BUCKET AS 5612630 - Caterpillar

Illustration 1 g00879800
Partial hydraulic schematic (1) Bucket cylinder (2) Bucket control valve (3) Main control valve (4) Pilot control valve (Boom and Bucket) (5) Main pump (7) Pilot manifold (A) Oil line for bucket close operation (B) Oil line for bucket dump operation (C) Hydraulic lineBucket Dump
When the pilot valve (joystick) is moved to the right, pilot oil (B) shifts the spool of the bucket control valve (2) downward. Oil is routed from the pump (5) to the main control valve (3). The pump receives oil from the hydraulic tank through the hydraulic line (C). The oil from the main pump flows to the rod end of the bucket cylinder (1) through the bucket control valve. This causes the cylinder rod to retract. The retracting of the bucket cylinder rod causes the bucket to open.Bucket Close
When the pilot valve (joystick) is moved to the left, pilot oil (A) shifts the spool of the bucket control valve (2). Oil is routed from the pump (5) to the main control valve (3). The pump receives oil from the hydraulic tank through the hydraulic line (C). The oil from the main pump flows to the head end of the bucket cylinder (1) through the bucket control valve. This causes the cylinder rod to extend. The extending of the bucket cylinder rod causes the bucket to close.Refer to the Systems Operation, "Main Control Valve" for more information on the main control valve and the bucket control valve.