15810-ZY2-000ZA Honda VALVE ASSY., SPOOL *NH8* (Honda Code 6989701). (DARK GRAY)

Illustration 1 g06471531Reference: For more information, refer to the supplemental video "C9.3B Engine Lubrication System" on Caterpillar Channel1.Note: Click or copy the following link into a web browser (a CWS login is required to access Caterpillar Channel1), or scan the following QR code using a QR enabled device.https://channel1.mediaspace.kaltura.com/media/t/1_yhmm5g3a
Illustration 2 g06514694
Illustration 3 g01950413
Lubrication system schematic
(1) Passage to the rocker arms
(2) Cylinder head gallery
(3) Passage to pushrod lifters
(4) Piston cooling jets
(5) Oil supply line for the fuel pump
(6) Oil supply line for the air compressor
(7) Main bearings
(8) Camshaft bearings
(9) Main oil gallery
(10) Turbocharger oil supply line
(11) Supply for the number 4 main bearing
(12) Passage to camshaft idler gear bearing
(13) Oil filter bypass valve
(14) Passage
(15) Oil cooler bypass valve
(16) Engine oil filter
(17) Engine oil cooler
(18) Auxiliary engine oil filter (if equipped)
(19) Engine oil pump
(20) Oil pump bypass valve
(21) Engine oil panEngine oil pump (19) is mounted to the bottom of the cylinder block inside the engine oil pan (21). The engine oil pump (19) pulls oil from engine oil pan (21). The engine oil pump pushes the oil through the passage to the engine oil cooler (17). Oil then flows through engine oil filter (16). The filtered oil then enters the supply for the number 4 main bearing (11), turbocharger oil supply line (10), and main oil gallery (9). The supply for the number 4 main bearing (11) supplies oil to the number four camshaft bearing.The main oil gallery (9) distributes oil to main bearings (7), piston cooling jets (4), and camshaft bearings (8). Oil from main oil gallery (9) exits the front of the block. The oil then enters a groove that is cast in the front housing.Oil enters the crankshaft through holes in the bearing surfaces (journals) for the main bearing (7). Passages connect the bearing surface (journal) for the main bearing (7) with the bearing surface (journal) for the connecting rod.Oil supplied from