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ADAPTER-SPLI 5088223 - Caterpillar

5088223 ADAPTER-SPLI Caterpillar parts ADAPTER
Alternative (cross code) number:
Caterpillar 5088223 ADAPTER-SPLI

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Torque Converter, Transmission Pump, Screen and Filter
A crescent pump provides the oil for the operation and the cooling of the transmission and torque converter. The pump also delivers oil for lubrication of the transmission and torque converter. The pump is located at the transmission input shaft. The torque converter stator support is assembled with the pump. This assembly is then bolted to the transmission case. The pump is driven by the torque converter impeller housing.The oil reservoir for the transmission and for the torque converter is on the bottom of the transmission case. The oil flows from the reservoir to the screen. The oil then flows through a transmission case passage to the suction side of the positive displacement pump. The oil from the pump flows to the filter and the oil from the pump then flows to the transmission hydraulic controls. A restriction in the oil filter or high viscosity oil will open a relief valve. The flow of oil will travel back to the sump of the transmission.
Illustration 1 g01452426
If the pressure differential of the inlet oil pressure to the oil filter (1) is 250 30 kPa (36 4 psi) higher than the outlet oil pressure, the oil filter bypass valve will open.When the oil does not flow through the oil filter element, unfiltered oil could cause damage to other components in the transmission oil system.Correct maintenance must be used in order to make sure that the element does not become plugged and the element does not stop the flow of clean oil to the transmission oil system. The filter is mounted to the left side of the transmission case.The screen is mounted inside the transmission case. The screen can be removed on the right side of the case.Power Train Oil Cooler
Illustration 2 g01211005
The transmission oil cooler is mounted on the front of the radiator.High temperature oil from the transmission system flows from the torque converter outlet to the transmission oil cooler. As oil is flowing through the core assembly, air is flowing around the core assembly. In this way, heat is removed from the oil.After the oil flows through the cores of the transmission oil cooler, the oil flows through the outlet passage of the core assembly. The oil now has a lower temperature. The cooler oil returns to the transmission in order to provide lubrication and cooling.Transmission Lubrication System
Illustration 3 g00757665
The following components are lubricated by pressure in the transmission: forward shuttles, reverse shuttles, discs, plates and bearings. After the oil has been cooled by the oil cooler, the oil will flow through an internal passage on the right side of the transmission case and flow to the right end of the input shaft. The cooled oil flows through the oil passages in the input shaft assembly. The cooled oil provides lubrication for the bearings, plates, and discs.Splash lubrication keeps the other gears and bearings oiled. The movement of the gears in the oil reservoir causes oil to be thrown on all components.

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