VolvoHydraulic Parts

85000031 — Power Steering Pump 3986328 85000031 7403986328 For Volvo Fh12 Fm12 Nh12 B12M

This is a power steering pump, a critical component of the steering system that pressurizes hydraulic fluid to assist the operator in turning the wheels. It is engineered to meet rigorous performance standards, ensuring smooth and responsive steering compared to a worn unit that may leak or provide inconsistent assist. Operators may notice stiff steering, whining noises from the pump, or a lack of power assist when turning.

Power Steering Pump 3986328 85000031 7403986328 For Volvo Fh12 Fm12 Nh12 B12M – Part No 85000031 – 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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Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

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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 TypePower Steering Pump
MaterialCast iron and steel components
ApplicationPower steering system
Service LifeReplace every 5,000 hrs or as needed
CompatibilityVolvo 3986328, 7403986328
ConditionNew — OEM specification aftermarket

Failure Symptoms

The most common symptom of a failing power steering pump is a noticeable increase in steering effort, making it harder to turn the wheel. You may also hear a whining or groaning noise that changes with steering input, and fluid leaks from the pump housing are also indicative of failure.

Installation Tip

Ensure the power steering fluid reservoir is completely drained before removing the old pump to minimize spillage. Avoid running the new pump dry, as this can quickly damage its internal components.

Service Note

Inspect the power steering hoses and steering gear for any signs of leaks or wear, and consider replacing the power steering fluid.