CATUndercarriage

1154204 Idler Pulley — Cat 320B

This idler pulley is a crucial part of the undercarriage system, responsible for maintaining proper track tension and guiding the track chain. Manufactured to exacting standards, it provides smooth rotation and durability, outperforming a worn pulley that may exhibit bearing noise or a damaged flange. Operators may notice increased track noise, vibration, or uneven track wear when an idler pulley begins to fail.

Idler Pulley – Part No 1154204 – 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.

WhatsApp for Price & Availability☎ Call Mumbai Office

Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

M IST.', };

Related CAT Parts

From the same category — may also be needed

1156429
Cylinder
1156424
Caterpillar Track Adjuster & Recoil Gp 1156424
296-6181
Sprocket Housing
930321
Nut, Shoe
7Y0773
Spring Gp-Recoil
536-3552-348-9647
Track Roller

Browse all CAT Undercarriage →

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 inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a failing idler pulley is often a distinct grinding or squealing sound from the front of the undercarriage. If ignored, the pulley bearing can seize, causing the pulley to stop rotating and potentially damaging the track chain or leading to track derailment. This can result in significant downtime and costly repairs to the undercarriage.

Installation Tip

Before installing the new idler pulley, thoroughly clean the mounting bracket and ensure the shaft surfaces are free of rust or debris. Do not apply excessive force when tightening the mounting hardware, as this can damage the new bearing.

Service Note

Inspect the track chain, rollers, and final drive for wear and proper lubrication when replacing the idler pulley.