TM 5-3805-291-23-1
THEORY OF OPERATION - CONTINUED
0003 00
ELECTRO-HYDRAULIC SYSTEM - CONTINUED
427-C1812
e.
Above illustration represents an interpretation by implement ECM of signal from lift lever when joystick is in
LOWER position. As joystick is moved away from center, no current is supplied to solenoid valve until joystick is
approximately three degrees from center. At approximately three degrees of travel, implement ECM supplies Start
of Modulation Current (3) to lower solenoid. As joystick is moved toward detent, current supplied to lower sole-
noid increases. Increase is linear up to Lower Maximum Modulation Current (4). Maximum modulation current is
reached just before joystick enters detent position. As position sensor is moved into detent position, implement
ECM will increase current. Current will increase until pilot pressure shifts main valve into FLOAT position.
0003 00-142
