CATHydraulic Parts

1D4634 Cap Screw — Cat 320C 320D

This is a high-strength cap screw used for securing various components, often within the hydraulic system or engine block of Caterpillar machinery. It is manufactured from hardened steel to meet precise tensile strength and dimensional specifications, offering superior resistance to vibration and fatigue compared to a standard bolt. Operators might observe loose or vibrating components, or fluid leaks from a compromised connection, if this fastener fails or is improperly installed.

Cap Screw – Part No 1D4634 – CAT Spare Part
Part Specifications
BrandCAT
CategoryHydraulic 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

Flush hydraulic lines before fitting new components. Use only manufacturer-specified hydraulic fluid. Check O-rings and backup rings for correct orientation. Bleed air from system after installation.

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

Part TypeCap Screw
MaterialHardened Steel
ApplicationComponent Fastening (e.g., Hydraulic System)
Service LifeReplace if removed or damaged
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A loose or missing 1D4634 cap screw can lead to component vibration and potential misalignment. If the fastener fails under load, it may result in fluid leaks from the connected assembly or the gradual loosening of critical parts. The ultimate consequence of ignoring such issues is the potential failure of the connected component due to improper support or stress.

Installation Tip

Always use a new cap screw when reassembling components, as reusing old fasteners can lead to improper torque and potential failure. Ensure the threads on both the screw and the receiving hole are clean and free of debris before installation.

Service Note

When replacing a cap screw, inspect the mating surfaces of the components it secures for any signs of damage or wear.