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.
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.
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Recent Posts
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.
Transmission PTO: Faults, Replacement and Maintenance Guide
A workshop guide to truck transmission PTO units: how they work, why they fail to engage, correct backlash setting on fitting and habits that extend life.
Transmission Housing Repair Kit & Valve: Faults & Replacement
Understand how the pneumatic shift valve and its seal kit work, spot air leaks early, replace the parts correctly and extend service life on trucks.
Truck Water Pump Repair: Housing, Gasket and Water Pipe
Learn how a heavy truck water pump fails, how to diagnose leaks and bearing noise, and how to replace the housing, gasket and water pipe correctly.
Brake Chamber, Diaphragm & Hose: Faults, Replacement, Care
Learn how to spot a leaking brake chamber, measure push rod stroke, cage the power spring safely and replace the unit and hose without risk on heavy trucks.
Exhaust Clamp & Connecting Pipe: Faults, Replacement, Care
Diagnose exhaust leaks, replace clamps and flex pipes in the correct order, apply the right torque bands and extend service life on heavy trucks.
Compressor Connection Hardware: Faults, Replacement, Care
How truck air compressor adapters, bolts, plugs and hoses fail, how to diagnose leaks and blockages, replace them correctly and extend service life.
Engine Gasket Set: Failure, Replacement and Maintenance Guide
How a truck engine gasket set fails, how to confirm the leak with pressure tests, and how to fit it correctly with the right torque and angle steps.
Compressor Repair and Gasket Kit: Faults, Replacement, Care
Diagnosing air compressor gasket failure on trucks: choosing the right repair kit scope, preparing surfaces, torquing correctly and extending seal life.
Single vs Twin-Cylinder Air Compressor: Choice & Fitment
Learn how to match single or twin-cylinder air brake compressors to your truck: flow demand, drive and cooling interfaces, fault diagnosis, replacement steps.
Air Dryer Purge Valve: Faults, Replacement and Maintenance
How a truck air dryer purge valve works, spotting leak and freezing symptoms, safe step-by-step replacement and keeping the air brake system dry.
EGR Valve & EGR Flap: Faults, Replacement and Maintenance
How the EGR valve and EGR flap work on truck diesel engines, how to spot soot-related faults, diagnose them, replace them and extend service life.
Truck Wheel Hub: Faults, Replacement and Maintenance Guide
How to spot truck wheel hub bearing noise, heat and seal leaks, set bearing endplay correctly, replace the hub step by step and extend its service life.
Clutch Release Bearing: Fault, Replacement and Care Guide
How a truck clutch release bearing works, how to spot noise and pedal symptoms, measure release travel, replace it correctly and extend its life.
Brake Chamber: Fault Diagnosis, Replacement and Maintenance Guide
Learn what a brake chamber does, how to diagnose air leaks and stroke faults, replace it safely, and maintain it for reliable heavy-duty air brakes.
Diesel Injection Line & Fuel Pipe: Faults, Repair, Maintenance
Heavy truck injection line and fuel pipe guide: high-pressure vs supply line, leak and air ingress diagnosis, torque sequence, replacement and maintenance.
Chassis Mounting Bracket: Failure, Replacement & Care Guide
Chassis mounting bracket guide for trucks and trailers: fatigue cracks, diagnosis, step-by-step replacement, bolt torque values and maintenance tips.
