GEAR-SUN 7T9369 - Caterpillar

Illustration 1 g03176734
369-9187 Transmission Schematic
(A) From control out
(B) Meet cooler requirement
(C) To transmission lube
(D) 310 L/min (82 US gpm) at 1900 rpm engine speed
(E) Transmission lube
(F) From cooler out
(G) To torque converter inlet
(1) Torque converter with lockup clutch
(2) 134-2252 Temperature Sensor Gp, part of 359-5430 Torque Converter Housing Gp
(3) 148-1928 Inlet Relief Valve
(4) 207-2833 Relief Valve Gp
(5) Sump
(6) 192-1561 Speed Sensor Gp, part of 359-5434 Transmission Hydraulic Control Gp
(7) 192-1561 Speed Sensor Gp, part of 359-5429 Transmission Planetary Gp
(8) 134-2252 Temperature Sensor Gp, part of 359-5434 Transmission Wiring Gp
(9) 318-1850 Gear Pump Gp
(10) 130-6747 Screen As and 348-7790 Tube As, part of 359-5430 Torque Converter Housing Gp
(11) 244-3114 Modulating Valve Gp, part of 359-5430 Torque Converter Housing Gp
(12) 346-7685 Oil Filter Gp
(13) 346-7687 Oil Filter Gp
(14) 304-5687 Electronic Control Module
(15) 6V-3965 Fitting, part of 359-5431 Transmission Case and Parts Gp
(16) 258-8987 Modulating Valve Gp, part of 383-3004 Transmission Hydraulic Control Gp
(17) 308-2995 Relief Valve Gp, part of 383-3004 Transmission Hydraulic Control Gp The power train oil schematic provides the nominal pressures and flows within the CX48-P2300 power train. Illustration 1 shows the hydraulic schematic for all gears.The transmission is controlled and lubricated by oil that is supplied from the sump (5) of the power train hydraulic system by power train oil pump (9).Oil is taken from the sump of the hydraulic system by the oil pump and oil is fed via oil filter (12) and oil filter (13) to the following components:
Modulating Valve (Torque Converter Lockup Clutch)
Modulating Valves (Electronic Clutch Pressure Control)
Transmission Hydraulic Control Relief Valve
Torque ConverterTest points for oil pressure and two oil temperature sensors are incorporated in the hydraulic system.Control of the planetary transmission is achieved by electronically activated modulating valves (16) that allow oil to fill the various clutches in the planetary transmission.Torque converter (1) allows the power to be transmitted smoothly from the engine to the planetary transmission. The torque converter allows the speeds of the engine and the transmission to be matched smoothly. Once the speeds are matched, the modulating valve for the torque converter lockup clutch (11) engages the clutch in the torque converter. The torque converter provides direct drive from the engine to the planetary transmission.Oil is fed to the torque converter and the oil transmits the drive from the engine to the planetary transmission. Outlet oil from the torque converter goes to the oil cooler and forward as lubricant for the transmission.The transmission fluid is critical to the proper operation of the transmission. The transmission oil serves the following functions: proper cooling, clutch lockup, bearing protection, torque converter operation and general overall interior oxidation and wear protection. In order to maintain the cleanliness of the fluid, the oil and filter must be changed as recommended. The transmission oil filter system is designed to meet ISO 18/15 or better.Transmission Features and Identification
Illustration 2 g03177691
CX48-P2300 Transmission
(H) 1049 mm (41.3