Pin Grabber Quick Hitch Caterpillar

Installation Procedure

Perform this procedure as the procedure is described in the following steps:

Ensure that the quick coupler is compatible with the host machine. For more information, consult your Caterpillar dealer.

In order to provide a stable operating condition, the host machine must be on flat, level ground. The host machine must be blocked in order to prevent inadvertent movement.

The quick coupler must be supported in order to prevent inadvertent movement. Position the quick coupler in order to prevent unnecessary climbing and unnecessary bending.

Optimum alignment of the bores will prevent the use of unnecessary force when you install the pins. Never check the alignment of the bores with your fingers. Use the proper tools in order to check the alignment of the bores.

A retaining pin can fly out when the retaining pin is struck with force. The area must be clear of people when you drive retaining pins.

When you strike objects, chips and other debris can fly. Before striking any object, make sure that no one can be injured by the flying debris. Always wear safety glasses.

1. Before you install the coupler on the host machine with a D linkage, you must measure the diameter of the pins that are on the work tool. If the pins are not the same size, you must use sleeves on the smaller pin. In order for the coupler to work properly, the pins must be the same size. Refer to Table 2 for the linkages, the part number of the sleeve, and the quantity of sleeves that are required for the installation.
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   Table 1

   Sleeves for the Pins on the Work Tools
   Linkage	Part Number and Name	Quantity
   D	201-4802 Sleeve	2

   Use the sleeves when the bucket is in the front shovel configuration.

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Illustration 1	g01188281

2. Position the quick coupler on the ground in front of the host machine. Make sure that the hook is oriented away from the machine. Align the quick coupler with the end of the stick.
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   Illustration 2	g00604928

   1. Place the O-Ring Seals (1) just over the edge of the main frame of the coupler.
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   Illustration 3	g00604930

   2. Slowly lower the stick into the main frame of the coupler. This will slowly pull the O-Ring Seals (2) into the proper position.

   3. Continue to lower the stick into the main frame of the coupler. Check that the O-Ring Seals do not enter the pin bore in the main frame of the coupler.
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   Illustration 4	g00604931

   4. Lower the stick completely until the pin bores on the main frame of the coupler and the pin bores on the stick align.

      Note: Repeat the same procedure for the power link.

3. Install the mounting pins. Refer to the Operation and Maintenance Manual of the host machine in order to verify the correct procedure for your machine.

4. Lubricate all of the mounting points.

5. Connect the hydraulic lines to the quick coupler. Refer to the Testing and Adjusting Section, "Hydraulic System Air - Purge" before operating the quick coupler.

Removal Procedure

1. Position the quick coupler on the ground in front of the machine.

2. Release the pressure from the hydraulic lines.

   1. Stop the engine on the host machine.

   2. Turn the ignition to the ON position without starting the engine.

   3. Place the hydraulic activation control lever in the UNLOCK position.

   4. Move the electric switch for the quick coupler to the UNLOCK position.

   5. Move the hydraulic control levers repeatedly through the full range of travel. This will relieve any pressure that may be present in the hydraulic system.

   6. Turn the ignition to the OFF position.

   7. Return the hydraulic activation control lever to the LOCK position.

   8. Release the pressure in the host machine's hydraulic tank. Refer to the Operation and Maintenance Manual of the host machine for the correct procedure.

3. Disconnect the hydraulic lines. Plug the ends of the hydraulic lines or connect the hydraulic lines together.

4. Remove the pins from the quick coupler.