ADDITIVE-DYE 1U5576 - Caterpillar

Neutral Position
Illustration 1 g03714056
(1) Pilot pump
(2) Control valve group (load sensing, medium pressure)
(3) Control valve group (joystick steering)
(4) Spool
(5) Flow compensator valve (right)
(6) Flow compensator valve (left)
(7) Port A hydraulic line
(8) Port B hydraulic line
(9) Joystick steering valve
(10) Pilot oil line - from first gear solenoid valve
(11) Joystick steering pilot enable valve
(12) Joystick steering enable solenoid valve
(13) Check valve (right travel)
(14) Check valve (left travel)
(15) Shuttle valve
(16) Port A1 hydraulic line
(17) Port B1 hydraulic line
(18) Swivel
(19) Steering cylinder
(20) Tank Joystick Steering
Illustration 2 g03715256
Left console
(A) Switch for joystick steering In order to operate the joystick steering, the following two conditions must apply.
The transmission must be in FIRST GEAR.
Switch (A) must be enabled in order to activate the thumb wheel.When the transmission is shifted to first gear, pilot oil will shift joystick steering pilot enable valve (11) downward.When switch (A) is enabled, joystick steering enable solenoid valve (12) is activated by the command to the gear one solenoid in the pilot manifold. Joystick steering enable solenoid valve (12) is shifted downward by the solenoid.
Illustration 3 g03715261
Right-hand joystick
(B) Left turn
(C) Right turn Note: When the cab is positioned over the fixed rear axle, the function of the joystick steering is reversed. The function of the travel speed pedal is also reversed.When operator moves top switch on the right joystick for turn right (C) position, pressure oil will shift shuttle valve (15) to the right. The oil will then travel through valves (11) and (12) and open check valves (13) and (14). The pressure oil will travel through check valve (13) to the steering cylinder. Return oil will