STUD-BALL 1199706 - Caterpillar

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Release the hydraulic system pressure. Refer to Disassembly and Assembly, "System Pressure - Release".Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.Note: Put identification marks on all lines, on all hoses, on all harness assemblies, and on all tubes for installation purposes. Plug all lines, hoses, and tubes. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.
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.
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.
Release the hydraulic system pressure. Refer to Disassembly and Assembly, "System Pressure - Release".
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Install Tooling (A) onto the hydraulic tank. Attach an air supply hose onto Tooling (A). Apply 276 to 414 kPa (40 to 60 psi) of air. This procedure will pull vacuum on the hydraulic system.
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Remove cover (1) .
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Remove cable straps (2) .
Disconnect harness assemblies (3) .
Disconnect hose assemblies (4) .
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Disconnect hose assemblies (5) .
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Disconnect hose assembly (6), coupling (7), hose assembly (8), and hose assemblies (9) .
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Disconnect hose assemblies (10) .
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Remove bolts (12) and reposition main control valve (11) in order to access the hose assemblies on the other side of main control valve (11) .
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Disconnect hose assemblies (13) .
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Attach Tooling (B) and a suitable lifting device to main control valve (11). The weight of main control valve (11) is approximately 57 kg (125 lb).
Remove main control valve (11) .
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If necessary, disconnect tube assemblies (14) and remove bolts (15) in order to separate main control valve (11) from mounting bracket (16) .