CATEngine Parts

1w-9812 Crankshaft Gear — Cat 3306

This crankshaft gear is a precision-engineered component essential for synchronizing the rotation of the crankshaft within the CAT engine. Crafted from hardened, high-strength steel, it ensures accurate timing and durability, unlike a worn gear that may exhibit chipped teeth or excessive play. Operators might observe symptoms such as engine misfires, loss of power, or abnormal noises originating from the front of the engine when this gear is failing.

Crankshaft Gear – Part No 1w-9812 – 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 TypeCrankshaft Gear
MaterialHardened forged steel
ApplicationEngine timing system
Service LifeReplace during engine overhaul or if worn
CompatibilityCAT 3204, 3304, 3306, 931B, 943, 951B, 955L
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early signs of a worn crankshaft gear can include intermittent engine misfires or a slight loss of engine smoothness. If the wear progresses, the engine may exhibit significant power loss, rough running, or audible gear noise. Failure to address this can lead to incorrect engine timing and potential internal engine damage.

Installation Tip

Ensure the crankshaft and gear mating surfaces are meticulously cleaned and free of any oil or debris before installation. Never attempt to force the gear onto the crankshaft; it should slide into place with moderate pressure.

Service Note

Inspect the camshaft gear, idler gears, and timing cover seals for wear or damage.