This is a 1Nd Boom Cylinder Seal Kit designed for Volvo excavators, specifically for the boom cylinder assembly. It ensures the containment of hydraulic fluid within the cylinder, preventing leaks and maintaining optimal performance for boom lifting and lowering operations. Operators may observe a boom that drifts down under load, external fluid leaks from the cylinder, or a general loss of hydraulic force if these seals fail.
Always verify with serial number before ordering.
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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 boom cylinder seal will often first present as a noticeable drift of the boom when holding a load, or a slower than usual response when extending or retracting. If the issue persists, external hydraulic fluid will begin to leak from the cylinder rod seal, and the boom may lose significant lifting capacity. This compromises the machine's ability to safely perform its digging and lifting functions.
Before installing the new seals, meticulously clean the cylinder bore and piston grooves to remove any debris that could compromise the seal's function. Ensure the seals are oriented correctly according to the service manual to prevent immediate leakage upon system pressurization.
Inspect the cylinder rod for any signs of pitting, scoring, or bending, and check the hydraulic fluid for contamination.