This is a 24V DEF exhaust fluid pump, a critical component of the selective catalytic reduction (SCR) system in Volvo trucks. It precisely injects Diesel Exhaust Fluid (DEF) into the exhaust stream to reduce harmful NOx emissions, ensuring compliance with environmental regulations. A malfunctioning pump will result in increased exhaust emissions, a dashboard warning light, and potential derating of engine power, which operators will notice as reduced performance and emission alerts.
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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.
A failing DEF pump may initially cause intermittent emission control warnings or a slight increase in exhaust smoke. If ignored, the pump can cease operation entirely, leading to significant engine derating and potential non-compliance with emissions regulations. This can result in costly downtime and fines.
Ensure the DEF tank and lines are clean before installing the new pump to prevent immediate contamination. Do not operate the pump dry; prime it with DEF fluid as per the manufacturer's instructions.
It is crucial to inspect the DEF filter and the DEF lines for any signs of crystallization or blockage during pump replacement.