TM 5-2420-222-20-3 (1) (2) (3) (4) (5) (6) Maintenance Level Group Maintenance UNIT DS GS DEPOT Tools and Number Component/Assembly Function C O F H D Equipment Remarks 2402 Manifold and/or Control Valves (Con’t) Hydraulic Impactor Valve Replace 1.0 1-3 and Flow Regulator Repair 2.5 1-3 Jaw Control Valve Replace 2.0 1-3 Assembly Repair 2.5 3,15 Backhoe Control Valve Replace 3.5 1-3 Assembly Repair 4.0 3,15 Backhoe Relief Valve Replace 0.5 3,15 Cartridges Repair 0.8 3,15 Manifold Block Replace 1.0 1-3 Loader Control Valve Replace 2.0 1-3 Repair 0.5 3,15 Loader Relief Valve Replace 0.5 3,15 Cartridge Repair 0.8 3,15 2403 Hydraulic Controls and/or Manual Controls Jaw Control Valve Repair 1.2 3 Linkage Backhoe Control Valve Inspect 0.2 Levers and Linkage Repair 0.5  3 Loader Control Valve Inspect 0.2 Handle and Linkage Adjust 0.2 3 Repair 0.5 3 2406 Strainers, Filters, Lines, and Fittings Etc. Hoses, Fittings, and Lines Inspect 0.3 Replace 1.0 1-3 A Repair 1.0 1.0 1-3,15 Hydraulic Oil Filter Service 0.5 1-3 Repair 1.5 1-3 2407 Hydraulic Cylinders Jaw Cylinder Assembly Inspect 0.2 Replace 0.8 1-3 Repair 1.5 3,15 Change 1  B-19