CATBearing & Bushing

234-3811 Boom Bushing — Cat 325D 329D

This is a heavy-duty boom bushing designed to provide a durable pivot point for the boom assembly on Caterpillar excavators, ensuring smooth and controlled movement. Manufactured to precise dimensions and material specifications, it offers superior resistance to wear and deformation compared to a worn bushing that may exhibit excessive clearance or surface damage. Operators may notice increased play in the boom, noisy operation, or imprecise bucket control when this bushing begins to fail.

Boom Bushing – Part No 234-3811 – CAT Spare Part
Part Specifications
BrandCAT
CategoryBearing & Bushing
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

Never strike bearings directly — use a bearing press or driver set. Heat housing (not bearing) to ease installation. Replace bearings in sets where applicable. Check housing bore diameter before fitting — out-of-round bores destroy new bearings.

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

Part TypeBoom Bushing
MaterialHardened Steel Alloy
ApplicationBoom Pivot
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of failure include noticeable looseness or excessive play in the boom swing, accompanied by creaking or grinding noises during operation. If left unaddressed, the increased wear can damage the pivot pins and boom structure, leading to reduced digging efficiency and potential hydraulic system stress. Continued operation risks compromising the structural integrity of the boom assembly.

Installation Tip

Thoroughly clean the bore and the pivot pin before attempting to install the new bushing to prevent premature wear. Never attempt to press the bushing in without proper alignment, as this can cause damage to the bushing or the surrounding housing.

Service Note

Inspect the boom pivot pins and the surrounding housing for wear or damage when replacing this bushing.