CATElectrical Parts

1247792 Pulley As-Idler — Cat 120K 120K 2

This is an idler pulley assembly that guides and tensions a belt within the equipment's drive system, ensuring proper power transmission. It is manufactured to meet high-quality standards, offering smooth rotation and durability compared to a worn pulley with a seized or damaged bearing. Operators may notice increased belt noise, premature belt wear, or a loss of power if this pulley fails.

Pulley As-Idler – Part No 1247792 – CAT Spare Part
Part Specifications
BrandCAT
CategoryElectrical Parts
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

Disconnect main battery before working on electrical components. Use dielectric grease on all connector pins. Check ground connections — most electrical faults trace to poor grounds. Test with multimeter before installing new parts.

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 Assembly
MaterialSteel and bearing
ApplicationBelt drive system
Service LifeReplace every 3,000 hrs or 3 years
CompatibilityOEM specification
ConditionNew — CTP aftermarket replacement

Failure Symptoms

The initial symptom of a failing idler pulley is often an audible noise, such as squealing or grinding, coming from the belt drive area. If ignored, the bearing can seize, causing the belt to slip or break, leading to a loss of function for driven accessories. This can result in overheating, loss of power steering, or other critical system failures.

Installation Tip

Before installing, clean the mounting surface thoroughly to ensure a flush fit and proper alignment of the pulley. Avoid using excessive force when tightening the mounting bolt, as this can damage the pulley bearing or the mounting threads.

Service Note

When replacing an idler pulley, inspect the drive belt for wear or damage and check the tensioner for proper operation.