SCOOP HYDRAULIC CONTROL VALVE, CONTROL VALVE HOSES,
CONTROL LINKAGE, AND MAIN FRAME BRACKETS MAINTENANCE (Contd)
Cap and plug all hoses, connections, and openings immediately
after disconnection to prevent contamination. Remove caps or plugs
prior to installation. Failure to comply may result in damage to
Ensure scoop hydraulic control valve assembly is supported during
removal, disassembly, assembly, and installation. Failure to comply
may result in damage to equipment.
Scoop hydraulic control valve assemblies, control valve hoses,
control linkage, and mounting brackets are replaced the same way.
This procedure covers replacement of one scoop hydraulic control
valve assembly; four control valve hoses, control linkage, and
Tag all hoses during removal to assist with installation.
CONTROL VALVE HOSES REMOVAL
Have container ready to catch oil.
Disconnect hose tube elbows (2), (3), (6), and (8) from three adapters (9) and adapter (13) on scoop
hydraulic control assembly manifold (14).
Disconnect other ends of hoses (1) and (5) from scoop hydraulic cylinder (27).
Disconnect other end of hose (7) from hydraulic pump.
Disconnect other end of hose (4) from hydrojet oil cooler.
MAIN FRAME BRACKET REMOVAL
1. Remove cotter pin (21), pin (11), and clevis (10) from control link (12). Discard cotter pin (21).
2. Remove locknuts (20) and (22), two washers (19), screw (17), and lever stop bracket (18) with
clevis (10) from main frame bracket (15) and stud (16). Discard locknuts (20) and (22).
3. Remove locknut (27), washer (28), screw (33), washer (32), and one end of control link (31) from scoop
hydraulic cylinder (26). Discard locknut (29).
4. Remove two locknuts (24), washers (25), main frame bracket (15), control valve assembly (34), and
fiber washers (26) from three studs (16) on hydrojet housing (30). Discard locknuts (24).