CATUndercarriage

1W4741 Gear As- Idler — Cat 120M 120M 2

This idler gear is a crucial element within the power train, designed to transmit rotational force and change the direction of rotation between shafts. It is manufactured with precision and hardened materials to ensure longevity and resistance to wear under high torque loads. Operators may notice increased gear noise, difficulty shifting, or a loss of power transmission when this gear begins to wear or chip.

Gear As- Idler – Part No 1W4741 – CAT Spare Part
Part Specifications
BrandCAT
CategoryUndercarriage
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

Cross-reference part number with serial number before ordering to confirm fitment. Keep original parts until new ones are confirmed correct. Record part numbers replaced for future reference.

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

Part TypeIdler Gear
MaterialHardened Steel
ApplicationPower Train / Transmission
Service LifeReplace based on inspection and wear
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of a worn idler gear is often an increase in whining or grinding noises from the transmission or power train. If left unaddressed, this can lead to intermittent power loss or difficulty engaging gears. Continued operation risks gear tooth breakage, causing significant internal transmission damage.

Installation Tip

Ensure the mating surfaces and gear teeth are thoroughly lubricated with the correct type of gear oil before installation. Avoid applying excessive force when seating the gear onto its shaft, as this can damage the splines.

Service Note

Inspect the transmission bearings, seals, and the condition of the gears it meshes with for any signs of wear or damage.