416C, 426C, 428C, 436C and 438C Backhoe Loaders Quick Coupler Operation (Backhoe) - Pin Grabber Quick Coupler (If Equipped) Caterpillar

Securing the Work Tool

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Inspect quick coupler engagement before operating the backhoe. Serious injury or death may result from improperly engaged coupler.

Note: AVSpare offers an assortment of coupler and bucket combinations. Refer to the Parts Manual for your machine. The illustrations give accurate views of the couplers and the captions can help resolve problems with compatibility. Also, your AVSpare Dealer can help you determine the proper combinations.

Illustration 1 and illustration 2 may help the operator in order to identify the coupler that is on the machine.

Illustration 1	g00988298
This Quick Coupler is used with High Rotation Linkage and older buckets. (A) 400 mm (15.75 inch)

Illustration 2	g00988327
This Quick Coupler is used with High Rotation Linkage and newer buckets. (B) 345 mm (13.50 inch)

1. Position the work tool on a level surface.

2. Retract the bucket cylinder. Position the quick coupler in alignment between the bosses of the work tool.
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   Illustration 3	g00739365

3. Move the stick inward and lower the stick until the lower boss (1) engages the pivot pin (2) of the work tool.
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   Illustration 4	g00739369

4. Extend the bucket cylinder in order to rotate the quick coupler toward the work tool until the upper boss engages the linkage pin of the work tool.
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   Illustration 5	g00739373

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   Illustration 6	g00739418

5. Install the lock pin on the quick coupler. Install the lynch pin in order to secure the lock pin.

6. Raise the boom or raise the stick. The work tool is locked in place. The work tool is ready to use.

Securing a Work Tool to a AVSpare / Case Coupler

AVSpare offers an assortment of couplers that fit work tools that are produced by other manufacturers. Use the correct coupler and pins for your work tool. Contact your AVSpare Dealer for the correct mounting hardware.

Perform steps 1 to 3 in order to install either a AVSpare bucket or certain Case buckets onto the quick coupler.

Extend the bucket cylinder in order to rotate the quick coupler toward the work tool until the pin hole aligns with the appropriate hole for your bucket.

Illustration 7	g00831042

Install longer pin (5) into hole (4) for a AVSpare bucket. Install shorter pin (6) into hole (3) for a Case bucket.

Securing a Work Tool to a AVSpare / Deere Coupler

AVSpare offers an assortment of couplers that fit work tools that are produced by other manufacturers. Use the correct coupler and pins for your work tool. Contact your AVSpare Dealer for the correct mounting hardware.

Perform steps 1 to 3 in order to install either a AVSpare bucket or certain Deere buckets onto the quick coupler.

Illustration 8	g00831043

Install longer pin (9) into hole (7) for a AVSpare bucket. Install shorter pin (10) into hole (8) for a Deere bucket.

Releasing the Work Tool

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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.

1. Level the work tool on the ground.
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   Illustration 9	g00739418

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   Illustration 10	g00739373

2. Remove the lynch pin from the lock pin and remove the lock pin.
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   Illustration 11	g00739377

3. Retract the bucket cylinder in order to remove the quick coupler from the linkage pin.
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   Illustration 12	g00739384

   Note: If the quick coupler does not release the linkage pin, use the 132-3821 Actuating Lever to release the linkage pin. Push down on the lever in order to release the linkage pin.

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   Illustration 13	g00739367

4. Raise the stick and move the stick away from the machine in order to release the quick coupler from the pivot pin of the work tool.

Releasing a Work Tool From a AVSpare / Case Coupler

Illustration 14	g00831042

Remove pin (5) from hole (4) for a AVSpare bucket. Remove pin (6) from hole (3) for a Case bucket.

Retract the bucket cylinder in order to remove the quick coupler from the linkage pin.

Raise the stick and move the stick away from the machine in order to release the quick coupler from the pivot pin of the work tool.

Releasing a Work Tool From a AVSpare / Deere Coupler

Illustration 15	g00831043

Remove pin (9) from hole (7) for a AVSpare bucket. Remove pin (10) from hole (8) for a Deere bucket.

Retract the bucket cylinder in order to remove the quick coupler from the linkage pin.

Raise the stick and move the stick away from the machine in order to release the quick coupler from the pivot pin of the work tool.