TUBE AS 2476227 - Caterpillar

Hydraulic oil that is under pressure and hot can cause bodily injury. Move the control levers to relieve the pressure in the hydraulic system. Slowly loosen cap to release any pressure in the hydraulic tank. Let the hydraulic oil become cool before any lines are disconnected in the hydraulic system.
4. Remove bolts (1) and the retainers that hold boots (2) in position. Move boots (2) up on the control rods. 5. Remove the cotter pins and pins (3) to disconnect the control rods from the valve spools.6. Put identification on the hydraulic lines connected to the pilot control valve for correct installation. 7. Disconnect hose assemblies (4), (5), (6), (7), (8) and (9) from the pilot control valve. 8. Disconnect hose assemblies (10), (11) and (12) from the pilot control valve. 9. Remove three bolts (13) that hold pilot control valve (14). Remove pilot control valve (14).Install Pilot Control Valve
1. Put pilot control valve (14) in position and install the three bolts (13) to hold it. 2. Connect hose assemblies (10), (11) and (12) to pilot control valve (14). 3. Connect hose assemblies (4), (5), (6), (7), (8) and (9) to pilot control valve (14). 4. Move control rods into position and install pins (3) and the cotter pins to connect the control rods to the valve spools. 5. Move boots (2) in position on the pilot control valve spools and install retainers and bolts (1) to hold boots (2) in position.6. Install the armrest (right side).7. Install the seat and panel.8. Install the floor plate.Disassemble Pilot Control Valve
Start By: a. remove pilot control valve 1. Remove bolts (5) and make a separation of valve body (1), bulldozer tilt pilot control valve (4), ripper lift pilot control valve (2), ripper tilt pilot control valve (3) and manifold (6). The bulldozer tilt, ripper lift and ripper tilt pilot control valves are disassembled the same way. Follow Steps 2 through 7 to disassemble the pilot control valves. 2. Remove the three O-ring seals (8) and the three O-ring seals (9) from the valve body. 3. Remove housing (7) from the valve stem and valve body.4. Remove O-ring seal (10) and seal (11) from housing (7). 5. Remove housing (12) from the valve body. Remove the O-ring seal from housing (12). 6. Remove valve stem (13) from the valve body. 7. Remove retainer (16), spring (15) and retainer (14) from the end of valve stem (13). If necessary, remove plug (17) and the O-ring seal from the end of valve stem (13) on the ripper lift and ripper tilt pilot control valve stems only. 8. Remove plug (18) and the O-ring seal from valve body (1). 9. Remove spring (20) and valve stem (19) from valve body (1).Assemble Pilot Control Valve
1. Make sure all of the parts are clean and free of dirt and foreign material. Put clean hydraulic oil on all parts at assembly. 2. Install valve stem (19), spring (20), O-ring seal (21) and plug (22) in valve body