CATUndercarriage

1731498 Idler Pulley — Cat 973D 938G

This idler pulley is a crucial element of the undercarriage system, designed to guide and maintain proper tension on the track. Manufactured to meet rigorous OEM specifications, it provides smooth rotation and resists wear from abrasive environments, unlike a worn idler with a damaged bearing. Operators may notice increased noise from the undercarriage, excessive track slack, or uneven track wear when this idler pulley begins to fail.

Idler Pulley – Part No 1731498 – 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 Pulley
MaterialSteel
ApplicationUndercarriage System
Service LifeReplace as needed based on wear inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first symptom of a failing idler pulley is often a grinding or rumbling noise coming from the undercarriage. If not addressed, the bearing can seize, causing the track to become misaligned or even derail, leading to potential damage to other undercarriage components. Ignoring these signs risks significant operational downtime and expensive repairs.

Installation Tip

Ensure all mounting surfaces are clean and free of debris before installing the new idler pulley. Avoid overtightening the mounting bolts, as this can damage the pulley's bearing or the mounting bracket.

Service Note

Inspect track shoes, links, and rollers for wear and damage when replacing the idler pulley.