CATElectrical Parts

1145333 Pressure Switch — Cat 904B 904H

This is a pressure switch designed to monitor and signal system pressure within Caterpillar equipment, commonly used in hydraulic or transmission systems. It acts as a critical sensor, activating an electrical circuit when a specific pressure threshold is met, thereby controlling various machine functions or providing warnings. A worn or failed pressure switch may not accurately report system pressure, leading to improper operation or a lack of warning for potentially damaging pressure conditions.

Pressure Switch – Part No 1145333 – 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 TypePressure Switch
MaterialBrass, Steel
ApplicationHydraulic or transmission pressure sensing
Service LifeReplace as needed based on operating conditions
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing pressure switch might cause intermittent operation of a related system, such as a hydraulic function not working consistently, or a warning light that flickers. If the switch fails completely, the system may operate incorrectly or without necessary safety interlocks. This can lead to inefficient performance or potential damage to components due to uncontrolled pressure.

Installation Tip

Ensure the system from which the switch is being removed is properly depressurized to avoid fluid spray and potential injury. Do not overtighten the switch when installing it, as this can strip the threads or damage the switch body.

Service Note

When replacing a pressure switch, inspect the associated wiring and connectors for any signs of damage or corrosion.