PISTON PACK GP 0R9881 - Caterpillar

Illustration 17 g01827880
When you use a hydraulic pin grabber quick coupler, you can connect to a bucket that is in a reversed position. Refer to Illustration 17 for an example of connecting to a bucket that is in a reversed position.
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Before you move the switch from the LOCK position to the UNLOCK position, extend the bucket cylinder until the quick coupler is curled past a vertical position.
Follow the same steps for coupling the work tool in order to couple the host machine to a bucket that is reversed. Refer to "Coupling the Work Tool" for the proper procedure.
When some Caterpillar buckets are used in the reverse position, it can be more difficult to couple the bucket and uncouple the bucket than in the normal position.Care must be taken to ensure that the position of the boom, stick, and bucket are aligned to ensure smooth coupling. The coupler must be in position between the bucket bosses.If the bucket is not fully engaged in the jaw of the coupler, the quick coupler can become snagged on the bucket bosses. The full weight of the bucket is then carried by the quick coupler sideplates, which can cause damage to the quick coupler.
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(1) Quick coupler
(2) Bucket
(3) Boss
(4) Hook Coupler Lifting Eye Operation without Bucket
Only use the lifting eye on the quick coupler as a lifting device. Do not use the front jaw or the secondary hook as a lifting device. Chains, cables, straps, or other lifting devices should only be attached to the lifting eye on the quick coupler.Remove the work tool from the quick coupler before attaching a lifting device to the lifting eye on the quick coupler.
Remove the work tool. Refer to "Uncoupling the Work Tool" for the proper procedure.
Illustration 20 g01827776
Before you move the switch from the LOCK position to the UNLOCK position, extend the bucket cylinder until the quick coupler is curled past a vertical position.
Pull the switch outward and move the switch to the LOCK position. The buzzer will no longer sound.
Always confirm that the buzzer sounds when switch is in the UNLOCK position. If no sound is heard while in this condition, place the work tool in a stable and safe position and turn off the machine. Consult your Cat dealer.
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Hold the control lever for the bucket cylinder in the EXTEND position for 5 seconds after the electric switch has been locked. The secondary lock on the quick coupler will fully close to the LOCK position. The secondary lock is clearly visible from the cab.
Illustration 22 g01827886
Rotate the quick coupler downward and move the stick to a position that is clear of the work tool.
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Use the lifting eye of the quick coupler, as needed.
In order to reinstall the bucket or the work tool, refer to "Coupling the Work Tool" for the proper procedure. Lifting Objects
To prevent injury, do not exceed the rated load capacity of the machine. If the machine is not on level ground, load capacities will vary.
Refer to the load charts in the