ACCUMULATOR 5U5593 - Caterpillar

Illustration 1 g00734614
All the clutches in the transmission, all the planetary gears in the transmission, and all the bearings in the transmission are lubricated by pressure oil. After the oil has been cooled by the oil cooler, the oil flows to the transmission. The oil enters the transmission through oil passages (1) and (2) and through an orifice in the transmission end plate. The oil flows through internal passages in the transmission to the bearings, to the clutches, and to the planetary gears.Oil for lubrication of the No. 1 clutch comes through an orifice in the transmission end plate.Oil passage (1) supplies oil for lubrication of the No. 2 clutch, the No. 3 clutch, the No. 4 clutch, and the No. 5 clutch.Oil for the No. 6 clutch is supplied through oil supply passage (2) .All clutch leakage oil and return oil flows to the bottom of the transmission. The oil then flows to the main oil reservoir in the output transfer gear case.The restriction to the flow of oil inside the planetary transmission keep lubrication pressure at 105 kPa (15 psi).