CATEngine Parts

113t Fly Wheel Gear Ring — Cat

This flywheel gear ring is a crucial component of the engine's starting system, engaging with the starter motor to crank the engine. Manufactured from hardened steel, it provides a durable surface for the starter pinion, unlike a worn ring gear that may have chipped or rounded teeth. Operators will typically observe a grinding noise during attempted engine start, or the starter motor spinning without engaging the engine, when the gear ring is damaged.

Fly Wheel Gear Ring – Part No 113t – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine 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

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.

Part TypeFlywheel Gear Ring
MaterialHardened steel
ApplicationEngine starting system
Service LifeReplace when teeth show wear or damage
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The most common symptom is a loud grinding or meshing noise when the starter motor attempts to engage. If the damage is severe, the starter may spin freely without turning the engine over. Continued attempts to start with a damaged gear ring can further damage the starter motor and flywheel.

Installation Tip

Ensure the flywheel surface is perfectly clean and free of oil or grease before heating and installing the gear ring. Avoid overheating the gear ring, as this can alter its temper and reduce its hardness.

Service Note

Inspect the starter motor pinion gear and the flywheel for any signs of damage or excessive wear when replacing the flywheel gear ring.