BUCKET AS-GENERAL PURPOSE 2663988 - Caterpillar

Illustration 1 g01091921
Lubrication system schematic
(1) Piston cooling jets
(2) Main oil gallery in cylinder block
(3) Engine pressure sensor
(4) Oil flow to valve mechanism
(5) Camshaft journals
(6) Oil filter bypass valve
(7) Main bearings
(8) Signal line
(9) Primary engine oil filter
(10) Engine oil pump
(11) Secondary oil filter
(12) Oil cooler bypass valve
(13) Engine oil cooler
(14) Oil pan sump
(15) High pressure relief valve
(16) Oil pump bypass valve
Illustration 2 g01098792
Right side view of engine
(9) Primary engine oil filter
(10) Engine oil pump
(11) Secondary oil filter (not shown)
(13) Engine oil cooler The lubrication system supplies 110 °C (230 °F) filtered oil at approximately 275 kPa (40 psi) at rated engine operating conditions. Oil pump bypass valve (18) is controlled by the engine oil manifold pressure, rather than the oil pump pressure. The engine oil manifold pressure is independent of the pressure drop that is caused by the engine oil filter and the