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BOOM AR- 3157241 - Caterpillar



3157241 BOOM AR- Caterpillar parts BOOM
Rating:
11
Alternative (cross code) number:
CA3157241
315-7241
3157241
Caterpillar 3157241 BOOM AR-

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Illustration 12 g01231447
Hold the control lever for the bucket cylinder in the EXTEND position for 5 seconds in order to unlock the hook. A buzzer will sound until the switch is moved to the LOCK position. In order to lift objects with the lifting eye of the quick coupler, refer to "Coupler Lifting Eye Operation without Bucket".
Illustration 13 g01231426
Move the boom and the stick until the tool or the bucket is in the storage position. Keep the tool close to the ground.
Illustration 14 g01231430
Rotate the quick coupler upward in order to release the bottom pin.
Illustration 15 g01231432
Continue to rotate the quick coupler upward in order to release the top pin and completely release the work tool from the quick coupler.
Move the stick to a position that is clear of the work tool. Note: In order to lift objects with the lifting eye of the quick coupler, refer to "Coupler Lifting Eye Operation without Bucket".Coupling a Bucket that is Reversed
Illustration 16 g01231682
When you use a hydraulic pin grabber quick coupler, you can connect to a bucket that is in a reversed position. Refer to Illustration 16 for an example of connecting to a bucket that is in a reversed position.
Illustration 17 g01231266
In order to prevent the blocking bar from jamming, the quick coupler must be curled past a vertical position before you move the switch from the LOCK position to the UNLOCK position. Extend the stick cylinder and 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.
Illustration 18 g01231689
(1) Quick coupler
(2) Bucket
(3) Boss
(4) Hook Coupler Lifting Eye Operation without Bucket
Remove the work tool. Refer to "Uncoupling the Work Tool" for the proper procedure.
Illustration 19 g01231266
In order to prevent the blocking bar from jamming, the quick coupler must be curled past a vertical position before you move the switch from the UNLOCK position to the LOCK position. Extend the stick cylinder and 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.
Illustration 20 g01231447
Hold the control lever for the bucket cylinder in the EXTEND position for 5 seconds after the electric switch has been locked.
Illustration 21 g01231666
Rotate the quick coupler downward and


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