TM   5-3805-258-24-1 H  Y  D  R  A  U  L  I  C   S  Y  S  T  E M S  Y  S  T  E  M  S       O  P  E  R  A  T  I  O N The lift kickout is electric and its action moves the lift control lever from the detent on the RAISE posi- tion to the HOLD Position just before the lift arms get to the top of their travel. When the rods in the lift cylinders, that move the lift arms, get near their full extension, magnet (1) on the  left  side  lift  arm  (2)  goes  toward  holder  (4). Switch (3), in holder (4) on the loader frame, is a solid  state  switch.  The  magnet  (field)  closes  the switch to make a ground in the switch. The ground is for the circuit of lift kickout solenoid (8). As the lift arms are moved higher, magnet (1) moves under switch (3) and the magnet (field) closes the circuit in the  switch,  for  solenoid  (8).  Now  that  solenoid  (8) has a closed circuit, the solenoid activates and pulls the roller away from detent (5). With no roller in the detent to keep the lift control lever in the RAISE position, the spring in the pilot valve moves the lift stem and the lift control lever to the HOLD position. With the lever and lift stem in the HOLD position, the movement of the lift cylinder rods stop before the pistons on the rods hit the ends of the lift cylinders. C O N T R O L      L E V E R S      A N D      L I N K A G E I N     H O L D     P O S I T I O N 5.   Detent   for   lift   and   float.   6.   Detent   for   tilt   back.   7.   Spring (for    lift    detent    roller.)    8.    Lift    kickout    solenoid.    9.    Bucket positioner solenoid. When magnet (1) closes the circuit in switch (3), it is not closed very long and the circuit for lift kickout solenoid (8) is again open. The solenoid releases the roller when the circuit is open. Now, spring (7) will move the roller into detent (5), to hold the lift control lever in a position, when it is moved to either RAISE or FLOAT position. Magnet (1) must move away from switch (3) and then be moved under switch (3) again to close the switch (circuit), but only for ap- BUCKET POSITIONER The bucket positioner is electric. Its action moves the tilt control lever from the detent on the TILT BACK position to the HOLD position at the correct angle to dig as the bucket moves from dump to tilt back. P A R T S     T O     A C T I V A T E     T H E     B U C K E T     P O S I T I O N ER ( T Y P I C A L) 1.    Rod.    2.    Magnet    assembly    (on    tilt    lever    arm).    3.    Tilt cylinder.   4.   Electric   switch   (in   cover   assembly   on   the   tilt c y l i n d e r ) . The rod moves farther out of the tilt cylinder to move the bucket away from dump to bucket tilt back. When rod (1) moves out of tilt cylinder (3), magnet (2) on the tilt lever goes toward bucket positioner switch  (4).  Switch  (4),  in  the  bucket  positioner switch assembly on tilt cylinder (3), is a solid state switch. In one direction (toward tilt back), the mag- net (field) closes the switch to make a ground for the solenoid  circuit.  In  the  other  direction  (toward dump), the magnet (field) opens the switch to open the  circuit  (no  ground). As the tilt cylinder rod moves the bucket from dump toward tilt back, magnet (2) moves almost past switch (4) and the magnet (field) closes the circuit for bucket positioner solenoid (9). Now that solenoid (9) has a closed circuit, the solenoid activates and pulls the roller away from detent (6). With no roller in the detent to keep the tilt control lever in TILT BACK position, the spring in the pilot valve moves the valve stem and the tilt control lever to the HOLD position. Now, the movement of the tilt cylinder rod stops and the movement of the bucket stops at the correct angle to dig. Solenoid (9) keeps activated and there is no detent for the TILT BACK position of the tilt control lever. The lever must be held in any position except HOLD. When the rod moves into the tilt cylinder to move the bucket from tilt back to dump, magnet (2) moves past switch (4). The magnet (field) opens the circuit to solenoid (9) when it passes switch (4) and the proximately  one-half  second. solenoid is not activated. Now, when the tilt control 3-110