CATBrake Parts

8W8358 Actuator G — Cat 627E 623F

This is a G actuator, a component that converts hydraulic pressure into mechanical force to operate a specific function, often within the braking or steering system. It is built to precise tolerances to ensure smooth and responsive operation, unlike a worn actuator which may leak fluid or exhibit sluggish movement. Operators might notice delayed or weak braking response, or difficulty steering if this actuator is malfunctioning.

Actuator G – Part No 8W8358 – 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 TypeActuator
MaterialSteel, Rubber seals
ApplicationBrake or steering system
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing G actuator may initially present as a slight delay in system response or a minor hydraulic leak. If ignored, the actuator can lose its ability to generate sufficient force, leading to significantly reduced braking or steering effectiveness. This can compromise the operator's control over the equipment.

Installation Tip

Ensure the hydraulic system is properly bled of air after installation to prevent spongy operation. Always use new seals and O-rings when installing a replacement actuator.

Service Note

When replacing a hydraulic actuator, inspect the associated hydraulic lines, filters, and fluid for contamination or blockages.