CATUndercarriage

304-1894 Rear Idler — Cat Loader 299C 289C 259B3

The Rear Idler is a vital component of the undercarriage system, guiding the track and maintaining proper tension to ensure efficient operation. Manufactured to meet stringent OEM quality standards, it provides superior resistance to wear and deformation compared to a damaged or worn idler. Operators may notice increased vibration, abnormal track noise, or a tendency for the track to come off when this part begins to fail.

Rear Idler – Part No 304-1894 – 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 TypeRear Idler
MaterialHardened steel
ApplicationUndercarriage system
Service LifeReplace as needed based on wear
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early indicators of a failing rear idler include excessive noise from the front of the undercarriage and a visible wobble or looseness in the track. If ignored, this can lead to uneven track wear, reduced machine stability, and potential track derailment. The primary risk is damage to other undercarriage components and significant operational downtime.

Installation Tip

Thoroughly clean the mounting surfaces and ensure all seals are properly seated before installing the new rear idler. Avoid using excessive force when tightening mounting hardware, which could damage the threads.

Service Note

When replacing the rear idler, inspect the track chains, rollers, and front idler for wear and proper alignment.