CATBearing & Bushing

1W1656-030 Main Bearing — Cat 953 Engine: 3204

This main bearing is a critical engine component that supports the crankshaft and ensures smooth rotation within the crankcase. It is manufactured to meet stringent OEM quality standards, providing superior wear resistance compared to a damaged or worn bearing. Symptoms of a failing main bearing include a persistent knocking sound from the engine, decreased oil pressure, and potential engine seizure if ignored.

Main Bearing – Part No 1W1656-030 – 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
MaterialSteel-backed babbitt lining
ApplicationCrankshaft support
Service LifeReplace based on engine overhaul schedule
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A persistent, deep knocking sound originating from the engine is the first sign of main bearing failure. As the wear progresses, oil pressure will drop, and the engine may begin to run rough. Continued operation risks severe crankshaft and engine block damage.

Installation Tip

Ensure the crankshaft and bearing surfaces are meticulously clean before installation, as even microscopic debris can cause premature wear. Avoid mixing bearing shells from different sets or reusing old shells.

Service Note

Always inspect the crankshaft journals for scoring or wear and replace the crankshaft seals when replacing main bearings.