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BUCKET GP 2389519 - Caterpillar



2389519 BUCKET GP Caterpillar parts BUCKET
Rating:
71
Alternative (cross code) number:
CA2389519
238-9519
2389519
Caterpillar 2389519 BUCKET GP

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Illustration 1 g01200476
Location of the torque converter and transmission gear pump
(1) Transmission lubrication section
(2) Transmission charge pump section
(3) Torque converter charge pump section
(4) Transmission scavenge pump section
Illustration 2 g01200500
(1) Transmission lubrication section
(2) Transmission charge pump section
(3) Torque converter charge pump section
(4) Transmission scavenge pump section
(5) Pump prime orifice
(6) Transmission charging hydraulic filter
(7) Oil filter for Torque converter charge pump
(8) Scavenge screen
(9) Baffle
(10) Torque converter sump
(11) Oil cooler for the torque converter and for the transmission The gear pump for the torque converter and for the transmission has four sections. The following sections are the four sections of the oil pump:
Transmission lubrication section (1)
Transmission charge pump section (2)
Torque converter charge pump section (3)
Transmission scavenge pump section (4) The gear pump is driven by a gear on the torque converter.Note: Each section of the gear pump receives oil that is shown in Illustration 2. All of the oil flows from torque converter sump (10) to the sections of the gear pump. The passages in the torque converter sump allow the sections to receive oil in the order that is shown. The purpose for this order does not allow air that is trapped in the torque converter at engine start-up to be purged through transmission charge pump section (3). The air will be purged through torque converter charge pump section (3).Oil from oil cooler (11) flows through torque converter sump (10) to transmission lubrication section (1). Oil from oil cooler (11) for the torque converter and for the transmission is the only oil that supplies transmission lubrication section (1). Transmission lubrication section (1) sends oil for the lubrication of the transfer gears and of the transmission. The excess oil leaks to the bottom of the transmission case.Oil from torque converter sump (10) through scavenge screen (8) supplies all of the oil for transmission charge pump section (2). Transmission charge pump section (2) sends oil to the hydraulic filter for the transmission charging. Some of the


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