Lesson 1Common heavy-equipment diesel setups (inline, V, turbocharged)Reviews common heavy-equipment diesel layouts an features. Compares inline an V engines, turbocharged an naturally aspirated setups, an how configuration affect packagin, service access, an performance inna di field.
Inline versus V engine architectureTurbocharged vs naturally aspirated dieselsWet an dry liner block constructionOverhead cam vs cam-in-block layoutsPower density an torque curve traitsService access an packagin concernsLesson 2Fuel system parts: tanks, filters, lift pumps, injection pumps, injectorsCovers diesel fuel storage an delivery from tank to injector. Explains component functions, flow paths, pressure stages, an filtration, plus common wear, contamination issues, diagnostic checks, an safe service procedures fi keep tings runnin smooth.
Tank design an ventin inna heavy equipmentLift pumps an low-pressure fuel circuitsFilter types, ratings, an water separationHigh-pressure injection pumps an controlInjector types, spray patterns, an wearFuel contamination causes an diagnosisLesson 3Lubrication system: oil types, filters, oil galleries, pressure systems, contamination signsCovers lubrication system layout from sump to bearings. Explains oil grades, additives, filters, galleries, an pressure control, plus contamination sources, samplin, wear indicators, an service intervals fi heavy equipment to avoid big problems.
Engine oil grades an service ratingsOil pump types an pressure regulationMain galleries, jets, an lube pathsFilter media, bypass valves, an serviceContamination sources an oil samplinLow oil pressure an noise diagnosisLesson 4Air intake an turbocharging: filters, intercoolers, turbocharger diagnosticsDetails air intake paths, filtration, an turbocharging inna heavy diesels. Covers filter types, charge-air coolin, turbo components, boost control, failure symptoms, an step-by-step turbocharger diagnostic checks fi fix issues quick.
Air filter types, ratings, an restrictionTurbocharger components an terminologyWastegates, VGTs, an boost controlIntercoolers an charge-air leak testinTurbo failure symptoms an root causesBoost pressure an airflow diagnosticsLesson 5Common failure modes an symptoms mappin (smoke colours, odours, loss a power, overheat)Links common diesel failure modes to observable symptoms. Covers smoke colours, odours, noises, power loss, an overheat, teachin systematic checks to narrow causes before detailed teardown or testin inna di workshop.
Black, blue, an white smoke diagnosisFuel, oil, an coolant odour indicatorsLoss a power under load troubleshootinOverheat an coolant loss patternsAbnormal engine noises an vibrationBasic fault isolation flowchartsLesson 6Engine sensors an controls: MAP/MAP-equivalents, coolant temp, oil pressure, crank/cam positionExplores key engine sensors an control strategies pon modern diesels. Details MAP, temperature, pressure, an speed sensors, wirin basics, ECM logic, failure modes, an how to test an interpret sensor data safely fi proper fix.
MAP an boost pressure sensor operationCoolant temperature an fan control inputsOil pressure sensin an protection logicCrank an cam position sensor principlesECM strategies fi fuelin an timinBasic sensor testin wid multimetersLesson 7Cooling system: radiators, coolant types, thermostats, water pumps, hosesExplains engine coolin system design an operation. Covers coolant chemistry, radiators, thermostats, pumps, hoses, an caps, plus cavitation, electrolysis, leak checks, overheat diagnosis, an maintenance practices fi keep engine cool.
Coolant types, additives, an mixin rulesRadiator construction, flow, an cleaninThermostats, bypass circuits, an testinWater pump design, drive, an failuresHoses, clamps, an pressure cap checksOverheat diagnosis an leak detectionLesson 8Diesel engine thermodynamic principles an four-stroke cycleIntroduces diesel thermodynamics an di four-stroke cycle. Links compression ignition, air–fuel mixin, an heat transfer to torque output, efficiency, emissions, an how operatin conditions affect engine performance inna heavy work.
Compression ignition an diesel propertiesIntake, compression, power, exhaust strokesCombustion phasin an pressure curvesAir–fuel ratio, mixture formation, an smokeHeat transfer, efficiency, an power outputEffects a load, altitude, an temperatureLesson 9Exhaust an aftertreatment basics: mufflers, particulate filters, DOC, sensors (if present)Introduces exhaust flow an aftertreatment pon modern diesels. Explains mufflers, DOCs, DPFs, sensors, an regeneration basics, plus backpressure issues, inspection points, an safe handlin a hot components fi proper care.
Exhaust routin an backpressure effectsMuffler types an noise control methodsDOC function an light-off conditionsDPF loadin, regeneration, an ashExhaust temperature an pressure sensorsAftertreatment fault symptoms overview
