PISTON & ROD GP 2351844 - Caterpillar

Securing the Work Tool
Inspect the coupler wedge engagement before you operate the excavator.Serious injury or death may result from an improperly engaged coupler.Inspect coupler wedge engagement from the cab by rotating the bucket or the work tool inward. Extend the bucket cylinder to bring the coupler actuator into view and bring the stick in until the wedges are visible.
Illustration 1 g00104707
Position the work tool on a level surface.
Retract the bucket cylinder. Position the quick coupler in alignment between the hinges of the work tool.
Illustration 2 g00104708
(1) Lower bosses
(2) Hinges
Move the stick forward and raise the stick until the lower bosses (1) engage the hinges (2) of the work tool.
Illustration 3 g00877372
Pull up on the switch and move the switch for the quick coupler to the UNLOCKED position in order to extend the wedge. The switch for the quick coupler is located on the right side of the operator. Note: Whenever the wedge is extended, a warning alarm will sound. When the switch for the quick coupler is moved to the LOCKED position in order to retract the wedge, the warning alarm will stop.
Illustration 4 g00104709
(3) Center bosses
(4) Locking area
Extend the bucket cylinder in order to rotate the quick coupler toward the work tool. Center bosses (3) must engage with the cut-out of the hinge.
Move the switch for the quick coupler to the LOCKED position in order to retract the wedge. The springs in the quick coupler will move the wedge into the locking area (4).
Illustration 5 g00104710
Raise the boom or raise the stick. The work tool is locked in place. The work tool is ready to use. Releasing the Work Tool
Place the work tool or bucket in a safe position before disengaging the coupler. Disengaging the coupler will release the work tool or bucket from control of the operator.Serious injury or death may result from disengaging the work tool or bucket when it is in an unstable position or carrying a load.
Illustration 6 g00104711
Level the bucket or level the work tool on the ground.
Illustration 7 g00877372
Pull up on the switch and move the switch to the UNLOCKED position in order to extend the wedge. The switch for the quick coupler is located on the right side of the operator. Note: Whenever the wedge is extended, a warning alarm will sound. When the switch for the quick coupler is returned to the LOCKED position in order to retract the wedge, the warning alarm will stop.
Illustration 8 g00104713
Retract the bucket cylinder in order to move the quick coupler toward the machine.
Move the switch for the quick coupler to the LOCKED position in order to retract the wedge.
Illustration 9 g00104714
Lower the stick and move the stick toward the machine in order to disengage the quick coupler.