CATBrake Parts

6y-7981 Clutch Disc — Cat 120G 120M

This clutch disc is a crucial component within the transmission system, designed to engage and disengage power from the engine to the drivetrain. It is manufactured to meet stringent Caterpillar quality standards, ensuring superior friction performance and durability compared to a worn disc that may exhibit glazing or material loss. Operators may notice symptoms such as difficulty shifting gears, clutch slippage, or a burning smell when the clutch disc begins to fail.

Clutch Disc – Part No 6y-7981 – CAT Spare Part
Part Specifications
BrandCAT
CategoryBrake 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

Always replace brakes in axle sets. Bed-in new brake pads with 8–10 moderate stops from 40 km/h. Check disc runout with a dial gauge — maximum 0.1 mm. Inspect caliper slides and pistons when replacing pads.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeClutch Disc
MaterialFriction material on steel backing
ApplicationTransmission clutch system
Service LifeReplace based on wear inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of a failing clutch disc include difficulty engaging gears or a noticeable increase in engine RPM without corresponding vehicle speed increase. If ignored, the clutch will progressively slip more, leading to reduced power delivery and potential overheating of the transmission. Continued operation with a worn clutch disc can result in inability to transmit power to the wheels, immobilizing the equipment.

Installation Tip

Ensure the flywheel surface is perfectly clean and free of oil or debris before installation. Avoid overtightening the pressure plate bolts, as this can warp the clutch assembly and lead to premature failure.

Service Note

Inspect the pressure plate, release bearing, and pilot bearing for wear or damage when replacing the clutch disc.