WASHER WA721031 - Caterpillar

Quick Coupler Function (if Equipped)
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 safe position before disengaging the coupler pins.
Inspect the quick coupler engagement before operating the machine.Serious injury or death may result from improperly engaged coupler.
Crush injury. Could cause serious injury or death. Always confirm that the quick coupler is engaged onto the pins. Read the Operator's Manual.
If your machine is equipped with the Fusion coupler, refer to the Operation and Maintenance Manual for the “Fusion Quick Coupler” for detailed operation information.Coupling the Work Tool
Front Work Tool Coupler for Tools That Do Not Require Hydraulics
Position the bucket or the work tool on a level surface.
Toggle the Quick Coupler switch to disengage the coupler pins. An audible alarm will sound to alert the operator of disengaged pins.
Tilt the coupler assembly forward. Make sure that the coupler assembly is below the level of the hooks on the work tool that will be attached.
Slowly, drive the machine forward. Align the hooks on the work tool with the coupler assembly.
Pull back on the lift lever in order to raise the coupler slightly. Raise the coupler until the coupler assembly contacts the hooks on the work tool and the work tool is lifted slightly. Make sure that the work tool is level from one side to the other side.
Tilt back the coupler assembly until the alignment bar of the work tool contacts the coupler.
Toggle the Quick Coupler switch to engage the coupler pins. Note: Visually ensure that both coupler pins are extending out of the holes in the work tool mounting bracket. Ensure that the tool is firmly attached and continue with steps 8 through 10.
Push the tilt lever in order to tilt the work tool downward.
Push the lift lever forward in order to put down pressure on the work tool.
Back up the machine and make sure that there is no movement between the work tool and the coupler. Steps 8 through 10 indicate that the coupler pins have fully engaged into the retainer holes for the work tool.Note: Operating instructions for specific work tools are not provided. The function of the control lever is dependent upon the installation of an Auxiliary Equipment Manufacturer work tool.Work Tools That Require Hydraulics
Follow the procedure that is described in Operation and Maintenance Manual, "Front Work Tool Coupler for Tools That Do Not Require Hydraulics".
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Quick disconnect fittings
Before you connect the quick disconnect plugs or before you disconnect the quick disconnect plugs, follow the steps below.
Stop the engine.
Move all of the control levers for the work tool in order to relieve the pressure in the hydraulic lines. Refer to “System Pressure Release” in the maintenance section of this Operation and Maintenance Manual
Return all of the levers to the HOLD position.
In order to connect the lines, push the fitting and push down on the external