This is a pilot valve seal kit, designed to restore the proper sealing and function of the pilot hydraulic control valve in excavators. It contains all the necessary seals and O-rings to rebuild the valve, ensuring precise hydraulic control over machine functions like boom, stick, and bucket movements. Worn seals in the pilot valve can lead to slow or jerky hydraulic responses, unintended movement of attachments, or difficulty holding position. Operators may notice a lack of responsiveness or 'drift' in the hydraulic controls.
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.
The first indication of failing pilot valve seals is often a sluggish or imprecise response from the hydraulic controls, such as the boom or bucket. This can progress to a noticeable 'drift' where the attachment slowly moves on its own, or difficulty in maintaining a precise position. If left unaddressed, it can lead to operator fatigue and reduced productivity, and in severe cases, unintended machine movement posing a risk.
Thoroughly clean all internal valve passages and spool surfaces before installing the new seals to prevent contamination. Ensure all seals are properly lubricated with the specified hydraulic fluid before insertion to avoid tearing or damage.
Inspect the hydraulic control valve spool and housing for scoring or wear when replacing the seals.