CATBearing & Bushing

2944890 Main Bearing Kit — Cat 236B 236B3

This is a main bearing kit designed to support the rotating crankshaft within the engine's crankcase. It is manufactured to meet stringent material and dimensional tolerances, ensuring smooth operation and preventing excessive wear compared to a damaged or worn bearing. Symptoms of a failing main bearing kit include a persistent knocking or rumbling noise from the engine, a drop in oil pressure, and potentially visible metal particles in the engine oil.

Main Bearing Kit – Part No 2944890 – 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.

WhatsApp for Price & Availability☎ Call Mumbai Office

Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

M IST.', };

Related CAT Parts

From the same category — may also be needed

1W3906
Bearing
7W2136-030
Bearing
4F1999
1B3909
1M1471
Guard Assem
3K0650
3K0649
9N5403
Bearing

Browse all CAT Bearing Bushing →

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 TypeMain Bearing Kit
MaterialSteel alloy with bearing surface
ApplicationEngine crankshaft support
Service LifeReplace as part of engine overhaul or upon failure detection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A low-frequency knocking sound originating from the engine's lower end is often the first sign of main bearing wear. As the condition worsens, this noise will increase in frequency and volume with engine RPM, and oil pressure may begin to drop. Continued operation with worn main bearings can lead to crankshaft damage and potential engine seizure.

Installation Tip

Ensure the crankshaft journals are meticulously cleaned and inspected for any scoring or damage before installing new bearings. Avoid overtightening the main bearing caps, as this can distort the bearing housing and compromise oil clearance.

Service Note

Inspect the crankshaft journals for wear and scoring, and check the oil pump for proper function when replacing main bearings.