CAB GP 8W7254 - Caterpillar

Illustration 8 g01352344
(4) Manual Work Tool Coupler
(5) Hydraulic Work Tool Coupler
(6) Lever for the Coupler Pin
(7) Coupler Pins
Visually ensure that both coupler pins are extending out of the holes in the work tool mounting bracket.
Use the following procedure to verify engagement of the coupler pins.
Enter the machine.
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 down pressure on the work tool. Note: The work tool Operation and Maintenance Manual will inform you if forward pressure should not be applied on a work tool.
Move the machine backward. Ensure that the coupler pins do not disengage from the work tool.
Test the work tool for leaks and for proper operation. 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 safe position before disengaging the coupler pins.
Auxiliary hoses for work tools must be disconnected before the quick coupler is disengaged.Pulling the work tool with the auxiliary hoses could result in damage to the host machine or the work tool.
Position the machine on level ground.
Lower the work tool to the ground.
Rack back the work tool until the work tool is slightly off the ground.
Turn the engine start switch key to the OFF position in order to stop the engine.
If the work tool requires hydraulics the hydraulic system pressure must be released. Refer to the section "Releasing the Auxiliary Hydraulic System Pressure".
Perform Step 7 through Step 12 only after you have released the hydraulic system pressure.
Disconnect the auxiliary hydraulic hoses from the machine. Note: If protective caps are available, install protective caps over the quick connect couplers.
If hoses are routed through the hose guide, remove the hoses from the hose guide. Move the hoses to a position that is away from the work tool mounting bracket. Note: Connect the hoses for the work tool together. Connecting the hoses together will reduce the probability of contaminating the hydraulic system. Connecting the hoses together will reduce the buildup of pressure in the hoses. Connecting the hoses together will ease the connection of the hoses to the machine.
If the work tool is equipped with an electrical line, then disconnect the wire harness from the connector on the machine. If protective caps are available, install protective caps over the electrical connectors.
If the auxiliary electrical line is routed through the hose guide, remove the line from the hose guide. Move the auxiliary electrical line to a position that is away from the work tool mounting bracket.
If the work tool is equipped with a water line, then disconnect the water line from the connector on the machine. Move the water line to a position that is away from the work tool mounting bracket.
Exit the machine. Note: If you are removing a material handling arm that