GSH15 and GSH20 Orange Peel Grapples Caterpillar

Installation Procedure

Grapple with Original Rotator Group

Illustration 1	g01155439
Shells open.

Illustration 2	g01155861
Shells closed.

1. Place the grapple on a surface that is firm and level.

2. Clean the bore of the crosshead. Clean the pin that is used to mount the grapple.

3. Move the host machine to the grapple.

4. Clean the bore in the stick of the host machine.

5. Align the bore of the crosshead of the grapple with the bore in the stick of the host machine.

6. Coat the pin with grease before you install the pin.

7. Install the mounting pin into the bore of the stick and the bore of the crosshead. Lock the pin.

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Personal injury or death can result from escaping fluid under pressure. Escaping fluid under pressure, even a very small pin-hole size leak, can penetrate body tissue and cause serious injury and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury. Always use a board or cardboard when checking for a leak.

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Check valves in the hydraulic system may allow pressure to exist in the hydraulic lines after the engine has been stopped. Pressure must be relieved prior to servicing the components of the hydraulic system. Failure to relieve pressure prior to servicing may result in personal injury.

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NOTICE
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates.

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Illustration 3	g01154697
H2X (P1) Open (P2) Close (P3) Rotate counterclockwise (P4) Rotate clockwise

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Illustration 4	g01154700
H2Y (P1) Open (P2) Close (P3) Rotate counterclockwise (P4) Rotate clockwise

Note: In order to operate the GSH grapple, the host machine must have two hydraulic functions that are operated independently. The hydraulic control for the bucket cylinder may be used in order to operate the grapple.

8. Clean all of the hydraulic fittings before you connect the hydraulic lines.

9. Connect the hydraulic lines between the host machine and the grapple. Open all of the ball valves for the hydraulic system.

10. Purge the air from the hydraulic system. In order to purge the air from the jaw circuit, open the grapple and close the grapple four times. Do not apply any pressure to the grapple at this time. The air that may be in the system will be purged into the hydraulic tank.

11. Purge the air from the hydraulic system. In order to purge the air from the rotate circuit, rotate the GSH grapple for 10 complete revolutions. The air that may be in the system will be purged into the hydraulic tank.

Grapple with Rotator Group Modification

Illustration 5	g01306681

Note: Before installing the work tool for the first time, lubricate the rotator gear. After the initial lubrication of the rotator gear, refer to the Operation and Maintenance Manual, "Maintenance Interval Schedule" for additional maintenance intervals.

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Illustration 6	g01307009
Shells open.

1. Place the grapple on a surface that is firm and level.

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Illustration 7	g01309249
(1) Link assembly (2) Stick (3) Pin assembly (4) Boss

2. Clean the upper bore on link assembly (1) .

3. Clean the bore in stick (2) on the host machine.

4. Clean the pin assembly (3) that is used in order to mount link assembly (1) onto stick (2) on the host machine.

5. Align the upper bore of link assembly (1) with the bore in stick (2) on the host machine.

   Note: Boss (4) must be positioned on the right side of stick (2) when link assembly (1) is viewed from the cab of the host machine.

6. Coat pin assembly (3) with grease before the pin assembly is installed.

7. Install pin assembly (3) into the bore in the stick (2) and the upper bore of the link assembly (1) .

8. Lock the pin assembly (3) into boss (4). Secure pin assembly (3) with washer and bolt.

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Illustration 8	g01309250
(1) Link assembly (5) Grapple (6) Head assembly (7) Pin (8) Washer (9) Nut (10) Cotter pin

9. Move the host machine and link assembly 1 to grapple (5) .

10. Clean the lower bore on link assembly (1) .

11. Clean the bore on head assembly (6) .

12. Clean pin (7) that is used to mount the grapple (5) onto the link assembly (1) .

13. Align the lower bore on link assembly (1) with the bore on head assembly (6) .

    Note: When you install the grapple onto the stick, the motor must be positioned away from the host machine.

14. Coat pin (7) with grease before you install the pin.

15. Install pin (7) into the lower bore on link assembly (1) and the bore on head assembly (6) .

16. Install washer (8) and nut (9) onto pin (7). Tighten nut (8) .

17. Install cotter pin (10) through nut (9) and the hole in pin (7). Bend the cotter pin.

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Personal injury or death can result from escaping fluid under pressure. Escaping fluid under pressure, even a very small pin-hole size leak, can penetrate body tissue and cause serious injury and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury. Always use a board or cardboard when checking for a leak.

Show/hide table

Check valves in the hydraulic system may allow pressure to exist in the hydraulic lines after the engine has been stopped. Pressure must be relieved prior to servicing the components of the hydraulic system. Failure to relieve pressure prior to servicing may result in personal injury.

Show/hide table

NOTICE
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates.

