CATUndercarriage

536-3555 Triple Flange Front Idler — Cat Loader 239D3 249D3

This Triple Flange Front Idler is a crucial component of the undercarriage system, guiding and supporting the track on the front end of the machine. Engineered to high standards, it provides exceptional durability and smooth track rotation, outperforming worn or damaged idlers. Operators may notice increased track noise, uneven track wear, or difficulty steering when this idler begins to fail.

Triple Flange Front Idler – Part No 536-3555 – 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

Related CAT Parts

From the same category — may also be needed

9P4747
Undercarriage Component
8C5604
Undercarriage Component
5i9336
Undercarriage Component
T450X100KX48
Undercarriage Component
3258625
Excavators & Construction Equipment
1686690
Spring

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 TypeTriple Flange Front Idler
MaterialHardened forged steel
ApplicationUndercarriage Front Track Guide
Service LifeReplace as needed based on wear inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early signs of idler failure include increased noise from the front of the undercarriage and potential track misalignment. If ignored, the idler can seize or break, leading to track derailment and damage to other undercarriage components. Continued operation risks severe damage to the entire track system and significant operational downtime.

Installation Tip

Ensure the mounting surfaces are clean and free of debris before installing the new idler to ensure proper seating and alignment. Do not overtighten the mounting bolts, as this can strip threads or damage the idler bore.

Service Note

Inspect track chains, rollers, drive sprockets, and the track tensioning system for wear or damage when replacing the front idler.