VolvoHydraulic Parts

20-078 — Volvo / Renault / Man / Scania / Mercedes / Iveco / Daf Seat Adjustment Valve

This is a seat adjustment valve, crucial for controlling the pneumatic or hydraulic functions that allow an operator to adjust their seat for optimal comfort and control. It is built to withstand the vibration and operational demands of heavy equipment, ensuring reliable seat positioning unlike a worn valve that may leak or stick. Operators might experience a seat that drifts, fails to adjust, or leaks air/fluid, impacting driving posture and fatigue.

Volvo / Renault / Man / Scania / Mercedes / Iveco / Daf Seat Adjustment Valve – Part No 20-078 – Volvo Spare Part
Part Specifications
BrandVolvo
CategoryHydraulic Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Flush hydraulic lines before fitting new components. Use only manufacturer-specified hydraulic fluid. Check O-rings and backup rings for correct orientation. Bleed air from system after installation.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeSeat Adjustment Valve
MaterialDurable composite and brass
ApplicationOperator Seat Adjustment System
Service LifeReplace as needed or every 3-5 years
CompatibilityVolvo, Renault, Man, Scania, Mercedes, Iveco, Daf specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of a failing seat adjustment valve is often a seat that slowly loses its set position or fails to hold air/fluid. If left unaddressed, the seat may become completely unresponsive to adjustments or may deflate/leak continuously, leading to operator discomfort and potential strain. Prolonged use with a faulty seat adjustment system can increase operator fatigue and reduce concentration.

Installation Tip

Before installing, ensure the air or hydraulic lines are clean and free of debris that could clog the new valve. Be careful not to cross-thread the connections when attaching the lines.

Service Note

Inspect the air or hydraulic lines connected to the seat for leaks or damage, and check the seat suspension system for proper function.