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Illustration 9	g01306993
H2X (P1) Open (P2) Close (P3) Rotate counterclockwise (P4) Rotate clockwise

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Illustration 10	g01306999
H2Y (P1) Open (P2) Close (P3) Rotate counterclockwise (P4) Rotate clockwise

Note: In order to operate the GSH-H grapple, the host machine must have two hydraulic functions that are operated independently. The hydraulic control for the bucket cylinder may be used in order to operate the grapple.

18. Clean all of the hydraulic fittings before you connect the hydraulic lines.

19. Connect the hydraulic lines between the host machine and the grapple. Open all of the ball valves for the hydraulic system.

20. Purge the air from the hydraulic system. In order to purge the air from the jaw circuit, open the grapple and close the grapple four times. Do not apply any pressure to the grapple at this time. The air that may be in the system will be purged into the hydraulic tank.

21. Purge the air from the hydraulic system. In order to purge the air from the rotate circuit, rotate the GSH-H grapple for 10 complete revolutions. The air that may be in the system will be purged into the hydraulic tank.

Removal Procedure

Grapple with Original Rotator Group

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Illustration 11	g01155439
Shells open.

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Illustration 12	g01155861
Shells closed.

1. Before you remove the grapple, place the grapple on a surface that is solid and level. Refer to Illustration 11 or refer to Illustration 12 for the position of the grapple before you remove the grapple from the host machine. You must ensure that the grapple will not move when you remove the host machine.

2. Stop the engine of the host machine. Purge the hydraulic system of any residual pressure.

3. Close the ball valves on the stick of the host machine.

4. Clean all of the hydraulic fittings.

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Check valves in the hydraulic system may allow pressure to exist in the hydraulic lines after the engine has been stopped. Pressure must be relieved prior to servicing the components of the hydraulic system. Failure to relieve pressure prior to servicing may result in personal injury.

Show/hide table

NOTICE
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates.

5. Remove all of the connecting lines between the host machine and the grapple. Plug the fittings or cap the fitting.

Note: You must ensure that the crosshead will not move when you remove the pin.

6. Remove the pin from the end of the stick of the host machine and the crosshead.

7. Start the engine of the host machine. Slowly move the stick of the host machine from the crosshead and the grapple.

8. Coat the bore of the grapple with grease.

Grapple with Rotator Group Modification

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Illustration 13	g01307009
Shells open.

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Illustration 14	g01307010
Shells closed.

1. Before you remove the grapple, place the grapple on a surface that is solid and level. Refer to Illustration 13 or refer to Illustration 14 for the position of the grapple before you remove the grapple from the host machine. You must ensure that the grapple will not move when you remove the host machine.

2. Stop the engine of the host machine. Purge the hydraulic system of any residual pressure.

3. Close the ball valves on the stick of the host machine.

4. Clean all of the hydraulic fittings.

Show/hide table

Check valves in the hydraulic system may allow pressure to exist in the hydraulic lines after the engine has been stopped. Pressure must be relieved prior to servicing the components of the hydraulic system. Failure to relieve pressure prior to servicing may result in personal injury.

Show/hide table

NOTICE
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates.

5. Remove all of the connecting lines between the host machine and the grapple. Plug the fittings or cap the fitting.

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Illustration 15	g01309250
(1) Link assembly (5) Grapple (6) Head assembly (7) Pin (8) Washer (9) Nut (10) Cotter pin

6. Remove cotter pin (10) from nut (9) .

7. Remove nut (9) and washer (8) from pin (7) .

8. Remove pin (7) from the lower bore on link assembly (1) and the bore on head assembly (6) .

9. Enter the host machine. Start the engine of the host machine.

10. Slowly move the host machine and link assembly (1) away from grapple (5) .

11. Lower link assembly (1) to a surface that is solid and level.

12. Stop the engine of the host machine. Exit the host machine.

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Illustration 16	g01309249
(1) Link assembly (2) Stick (3) Pin assembly (4) Boss

13. Remove the washer and bolt that secure pin assembly (3). Unlock pin assembly (3) from boss (4) .

Note: You must ensure that the link assembly (1) will not move when you remove pin assembly (3) .

14. Remove pin assembly (3) from the bore in the stick (2) and the upper bore of the link assembly (1) .

15. Enter the host machine. Start the engine of the host machine.

16. Slowly move the host machine away from link assembly (1) .

17. Stop the engine of the host machine. Exit the host machine.

18. Clean all parts.

19. Install pin assembly (3) in the upper bore of link assembly (1) and lock into boss (4). Install the washer and the bolt in order to secure pin assembly (3) in the upper bore of link assembly (1) for storage.

20. Install pin (7), washer (8), nut (9), and cotter pin (10) in the lower bore on link assembly (1) for storage.

21. Store the grapple and store the link assembly. Refer to Operation and Maintenance Manual, "Storage" for additional information.