SHAFT-BEVEL PINION 3065721 - Caterpillar

Ensure that the coupler pins on the quick coupler of the host machine are in the DISENGAGED position. Refer to the Operation and Maintenance Manual of the host machine for details on disengaging the coupler pins.
Enter the host machine.
Close the cab door.
Fasten the seat belt and lower the armrest.
Start the engine.
Disengage the parking brake.
Tilt the quick coupler assembly forward.
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Align the quick coupler assembly (3) between the outer plates (2) of the mounting bracket. Move the quick coupler assembly under the angled plate (1) of the mounting bracket and rack back the work tool.
Fully lower the loader arms.
Tilt the work tool forward until the work tool is slightly off the ground.
Turn the engine start switch key to the OFF position. Raise the armrest and exit the machine.
Engage the manual coupler pins on the quick coupler of the host machine. Refer to the Operation and Maintenance Manual of the host machine for details. Note: If the host machine is equipped with a hydraulic quick coupler refer to Operation and Maintenance Manual, "Operator Controls" of the host machine for details on engaging the coupler pins.
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While the loader arms are fully lowered, visually inspect the quick coupler in order to ensure that the coupler pins (4) are fully extended through the corresponding holes (4A) of the frame mounting bracket. Verify that the coupler pins (4) are engaged before you operate the host machine with the backhoe. Note: It is necessary to release the hydraulic system pressure of the host machine before you connect the hydraulic lines of the work tool to the machine. Refer to the Operation and Maintenance Manual of the host machine for details.
Ensure that the quick connect couplers for the hydraulic hoses are clean on the work tool and the machine. Connect the auxiliary hydraulic lines to the host machine. The case drain line must be connected first in order to avoid problems with hydraulic pressure. Twist the collars of the quick connect couplers for one quarter of a turn in order to secure the hydraulic connections.
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Hydraulic lines with 8 pin electrical plug connection
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Hydraulic lines with 14 pin electrical plug connection
Connect the electrical plug connection in order to enable full High Flow operation. Refer to the Operation and Maintenance Manual, "Operator Controls" of your host machine for additional information on High Flow.
Use the following procedure to verify engagement of the coupler pins.
Enter the machine.
Close the cab door.
Fasten the seat belt and lower the armrest.
Start the engine.
Disengage the parking brake.
Keep the work tool close to the ground.
Activate the tilt control in order to tilt the work tool downward.
Apply downward pressure on the work tool.
Move the machine backward slowly. Ensure that there is no movement between the work tool and the quick coupler assembly. Removing the Work Tool
Disengaging the coupler pins will release the work tool from control of the operator.Serious injury or death may result from disengaging the work tool when it is in an unstable position or carrying a load.Place the work tool in a