This is an O-ring, part number VOE11709491, used for sealing connections in hydraulic and other fluid systems on Volvo backhoe loaders. It is manufactured from durable rubber compounds to create a tight seal, preventing leaks and maintaining system pressure, unlike a worn or damaged O-ring which can allow fluid to escape and contaminants to enter. Operators may observe hydraulic fluid leaks around fittings, a spongy feel in the controls, or a loss of hydraulic power when this O-ring fails.
Always verify with serial number before ordering.
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Cross-reference part number with serial number before ordering to confirm fitment. Keep original parts until new ones are confirmed correct. Record part numbers replaced for future reference.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.
Visible hydraulic fluid leaks around fittings or hoses are the most common sign of a failed O-ring. If left unaddressed, these leaks can lead to a significant loss of hydraulic fluid, reduced system pressure, and potential damage to hydraulic components due to overheating or lack of lubrication. This can result in a loss of machine functionality.
Always lubricate the O-ring with a compatible fluid before installation to prevent it from rolling or being cut during insertion into the groove. Ensure the groove and mating surface are clean and free of debris.
Inspect the mating surfaces for any nicks, burrs, or wear that could compromise the seal's integrity when replacing an O-ring.