CATBearing & Bushing

1W1656 Main Bearing — Cat 953 Engine: 3204

This main bearing is a crucial component of the engine's rotating assembly, supporting the crankshaft and ensuring smooth operation. Manufactured to precise specifications, it offers superior wear resistance and load-bearing capacity compared to a worn bearing. Operators may observe a drop in oil pressure, increased engine noise, or a knocking sound from the engine block when this main bearing begins to fail.

Main Bearing – Part No 1W1656 – 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 TypeEngine Main Bearing
MaterialTri-metal Alloy (Steel-backed with overlay)
ApplicationEngine Crankshaft Support
Service LifeReplace during engine overhaul or as indicated by oil pressure/noise
CompatibilityOEM specification for 3204 Engine
ConditionNew — OEM specification aftermarket

Failure Symptoms

A primary symptom of main bearing failure is a noticeable drop in engine oil pressure, especially at idle. This can progress to audible knocking sounds originating from the engine block as bearing clearance increases. Ignoring these symptoms can lead to severe crankshaft and engine block damage, resulting in a costly engine rebuild.

Installation Tip

Ensure the crankshaft journals and bearing surfaces are meticulously cleaned and free of any debris before installation. Never reuse old bearing shells, as they are designed for single use and will not provide proper support.

Service Note

Always inspect the crankshaft journals for scoring or damage and replace connecting rod bearings when servicing main bearings.