SCREW 2815508 - Caterpillar

Be sure to ground moldboard before retracting centershift lock pin. Failure to ground the moldboard can cause personal injury or death.
Illustration 1 g02164089
(1) Solenoid for the centershift lock (2) Centershift lock cylinderCentershift lock cylinder (2) is located on the rear of the link bar. When the centershift lock cylinder (2) is not engaged, the link bar and the circle can be moved. The link bar and the circle can be moved in order to place the blade in the correct position. When the centershift lock cylinder (2) is engaged, the link bar and the circle will not move sideways.
Illustration 2 g02170233
(3) Centershift lock switchCentershift lock switch (3) is located on the console to the right of the operator. This switch sends an electrical signal to solenoid (1) for the centershift lock. Solenoid (1) will direct oil to either side of centershift lock cylinder (2). The machine is normally operated with the centershift lock pin in the LOCK position. ReferenceFor more information on operation of the centershift lock switch, refer to Operation and Maintenance Manual, "Centershift Lock Switch".The lock pin cannot be seen by the operator. A centershift indicator shows the operator when the lock pin is in alignment with the correct hole in the lock plate. The centershift lock indicator is located on the right side of the link bar.
Illustration 3 g01118324
(1) Solenoid for the centershift lock (2) Centershift lock cylinderImplement pilot oil is directed to the centershift lock when the implement lockout switch is engaged. When solenoid (1) is de-energized, pilot oil will be directed to the head end of the centershift lock cylinder (2). Cylinder (2) will travel to the end of the stroke. The cylinder rod will hold the blade circle in position.
Illustration 4 g01118359
(1) Solenoid for the centershift lock (2) Centershift lock cylinderImplement pilot oil is directed to the centershift lock when the implement lockout switch is engaged. When solenoid (1) is energized, pilot oil will be directed to the rod end of the centershift lock cylinder (2). Cylinder (2) will travel to the end of the stroke. The retracted cylinder rod will release the blade circle from a fixed position.