CATBrake Parts

8E6931 Disc — Cat 515 518c

This disc is a friction component within the braking system, designed to engage with other surfaces to generate the necessary force for deceleration. It is manufactured with specific friction characteristics and durability to ensure consistent stopping power, unlike a worn or glazed disc that offers reduced grip and increased heat buildup. Operators may notice a spongy brake pedal, reduced braking effectiveness, or a burning smell during heavy braking when this disc is failing.

Disc – Part No 8E6931 – 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 TypeBrake Disc
MaterialHigh-performance friction material on steel core
ApplicationBrake system
Service LifeReplace when friction material is worn to minimum thickness
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A worn or failing brake disc may initially cause a slight increase in the distance required to stop the equipment. If ignored, braking performance will continue to degrade, leading to a spongy pedal feel and potential overheating of the braking system. Continued operation with severely worn discs can lead to damage to other braking components, such as calipers or pads, resulting in more extensive repairs.

Installation Tip

Ensure the mounting surfaces on the hub and caliper are clean and free of rust or debris before installation. Do not reuse old fasteners; always use new hardware as specified.

Service Note

Inspect brake pads or shoes for wear, check the brake caliper or actuator for proper operation, and verify brake fluid level and condition.