This is a main pump seal kit, designed to prevent hydraulic fluid leaks from the main hydraulic pump on Volvo excavators. It utilizes durable sealing materials to maintain system integrity and prevent contamination ingress. A worn or damaged seal kit can lead to visible hydraulic fluid leaks, a drop in hydraulic system pressure, and sluggish operation of hydraulic functions.
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.
The initial symptom of a failing main pump seal kit is typically a visible hydraulic fluid leak around the main pump housing. If left unaddressed, the leak will worsen, leading to a gradual loss of hydraulic system pressure and slower, less responsive machine functions. Continued operation with a leaking pump risks significant hydraulic fluid loss and potential damage to pump components.
Thoroughly clean all sealing surfaces on the pump housing and shaft before installing new seals to ensure a proper fit. Avoid using sharp tools that could scratch or damage the new seals during installation.
Inspect the hydraulic pump shaft for scoring or wear, and clean the hydraulic system reservoir and filters when replacing the main pump seal kit.