PLUG-HEX 5061551 - Caterpillar

Removal Procedure
Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
ZZ     6V-9510     Face Seal Plug     1    
6V-9831 Cap As     1    
9U-7076 Tapered Cap/Plug     1    
9U-7082 O-Ring Seal     1    
9U-7084 Tapered Cap/Plug     1    
9U-7087 O-Ring Seal     1    Start By:
Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".
Tilt the cab. Refer to Disassembly and Assembly, "Cab - Tilt".Note: SERVICE DATA: TOOLING (ZZ) WILL NOT BE IDENTIFIED IN PHOTOGRAPHS IN THE REMOVAL OR THE INSTALLATION. THIS TOOLING IS SHOWN IN ORDER TO ASSIST THE EXPERIENCED SERVICEMAN.
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.
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 Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Note: Cleanliness is an important factor. Before you begin the disassembly procedure, the exterior of the components should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism. Precision components can be damaged by contaminants or by dirt. Perform disassembly procedures on a clean work surface. Keep components covered and protected at all times.Note: Put identification marks on all hoses, on all hose assemblies, on all wires, and on all tube assemblies for installation purposes. Plug all hose assemblies and all tube assemblies. This helps to prevent fluid loss, and this helps to keep contaminants from entering the system.
Drain the hydraulic tank. Refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change".
Illustration 1 g01020788
Disconnect hose assemblies (2). Loosen clamps (4) and disconnect hoses (5) .
Remove bolts (1) (not shown) that hold gear pump (3). Remove gear pump (3) .
Illustration 2 g00996364
Remove O-ring seal (6). Note the orientation of coupler (7) for installation purposes.