Camshaft bush 02/202901 Perkins RG, aftermarket

Camshaft bush 02/202901 is an aftermarket part for the Perkins 1104 (RG) engine. The card also lists 3112D075.

The camshaft bush is the plain bearing the front camshaft journal runs in, pressed into the block. When it wears, clearance grows, oil pressure can drop and the gear train gets noisy. Its oil hole must line up with the gallery in the block; a misaligned hole starves the journal. The camshaft sets the valve timing and is driven from the crankshaft through the gear train; its front journal also carries the gear load, so the bush there is the most heavily loaded bearing. A worn bush causes shaft run-out, changes the gear backlash and makes the gear train noisy. The bush is pressure-lubricated, and dirty or old oil shortens its life. It is usually changed at an overhaul with the camshaft out.

Specifications

Compatibility

The part is listed for machines with Perkins engines. Other parts are in Perkins engine.

Fitting

Measure the bore after pressing and machine it to the service manual if required. After fitting the bush, measure the shaft and gear clearances. The bush edge must be free of burrs.