CATElectrical Parts

1079579 Pulley — Cat 120K 120K 2

This is a replacement pulley designed for various Caterpillar equipment, serving a crucial role in belt-driven systems by guiding and maintaining tension on the drive belt. Manufactured from durable materials, it ensures smooth rotation and longevity, outperforming worn pulleys that can cause belt slippage or premature wear. Operators might observe increased noise, belt vibration, or a loss of power to driven accessories when a pulley begins to fail.

Pulley – Part No 1079579 – 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 TypePulley
MaterialSteel or Cast Iron
ApplicationBelt drive system
Service LifeReplace every 4,000-6,000 hours or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A worn pulley may initially produce a squealing noise or exhibit wobble during operation. If ignored, the bearing can seize, causing the belt to break or slip excessively, leading to a loss of power to critical systems like the alternator or cooling fan. This can result in equipment overheating or a dead battery.

Installation Tip

Before removing the old pulley, mark its orientation on the shaft if it's a keyed component to ensure correct reinstallation. When installing the new pulley, ensure it is seated squarely on the shaft and avoid using excessive force, which could damage the shaft or the pulley.

Service Note

Inspect the drive belt for wear, cracks, or glazing, and check the tensioner assembly for proper operation when replacing the pulley.