VolvoHydraulic Parts

8085690 — Clutch Master Cylinder 8085690 For Volvo Truck Fh12 Fh16 Fh565 Fm10 Bus B7R B9R B12B

This clutch master cylinder is a critical component of the hydraulic clutch system, responsible for converting the driver's pedal input into hydraulic pressure to disengage the clutch. It ensures smooth and reliable gear changes by precisely controlling the release of the clutch mechanism, unlike a worn unit that may exhibit internal seal degradation and reduced hydraulic efficiency. Operators may notice a spongy or soft brake pedal feel, difficulty engaging gears, or the clutch not fully disengaging, leading to grinding noises when shifting.

Clutch Master Cylinder 8085690 For Volvo Truck Fh12 Fh16 Fh565 Fm10 Bus B7R B9R B12B – Part No 8085690 – Volvo Spare Part
Part Specifications
BrandVolvo
CategoryHydraulic Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

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.

Part TypeClutch Master Cylinder
MaterialCast iron and rubber seals
ApplicationHydraulic clutch system
Service LifeReplace every 3,000 hrs or 3 years
CompatibilityVolvo specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A spongy or soft clutch pedal is often the first sign of a failing master cylinder due to internal seal wear or air in the system. If left unaddressed, the clutch may not fully disengage, making gear changes difficult and potentially causing transmission damage. Continued operation with a compromised clutch system can lead to an inability to shift gears, stranding the vehicle.

Installation Tip

Ensure the clutch fluid reservoir is clean and free of debris before filling to prevent contamination of the new cylinder. Avoid overtightening the mounting bolts, as this can distort the cylinder body and cause premature seal failure.

Service Note

Always bleed the clutch hydraulic system thoroughly after installation to remove any air and ensure proper operation.