GUIDE-SEAL 1U5445 - Caterpillar

Illustration 1 g03803265
(1) Main control valve
(2) Travel valve
(3) Main pump
(4) Pilot manifold
(5) Transmission pressure sensor
(6) Solenoid valve (transmission gear select)
(7) Solenoid valve (transmission direction)
(8) Oscillating axle solenoid valve
(9) Swash plate angle solenoid valve
(10) Travel foot pedal sensor
(11) Pilot swivel housing
(12) Transmission
(13) Travel motor
(14) Travel brake valve
(15) Oscillating axle cylinders
(17) Main swivel housing When the travel pedal is depressed for either FORWARD or REVERSE travel, the solenoid valve for travel activation in the pilot manifold sends pilot oil to the travel control valve (2) in main control valve (3). This action directs main pump supply oil to travel motor (13).Depending on the speed that is selected, pilot manifold (4) that contains the transmission shift control and the parking brake control will direct pilot oil in order to release one of the transmission clutches.Both transmission clutches are spring engaged. Mechanical power from the travel motor (13) is directed into transmission (12). Transmission (12) directs the power to the front axle and the rear axle.When the travel pedal position sensor recognizes a value that is different from NEUTRAL, the machine is put into "Travel Mode".
Illustration 2 g03714053
(11) Travel motor
(15) Transmission The travel system consists of the following components: travel motor (13), transmission (12) and two drive axles.Travel motor (13) is equipped with a separate travel brake valve. The two-speed transmission is equipped with two multiple disc clutches which are individually spring applied and hydraulically released.Transmission (12) has a speed sensor that prevents the transmission from being downshifted if the travel speed is above a certain speed.There are two drive axles. One of the drive axles is a fixed drive axle. The other drive axle is a steerable drive axle. Each drive axle consists of a differential gear, individual multiple disc brakes, and planetary final drives.The rear axle is a fixed drive axle. The front axle is a steerable drive axle. The front axle has two universal joints in the drive axles in order to allow full power to each of the wheels during turns.
Illustration 3 g03714091
(13) Travel motor Travel motor (13) is located at the front of the transmission.
Illustration 4 g03714063
Typical example
(4) Pilot manifold
(6) Solenoid valve (transmission gear select)
(16) Manual override Transmission solenoid valve (6) routes pilot oil in order to release either the high speed clutch or the low speed clutch in the transmission. The manual override (16) of transmission valve (6) permits manual operation of the transmission shift.