CATEngine Parts

335-5321 Pressure Sensor Switch — Cat 906H2

This pressure sensor switch monitors and transmits hydraulic system pressure data to the control unit, enabling proper operation of hydraulic functions. It is engineered to withstand high pressures and vibrations common in hydraulic systems, ensuring accurate readings unlike a faulty sensor with a damaged diaphragm or corroded electrical contacts. Operators may notice sluggish hydraulic performance, warning lights on the dash, or erratic operation of hydraulic implements if this sensor fails.

Pressure Sensor Switch – Part No 335-5321 – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine 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

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

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

Part TypeHydraulic Pressure Sensor Switch
MaterialSteel, brass, electronic components
ApplicationHydraulic system pressure monitoring
Service LifeReplace every 4,000 hrs or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The initial symptom of a failing pressure sensor switch is often an inaccurate reading displayed on the equipment's monitoring system, or a delay in hydraulic response. If the sensor fails completely, the machine may default to a safe mode, significantly reducing hydraulic power, or a warning light will illuminate. Continued operation without accurate pressure feedback can lead to component damage within the hydraulic system due to incorrect pressure regulation.

Installation Tip

Ensure the hydraulic system is properly depressurized before attempting removal or installation to prevent injury and fluid loss. Use the correct thread sealant specified for hydraulic fittings to prevent leaks.

Service Note

Inspect hydraulic fluid level and filter condition, and check for any leaks in the system when replacing the pressure sensor switch.