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.
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
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.
Oil Spray Jet: Faults, Replacement and Maintenance Guide
Engine oil spray jet guide for trucks: how piston cooling nozzles work, clogging and low oil pressure symptoms, diagnosis, replacement steps and torque values.
Hydraulic Clutch Pedal Unit: Fault Diagnosis, Replacement, Maintenance
How to diagnose a faulty hydraulic clutch pedal unit on trucks, replace and properly bleed it, and maintain it to prevent a spongy clutch pedal.
Cab Suspension (Shock Absorber, Air Bellow, Leveling Valve): Faults & Repair
How to diagnose truck cab suspension faults, replace the shock absorber, air bellow and leveling valve safely, and keep the cab level and comfortable.
Clutch Hose Failure, Replacement and Maintenance Guide | VADEN
Clutch hose symptoms, swelling test, step-by-step replacement, torque values and maintenance tips for heavy commercial vehicles — VADEN technical guide.
Emergency / Park-Release Valve: Faults, Replacement, Care
How the trailer park-release valve locks and releases spring brakes, why it sticks or leaks air, plus diagnosis, replacement steps and torque values.
Lift Axle Valve: Faults, Replacement and Maintenance Guide
Lift axle valve guide for trucks and trailers: how it works, fault symptoms, pressure diagnosis, step-by-step replacement and maintenance checkpoints.
Turbo Intake & Exhaust Inlet Pipe: Faults and Replacement
Turbo intake and exhaust inlet pipe faults on trucks: leak symptoms, diagnosis, step-by-step replacement, torque values and maintenance tips from VADEN.
Flywheel Housing: Faults, Replacement & Maintenance Guide
Flywheel housing (bell housing) on heavy trucks: failure symptoms, dial indicator runout checks, step-by-step replacement, torque values and maintenance.
Steering Drag Link & Tie Rod: Faults, Replacement, Care
On trucks, steering play usually starts at the drag link and tie rod ball joints, not the box: wear testing, safe replacement and toe alignment afterwards.
