CATBrake Parts

9W1077 Switch As-Start — Cat 3114 3116

This is a starter switch that initiates the engine cranking sequence when the ignition key is turned. It ensures proper electrical engagement with the starter motor solenoid, allowing the engine to start. A worn switch may exhibit intermittent operation or fail to engage the starter, leading to an inability to start the engine.

Switch As-Start – Part No 9W1077 – CAT Spare Part
Part Specifications
BrandCAT
CategoryBrake 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

Always replace brakes in axle sets. Bed-in new brake pads with 8–10 moderate stops from 40 km/h. Check disc runout with a dial gauge — maximum 0.1 mm. Inspect caliper slides and pistons when replacing pads.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeStarter Switch
MaterialNylon, Brass, Steel
ApplicationEngine starting circuit
Service LifeReplace as needed based on performance
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of a failing starter switch is often intermittent engine cranking. If ignored, the switch may stop engaging the starter motor altogether, preventing the engine from starting. This leaves the equipment unable to be operated.

Installation Tip

Ensure the battery is disconnected before removing the old switch to prevent accidental engagement. Do not overtighten the switch mounting nut, as this can damage the housing.

Service Note

Inspect the wiring harness and connectors for any signs of corrosion or damage when replacing the starter switch.