Procedure to install 315-6321, 315-6323 Coupler Lines Group on Certain Wheel Loaders {5057, 6129} Caterpillar

Wheel Loader

966G Series II (S/N: ANT1-UP; ANZ1-UP)

966H (S/N: A6D1-UP)

972G Series II (S/N: AWP1-UP; ANY1-UP)

972H (S/N: A7D1-UP)

Work Tool

QUICK COUPLER (S/N: ARJ1-UP)

Introduction

This Special Instruction is for the installation of 315-6321 315-6323 Coupler Lines Group. The 315-6321 Coupler Lines Group is for the standard lift. The 315-6323 Coupler Lines Group is for the high lift. If you need more information about the installation of the kit on your machine, consult your Caterpillar dealer.

Do not perform any procedure or order any parts until you understand the information that is contained in this document.

Note: Before you perform the steps below, ensure that the Work Tool is compatible to the host machine. Consult your Caterpillar dealer for more information.

Safety Section

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Personal injury or death can result from fumes, gases and ultraviolet rays from the weld arc. Welding can cause fumes, burn skin and produce ultraviolet rays. Keep your head out of the fumes. Use ventilation, exhaust at the arc, or both, to keep fumes and gases from your breathing area. Wear eye, ear and body protection before working. Protect yourself and others; read and understand this warning. Fumes and gases can be dangerous to your health. Ultraviolet rays from the weld arc can injure eyes and burn skin. Electric shock can cause death. Read and understand the manufacturer's instructions and your employer's safety practices. Do not touch live electrical parts. See "American National Standard Z49.1, Safety in Welding and Cutting" published by the American Welding Society. American Welding Society 2501 N.W. 7th Street Miami, Florida 33125 See "OSHA Safety and Health Standards, 29 CFR 1910", available from U.S. Department of Labor. U.S. Department of Labor Washington, D.C. 20210

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Personal injury can result from flame cutting or welding on painted areas. The effect of gasses from burned paint is a hazard to the person doing the cutting or welding. Do not flame cut or weld on painted areas.

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Do not operate or work on this machine unless you have read and understand the instructions and warnings in the Operation and Maintenance Manuals. Failure to follow the instructions or heed the warnings could result in injury or death. Contact your Cat dealer for replacement manuals. Proper care is your responsibility.

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Personal injury or death can result from sudden work tool movement. Sudden movement of the work tool can cause injury to persons near the work tool. To prevent injury or death, make sure that the area around the work tool is clear of personnel and obstructions before operating the work tool.

Illustration 1	g00104545

Attach a "Do Not Operate" warning tag or a similar warning tag to the start switch or controls before you service or repair the equipment. These warning tags (Special Instruction, SEHS7332) are available from your Caterpillar dealer.

Installation Procedure for the 315-6321 Quick Coupler Supply Kit for Standard Lift

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Illustration 2	g01453929

1. Disconnect hoses (2) from elbows (1) and from tubes (5).

2. Remove four bolts (4) and washers.

3. Remove clips (3).

4. Disconnect tubes (5) from ball valves (7).

5. Remove four bolts (6) and washers. Save these parts for reassembly.

6. Remove plate (7) with the ball valves.
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   Illustration 3	g01476672

7. Remove tapped blocks (8) from the left-hand lift arm.
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   Illustration 4	g03587619
   (B) 139 ± 2 mm (5.47 ± 0.08 inch) (C) 25 ± 3 mm (0.98 ± 0.12 inch) (D) 90 ± 3 mm (3.54 ± 0.12 inch) (E) 721 ± 3 mm (28.39 ± 0.12 inch) (F) 351 ± 3 mm (13.82 ± 0.12 inch) (9) 9C-4935 Plate (10) 163-9662 Weld Boss

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   NOTICE
   Before carrying out arc welding on the machine or on any equipment attached to the machine, disconnect all power and ground leads from the batteries in order to avoid possible damage to electronic components.

8. Position tapped blocks (9) that are supplied in the kit. Weld tapped blocks (9) in place with a 6 mm (0.24 inch) weld along the entire length of each side (A).

9. Position tapped boss (10) that is supplied in the kit. Weld tapped boss (10) in place with a 6 mm (0.24 inch) weld around the entire circumference of the tapped boss.
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   Illustration 5	g03587617
   (G) 75 ± 3 mm (2.95 ± 0.12 inch) (H) 260 ± 3 mm (10.24 ± 0.12 inch) (11) 9R-2613 Weld Boss

10. Position tapped boss (11) that is supplied in the kit. Weld tapped boss (11) in place with a 6 mm (0.24 inch) weld around the entire circumference of the tapped boss.
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    Illustration 6	g06200478

11. Position plate (7) with the ball valves onto tapped blocks (9). Install four bolts and washers (6).

12. Route new hoses (12). Connect hoses (12) to elbows (1) and to the ball valves on plates (7).

13. Attach with clips (13 and 14), bolts (15) and washers (16) that are supplied in the kit. Use the existing bosses on the lift arm and the boss on the cross member.

14. Tighten all fittings and hardware.

Installation Procedure for the 315-6323 Quick Coupler Supply Kit for High Lift

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Illustration 7	g01451598

1. Remove two bolts (5) and washers.

2. Remove clips (3).

3. Disconnect tube (2) and tube (4) from tubes (1) and from ball valves (7).

4. Remove four bolts (6) and washers. Save these parts for reassembly.

5. Remove plate (7) with the ball valves.
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   Illustration 8	g01451667

6. Remove tapped blocks (8) from the left-hand lift arm.

7. Remove tapped blocks (9) from both lift arms.

8. Remove guard plate (10) from both lift arms.
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   Illustration 9	g03587946
   (A) 20 ± 3 mm (0.79 ± 0.12 inch) (B) 139 ± 2 mm (5.47 ± 0.08 inch) (C) 150 ± 3 mm (5.91 ± 0.12 inch) (D) 100 ± 3 mm (3.94 ± 0.12 inch) (E) 370 ± 3 mm (14.57 ± 0.12 inch) (11) 9C-4935 Plate (12) 163-9662 Threaded Boss

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   NOTICE
   Before carrying out arc welding on the machine or on any equipment attached to the machine, disconnect all power and ground leads from the batteries in order to avoid possible damage to electronic components.

9. Position tapped blocks (11) that are supplied in the kit. Weld tapped blocks (11) in place with a 6 mm (0.24 inch) weld along the entire length of each side (F).

10. Position tapped boss (12) that is supplied in the kit. Weld tapped boss (12) in place with a 6 mm (0.24 inch) weld around the entire circumference of the tapped boss.
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    Illustration 10	g03587966

11. Position plate (7) with the ball valves onto tapped blocks (11). Install four bolts (6) and washers.

12. Route new hoses (13). Connect hoses (13) to tubes (1) and to the ball valves on plates (7).

13. Attach with clamps (14 and 15), bolts (16) and washers (17) that are supplied in the kit. Use the existing bosses on the lift arm.

    Note: If there are no existing bosses, use bosses (18) supplied in the kit.

    Unless specified, tighten all fittings and hardware to standard torque.