftertreatment fault signs overview
