This is a main valve seal kit designed to restore the integrity of the hydraulic control valve assembly in Volvo excavators. It is manufactured to meet stringent OEM material and dimensional standards, ensuring a reliable seal that prevents internal and external leakage, unlike worn seals which allow fluid bypass and pressure loss. Operators may notice sluggish hydraulic functions, external fluid leaks around the valve body, or a loss of lifting/digging power when this seal kit fails.
Always verify with serial number before ordering.
Parts Trading Company · Mumbai, Est. 1956 · Same-day dispatch · Ships worldwide · GST invoice included
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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.
Initial signs of failure include a slight increase in hydraulic fluid temperature and a subtle loss of precise control. If ignored, the problem will progress to noticeable sluggishness in boom, stick, and bucket movements, accompanied by external oil leaks from the valve bank. Left unaddressed, this can lead to significant hydraulic system inefficiency and potential damage to other valve components.
Thoroughly clean all valve body surfaces and the spool before installation to prevent debris from damaging the new seals. Ensure seals are correctly oriented and seated without twisting to avoid immediate leakage.
Inspect the hydraulic control valve spool for any scoring or wear that might compromise the new seals.