CATUndercarriage

1W4369 Pulley-Alternator — Cat 320B

This is an Alternator Pulley, designed to transmit rotational force from the engine's crankshaft to the alternator pulley via the drive belt. Manufactured to precise specifications, it ensures optimal alternator performance and longevity, unlike a worn pulley with a damaged groove. Operators might observe a squealing noise from the belt area, reduced battery charging, or a flickering battery charge light when the alternator pulley is failing.

Pulley-Alternator – Part No 1W4369 – 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 TypeAlternator Pulley
MaterialSteel
ApplicationEngine charging system
Service LifeReplace every 2,000 hrs or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing alternator pulley may initially produce a high-pitched squealing sound, especially under load. If ignored, the pulley groove can wear, causing the drive belt to slip, leading to insufficient battery charging. The ultimate consequence is a loss of electrical power and potential engine shutdown due to a dead battery.

Installation Tip

Before installing the new pulley, carefully inspect the alternator shaft for any signs of damage or wear. Ensure the new pulley is seated squarely on the shaft and that the drive belt is properly aligned before tightening.

Service Note

Always inspect the condition of the drive belt and the alternator shaft when replacing the alternator pulley.