CATEngine Parts

1B8716 Woodruff Key — Cat 320C 320D

This Woodruff key is a semi-circular metal key used to connect a rotating machine element, such as a pulley or gear, to a shaft. It ensures positive drive by preventing slippage between the shaft and the component, maintaining precise timing and power transmission within the engine's accessory drive system. A worn key will appear rounded or chipped, leading to intermittent power loss or component misalignment, while a failed key can result in the connected component spinning freely on the shaft, causing loss of function for that accessory.

Woodruff Key – Part No 1B8716 – 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 TypeWoodruff Key
MaterialHardened Steel
ApplicationEngine Accessory Drive System
Service LifeReplace if damaged or during major engine overhaul
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of a failing Woodruff key is often a slight hesitation or intermittent loss of power from the driven accessory. If ignored, the key may begin to shear, causing the component to slip and misalign, potentially leading to further damage to the shaft or component. Continued operation with a compromised key can result in the complete loss of function for the affected accessory system.

Installation Tip

Ensure the keyway in both the shaft and the component is clean and free of debris before attempting installation. Do not force the key into the keyway; it should fit snugly but without excessive force.

Service Note

Inspect the shaft and the mating component's keyway for any signs of wear or damage when replacing this key.