ABS Brake System: How It Works, Warning Light and Faults
Learn how the ABS brake system works on heavy trucks, why the warning light comes on, how to diagnose sensor faults, and the correct replacement steps.
Heavy-Duty Truck Technical Blog: Air Brakes, Compressors, Parts & Maintenance
Expert resources for heavy-duty professionals: technical guides on air brake systems, compressors, transmission and engine parts, failure symptoms, maintenance intervals and OE cross-reference charts.
- Articles
- 181
- Categories
- 28
- Page
- 18
Fleet & Compliance
Truck Preventive Maintenance Checklist: PM A, B and C Intervals
How truck maintenance intervals combine mileage, engine hours and the calendar, plus the daily driver check and a system-by-system PM checklist.
Recent Posts
Engine Overheating in Heavy-Duty Trucks: Causes & Fixes
Learn why heavy-duty truck engines overheat, how to read the gauge, step-by-step diagnosis, and how coolant, water pump, thermostat, and fan clutch fail.
Brake Caliper Mechanism: Camshaft, Bearings, and Return Spring
Inside the truck air disc brake caliper: how the camshaft, thrust bearings, return spring and automatic adjuster turn push-rod force into pad pressure.
Brake Caliper Rubber Repair Kit: Failure & Replacement Guide
Brake caliper rubber repair kits explained: dust boots, o-rings, seals, pin bushings, failure signs, step-by-step replacement and the right grease to use.
Caliper Tappet & Dust Boot: Function, Failure, Replacement
Caliper tappet and dust boot on truck air disc brakes: what happens when the boot tears, why tappets seize, and how to inspect, measure and replace them.
Brake Pad Wear Sensor: Function, Faults & Replacement Guide
Truck brake pad wear sensors: how the wire or electronic sensor triggers the warning lamp, common wiring faults, and how to measure and replace one.
Tachograph Explained: Driver Cards, Symbols, Rest Times
How tachographs work in trucks and buses: analogue, digital and smart types, driver and company cards, symbols, download rules and roadside checks.
DPF (Diesel Particulate Filter) Guide: Symptoms & Cleaning
Learn what a DPF is, how passive and active regeneration work, warning signs of clogging, and safe cleaning methods for heavy commercial diesel trucks.
ADR Guide: Vehicle & Driver Rules for Dangerous Goods Transport
Learn what ADR means for heavy trucks: hazard classes, required vehicle equipment, driver certification, orange plate labeling, and inspection documents.
Power Steering Hydraulic Line Guide: Leaks & Replacement
Power steering hydraulic lines on trucks and tractor units: pressure, return and suction line symptoms, fitting types, replacement and bleeding.
Fuel Water Separator Filter: Symptoms, Replacement & Care
Truck fuel water separator filter and housing: how it works, water sensor, drain valve, heater, fault symptoms, replacement, bleeding and maintenance.
Truck Chassis Crack: Causes, Risk Assessment and Weld Repair Limits
What causes a truck chassis crack, how it's inspected and classified, and where stop-drill holes and weld repair reach their limit.
Fan Belt Tensioner: Failure, Replacement & Maintenance
What a truck fan belt tensioner does, why it squeals or vibrates, how to measure belt tension and how to replace a worn tensioner pulley bearing.
Oil Filter Cap and Housing: Leaks, Cracks and Seal Replacement
Truck engine oil filter cap and housing: why plastic caps crack, O-ring leak causes, bypass valve faults, and correct torque and seal replacement steps.
Piston Rings: Oil Consumption, Compression Loss and Replacement
Ring-related oil consumption and compression loss in truck diesel engines: how rings seal, blow-by and leak-down tests, ring gap and replacement.
Caliper Cover, Gasket & Plate: Faults, Replacement, Care
How caliper cover, gasket and plate faults develop on truck air disc brakes, how to diagnose leaks, replace the group correctly and extend its life.
Caliper Carrier & Guide Pins: Faults, Replacement, Care
How caliper carrier and guide pin wear causes uneven pad wear on trucks, how to test slide freedom, replace the kit step by step and grease it correctly.
Caliper Pad Retainer & Pad Plate: Faults, Replacement, Care
How the caliper pad retainer and pad plate work on truck disc brakes, symptoms of a fatigued spring, replacement steps and checks that keep wear even.
Intake Manifold and Intake Pipe: Faults, Diagnosis, Repair
How the intake manifold and charge air pipe work on truck diesel engines, how to spot boost leaks, run a pressure test and fit them leak free.
Rocker Arm & Shaft Set: Faults, Replacement and Maintenance
Learn how a heavy truck rocker arm and shaft set works, how to spot bushing wear, measure valve clearance and replace the assembly step by step.
Caliper Guide Pin, Bushing & Bolt: Faults, Repair, Care
Learn how caliper guide pins and bushings seize, how to diagnose uneven pad wear, and the correct removal, greasing and torque steps for replacement.
Clutched Air Brake Compressor: Faults, Replacement, Care
Clutched air brake compressors on trucks: how the clutch works, telling a slipping clutch from a worn compressor, replacement steps and torque values.
Solenoid Coil: Faults, Testing, Replacement and Maintenance
Understand how a solenoid coil works, spot open or shorted windings with a multimeter, replace it correctly and extend its service life on trucks.
