- Wheel Loader
- 950 GC (S/N: M5K1-UP; M5T1-UP)
- Work Tool
- QUICK COUPLER (S/N: PA21-UP; Y7A1-UP; Y8B1-UP; A8K1-UP)
Introduction
Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.
The coupler lines group consists of a switch in the cab, and a control valve and pressure lines which supply hydraulic pressure to the quick coupler. The switch has two positions that are used for coupling and uncoupling the work tool. Pressure for the operation of the quick coupler is supplied by the brake system accumulator.
Safety Section
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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, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products. Dispose of all fluids according to local regulations and mandates. |
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Personal injury can result from hydraulic oil pressure and hot oil. Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system. Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. |
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Personal injury or death can result from improperly checking for a leak. Always use a board or cardboard when checking for a leak. Escaping air or fluid under pressure, even a pin-hole size leak, can penetrate body tissue causing 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. |
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| Illustration 1 | g00104545 |
Prevent the machine from movement. Park the machine on a level surface.
Attach a "Do Not Operate" warning tag or a similar warning tag to the start switch or to the controls before you service the equipment . These warning tags (Special Instruction, SEHS7332) are available from your Caterpillar dealer.
Welding Requirements
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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 Society2501 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 LaborWashington, D.C. 20210 |
Welding quality is critical to the success of the installation procedures. Welds must be smooth and continuous. Do not undercut the welds. No overlap is allowed. Grind the ends of the welds to a smooth radius.
All electrodes must be dried completely. The electrodes can be dried by heating the electrodes to
Do not weld in windy conditions. Do not weld when temperatures are below
Penetration characteristics may vary greatly depending on the following conditions:
- Electrode diameter
- Shielding gas
- Welding current
- Plate thickness
The following items also affect the welds:
- Geometry of welded joints
- Surface conditions
- Composition of the base metal and of the electrode
A root pass should be applied before each weld is finished.
Maintain a
All welds to the stick must be welded in the direction from the rear of the stick toward the front of the stick.
For more welding information, consult the Caterpillar Service Welding Guide, SEBD0512.
Required Parts
| 530-2463 Coupler Lines Gp (- 00) | |||
| Item | Qty | Part No. | Part Name |
| (1) | 2 | BOLT-HEX HEAD M6x1 | |
| (2) | 2 | NUT-HEX | |
| (3) | 2 | CAP | |
| (4) | 16 | WASHER-HARD | |
| (5) | 16 | BOLT-HEX HEAD M10x1.5 | |
| (6) | 4 | BOSS | |
| (7) | 4 | WASHER | |
| (8) | 8 | WASHER-HARD | |
| (9) | 2 | VALVE-BALL | |
| (10) | 8 | BOLT-HEX HEAD | |
| (11) | 1 | CONNECTOR AS | |
| (12) | 6 | ADAPTER AS | |
| (13) | 1 | ADAPTER AS | |
| (14) | 1 | ADAPTER AS | |
| (15) | 1 | ADAPTER AS | |
| (16) | 1 | HOSE AS | |
| (17) | 1 | HOSE AS | |
| (18) | 1 | BOSS | |
| (19) | 1 | BRACKET | |
| (20) | 1 | VALVE GP-MTG & | |
| (21) | 1 | SWITCH GP | |
| (22) | 1 | BRACKET | |
| (23) | 1 | BRACKET AS | |
| (24) | 1 | BRACKET AS | |
| (25) | 2 | HOSE AS | |
| (26) | 1 | WIRING GP-CPLR | |
| (27) | 16 | CLIP-LOOP | |
| (28) | 2 | PLATE M10X1.5 | |
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| Illustration 2 | g06223104 |
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Overview of the | |
Note: Switch (21) not shown in overview.
Installation Procedure
- Weld bosses and plates as shown.
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Illustration 4 g06223781 Inside the left-hand loader arm.
(3)6V-9829 CAP
(4)8T-4121 WASHER-HARD
(5)8T-4137 BOLT-HEX HEAD M10x1.5
(8)096-6166 WASHER-HARD
(9)112-1817 VALVE-BALL
(10)121-4405 BOLT-HEX HEAD
(12)148-8336 ADAPTER AS
(18)163-9662 BOSS
(19)324-3471 BRACKET
(25)533-4378 HOSE AS
(26)536-6864 WIRING GP-CPLR
(27)6D-4246 CLIP-LOOP
(28)9C-4935 PLATE M10X1.5 - Install hoses, clips, bracket and ball valves.
Note: Part number (26) attaches to the tilt level sensor.
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Illustration 5 g06223862 (4) 8T-4121 WASHER-HARD
(5)8T-4137 BOLT-HEX HEAD M10x1.5
(20)390-7970 VALVE GP-MTG &
(22)533-0870 BRACKET
(25)533-4378 HOSE AS
(26)536-6864 WIRING GP-CPLR
(27)6D-4246 CLIP-LOOP - Route hoses and connect as shown.
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Illustration 6 g06223901 Close up of area A.
(1)7X-2534 BOLT-HEX HEAD M6x1
(2)5C-2890 NUT-HEX
(7)9X-8256 WASHER
(11)148-8321 CONNECTOR AS
(12)148-8336 ADAPTER AS
(14)148-8378 ADAPTER AS
(20)390-7970 VALVE GP-MTG &
(25)533-4378 HOSE AS
(26)536-6864 WIRING GP-CPLR - Install valve group (20) to the block on the frame as shown.
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Illustration 7 g06223911 (4) 8T-4121 WASHER-HARD
(5)8T-4137 BOLT-HEX HEAD M10x1.5
(15)148-8433 ADAPTER AS
(16)154-5020 HOSE AS
(17)163-7039 HOSE AS
(24)533-3324 BRACKET AS
(27)6D-4246 CLIP-LOOP - Connect and route hoses as shown.
Note: For adapter (15), remove elbow from implement lines group and replace it adapter tee (15).
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Illustration 8 g06223926 (4) 8T-4121 WASHER-HARD
(5)8T-4137 BOLT-HEX HEAD M10x1.5
(13)148-8367 ADAPTER AS
(17)163-7039 HOSE AS
(23)533-3187 BRACKET AS
(27)6D-4246 CLIP-LOOP - Route hose (17) to the brake lines group cylinders, remove cap from the tee and install elbow (13), then connect hose (17).
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Illustration 9 g06223938 Right-hand switch panel in the cab.
(21)474-6211 SWITCH GP - Install the coupler switch in the right-hand panel in the cab.
- Unless specified, tighten all hardware and fittings to standard torque.
- Check for leaks.
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| Illustration 3 | g06223542 |
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View of the right-hand side of the left-hand lift arm. (6) (18) (28) | |
