This is a precision-machined brake piston that forms a critical component of the hydraulic braking system on Volvo wheel loaders, actuating the brake calipers. It is manufactured from high-strength steel to withstand high hydraulic pressures and resist wear, ensuring consistent braking force compared to a scored or leaking piston. Operators may experience a spongy brake pedal, reduced braking effectiveness, or brake fluid leaks when this piston begins to fail.
Always verify with serial number before ordering.
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Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.
A failing brake piston may initially manifest as a soft or spongy brake pedal, requiring more pedal travel to achieve braking. If the piston is leaking, brake fluid may be observed around the caliper, and braking effectiveness will progressively decrease. Continued operation with compromised braking can lead to uncontrolled movement of the machine or inability to stop safely.
Thoroughly clean the brake caliper bore before installing the new piston to prevent damage to the seals. Ensure the piston is installed perfectly straight to avoid binding or scoring the bore.
Always replace the brake caliper seals when replacing a brake piston, and bleed the brake system thoroughly after service.