SUPPORT AS-RH 5V3817 - Caterpillar

At operating temperature, the hydraulic oil tank is hot and under pressure. Hot oil can cause burns. Remove the fill plug only when the engine is stopped, and the fill plug is cool enough to touch with your bare hand.
1. Release the pressure in the hydraulic system by slowly loosening the fill plug located on the top of the hydraulic oil tank.2. Remove the access cover from under the cab.
View From Under Cab 3. Put identification marks on six hoses (2) that are connect to the pilot control valve (travel) so they can be reinstalled in their original locations. Disconnect the hoses from the valve.4. Remove the rubber floor mate from the cab to gain access to the mounting bolts for the pilot control valve (travel).5. Remove two bolts (3) and the washers that hold the pilot control valve to the floor of the cab. Remove pilot control valve (travel) (1). The following steps are for the installation of the pilot control valve (travel).6. Put pilot control valve (travel) (1) in position in the floor of the cab. Install two bolts (3) and the washers that hold it. Reinstall the rubber floor mate in the cab.7. Connect six hoses (2) to the pilot control valve (travel).8. Reinstall the access cover under the cab.9. Check the oil level in the hydraulic oil tank. Fill the hydraulic oil tank to the correct. See the Operation & maintenance Manual for the correct filling procedure.Disassemble & Assemble Pilot Control Valves (Travel)
Start By:a. remove pilot control valves (travel)
Do not mix the components in the pilot control valve (travel) as it is being disassembled. All components should be reinstalled in their original locations. Put identification marks on all components to prevent mixing.
1. Be sure the outside of the pilot control valve (travel) is thoroughly clean prior to disassembly. Check the condition of all o-ring seals used in the valve. If the seals are worn or damaged, use new parts for replacement. 2. Remove cover (3) from pedal (5). Remove two bolts (4) and the washers. Remove lever assembly (2) from the pilot control valve.3. Remove two bolts (6) and the washers. Remove lever assembly (2) from the pedal. If necessary, remove knob (1) from the lever. 4. Remove bellows (22) from cam (24). Remove shaft (28); then remove cam (24) from cover (26). Remove screws (16) and (23) from cam (24).5. Remove two socket head bolts (25). Remove cover (26) from valve casing (14). Remove bushing (19) and (27) from cover (26).6. Remove plug (29) from the valve casing. Remove o-ring seal (30), scraper (20) and seal (21) from plug (29).7. Remove rod (7), washers (8) and (15), seat (9), springs (10) and (11), washers (12) and (17) and spool (13) from valve casing (14).8. Remove the other valve assembly components as in Steps 6 and 7. The following steps are for the assembly of the pilot control valve (travel).9. Be sure all parts of the pilot control valve (travel) are thoroughly clean and