Camshaft: Fault Symptoms, Diagnosis & Replacement Guide
Camshaft faults, symptoms, diagnosis and replacement steps for heavy truck diesel engines, with reference torque and valve clearance values.
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Articles
Turbocharger: Symptoms, Diagnosis, Replacement & Maintenance
How truck turbochargers work, early failure signs, measuring boost and shaft play, and replacing CHRA units correctly on heavy commercial diesel engines.
Engine Oil Pump: Faults, Diagnosis, Replacement Guide
Engine oil pump symptoms, diagnosis, replacement steps, torque specs and OE-matched VADEN ORIGINAL parts for heavy commercial diesel trucks.
Brake Dust Shield: Faults, Replacement & Maintenance Guide
On a truck, a rusted or bent brake dust shield rubbing the disc looks trivial, yet it shortens pad life and weakens wet braking: diagnosis, replacement, care.
Trailer Control Valve: Faults, Replacement & Maintenance Guide
How the trailer control valve (Anhangersteuerventil) works on heavy trucks, its failure symptoms, gauge diagnosis, replacement steps and OE maintenance tips.
Cab Tilt Pump: Faults, Replacement & Maintenance Guide
If a truck cab won't tilt, won't hold or settles back down, the hand-operated cab tilt pump's check valves and seals are the usual cause: diagnosis and fix.
Levelling Valve: Faults, Replacement & Maintenance Guide
An air-suspended truck or trailer sitting low on one side or not holding ride height points to the levelling valve lever setting: diagnosis and replacement.
Compressor Cooling Plate & Water Cooling: Faults, Repair & Care
Diagnose, replace and maintain the heavy-truck air compressor cooling plate and water cooling: symptoms, internal-leak testing, torque values and FAQ.
Foot Brake Valve: Faults, Replacement & Maintenance Guide
Pedal free play or unbalanced braking on a heavy truck often traces to the dual-circuit foot brake valve: fault diagnosis, gauge testing and replacement.
Quick Release Valve (QRV): Faults, Replacement & Care
How a quick release valve (QRV) works on truck air brakes: fault symptoms, diagnosis, step-by-step replacement, torque values and maintenance tips.
Clutch Fork: Fault, Replacement and Maintenance Guide
In a heavy truck a sinking or rattling clutch pedal usually starts at the release fork pivot ball, not the pressure plate: diagnosis and replacement.
Relay Valve & ABS Relay Valve: Faults, Replacement & Care
Heavy commercial vehicle relay valve and ABS relay valve guide: how it works, fault symptoms, diagnosis, replacement steps, torque values and maintenance tips.
