CATElectrical Parts

1144294 Pulley-Tightener — Cat D8L D9R

This pulley-tightener is a critical component within the belt drive system of Caterpillar equipment, responsible for maintaining optimal belt tension. It ensures the belt remains properly engaged with pulleys, preventing slippage and ensuring efficient power transfer. A worn or seized pulley-tightener can cause premature belt wear, noise, and a loss of power to driven components.

Pulley-Tightener – Part No 1144294 – 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.

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

3S6050
Battery Terminal
1498292
Switch As- Temperature
7N4784
Electrical Parts Component
7e4839
Pulley
266-1475
Position Sensor
288-6821
Temperature Sensor

Browse all CAT Electrical Parts →

Ship This Part To Your Location

DubaiSaudi ArabiaNigeriaKenyaSouth AfricaBangladeshMalaysiaGhanaQatarEgypt
India
MaharashtraGujaratTamil NaduRajasthanKarnatakaTelangana

Full shipping information on regional pages · Air freight 2–12 days · GST invoice for India

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 TypeBelt Tensioner Pulley
MaterialSteel and rubber
ApplicationBelt drive system
Service LifeReplace every 2,000 hrs or as indicated by wear
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing pulley-tightener may first present as a squealing or chirping noise from the belt area. If ignored, the belt may begin to slip, leading to reduced performance of accessories like the alternator or fan, and potentially causing the belt to overheat or break. The ultimate consequence is the loss of power to critical engine-driven components, leading to operational failure.

Installation Tip

Before removing the old pulley-tightener, ensure the engine is off and cool to prevent injury. When installing the new unit, do not overtighten the mounting bolts, as this can damage the threads or the pulley housing.

Service Note

Inspect the drive belt for signs of wear, cracking, or glazing, and replace it if necessary when servicing the pulley-tightener.