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LINK AS-TRACK 2389950 - Caterpillar



2389950 LINK AS-TRACK Caterpillar parts LINK
Rating:
16
Alternative (cross code) number:
CA2389950
238-9950
2389950
Caterpillar 2389950 LINK AS-TRACK
Weight: 1230 pounds 557 kg.

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Front Brake Cooling
Illustration 1 g01204495
(1) Front brake oil cooler
Illustration 2 g01204594
(2) Front brake diverter valve Front brake oil cooler (1) is located behind the engine and above the torque converter. Engine coolant from the water pump flows through the front brake oil cooler. Then, the engine coolant flows back to the cylinder block.The front brakes are cooled by oil. The cooling oil comes from the parking and secondary brake valve and from the hoist control valve. Cooling oil is also supplied from the brake cooling pump that is located inside the hydraulic tank.
Illustration 3 g01207802
(3) Brake cooling hydraulic filters The oil flows from the hoist and front brake cooling gear pump to the hoist control valve. When the hoist control valve is in the HOLD position or in the FLOAT position, the oil flows through the hoist control valve to brake cooling hydraulic filters (3). Then, the oil flows to front brake cooling diverter valve (2 ).Oil from the parking brake release pump section flows into the parking and secondary brake valve. If the relief valve is opened, the bypass oil flows to brake cooling hydraulic filters (3). Then, the oil flows to front brake cooling diverter valve (2).When the service brakes are applied or when the retarder is used, the front brake cooling diverter valve (2) will send the oil through front brake oil cooler (1). When the brakes are not needed, front brake cooling diverter valve (2) will send the oil through the oil cooler bypass. In either situation, the oil will then flow to the front brakes. After the oil flows to the front brakes, the oil will return to the hydraulic oil tank.The front brake cooling circuit has an oil cooler relief valve in the hoist control valve and on the brake cooling pumps that are located in the hydraulic tank. The brake oil cooler relief valve prevents excessive pressure. If the relief valves for the front brake cooling pump are open, oil will flow back to the hydraulic oil tank. If the relief valves for the front brake cooling pump are closed, oil flows through filter (3) to the front brake oil cooler (1).Auxiliary Brake Oil Cooler (If Equipped)
Illustration 4 g01204637The auxiliary brake oil cooler is mounted behind the left front strut. If the machine is equipped with the additional retarding attachment, additional brake cooling is required. The auxiliary brake oil cooler receives flow from the front brake oil cooler screen. After leaving the cooler, the oil flows to the brake cooling manifold. This manifold is mounted above the front brake oil cooler. The oil then flows to the front brake packs.Rear Brake Cooling
Illustration 5 g01204618
Rear brake oil coolers
(1) Rear brake oil coolers
(2) Screens Rear brake oil coolers (1) are located on the right frame rail in front of the hydraulic tank. Engine coolant from the water pump flows through rear brake oil coolers (1). Then, the engine coolant flows back to the cylinder block.The rear brakes are cooled by oil. The cooling oil comes from the brake


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