VolvoHydraulic Parts

FPWM2411292 — Brake Relay Traction Valve K078420 85135349 For Volvo Bendix Truck  Atr-6

This is a brake relay traction valve, also known as an ABS modulator valve, for Volvo Bendix trucks. It plays a critical role in the anti-lock braking system (ABS) and traction control system by regulating air pressure to the brake chambers. This ensures optimal braking performance and stability, especially during emergency stops or on slippery surfaces. Symptoms of a failing valve include ABS warning lights illuminating, inconsistent braking force, or the traction control system not engaging properly.

Brake Relay Traction Valve K078420 85135349 For Volvo Bendix Truck  Atr-6 – Part No FPWM2411292 – 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 TypeBrake Relay Traction Valve
MaterialAluminum alloy and ABS plastic
ApplicationABS and Traction Control System
Service LifeReplace as needed based on diagnostic codes
CompatibilityOEM specification (Bendix K078420, 85135349)
ConditionNew — OEM specification aftermarket

Failure Symptoms

The most common initial symptom is the illumination of the ABS or traction control warning light on the dashboard. This can progress to inconsistent braking, where the truck pulls to one side during braking, or the traction control system fails to activate when wheel slip is detected. In severe cases, it can lead to reduced braking effectiveness and compromised vehicle stability.

Installation Tip

Ensure all air lines are clean and free of debris before connecting them to the new valve to prevent internal contamination. Do not overtighten the mounting bolts, as this can distort the valve body.

Service Note

It is recommended to check and clean the ABS wheel speed sensors and their wiring when replacing the brake relay traction valve.