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 1411 Hoses, Lines, Fittings Replace 1.0 3 1412 Hydraulic or Air Cylinders Steering Cylinder Inspect 0.2 Assemblies Service 0.1 Replace 4.0 3,15 Repair 6.0 3,15 1414 Steering System Vales Steering Valve Assembly Replace 4.0 3,15 Repair 6.0 3,15 15 FRAME, TOWING ATTACH- MENTS, DRAWBARS, AND ARTICULATION SYSTEMS 1501 Frame Assembly Front Support Inspect 0.5 Replace 6.0 3,15 Repair 2.0 3,15 1502 Counterweights Counterweight Assembly Replace 1.8 1-3 Repair 1.8 1-3 18 BODY, CAB, HOOD, AND HULL 1801 Body, Cab, Hood, and Hull Assemblies Front Canopy Mounts Replace 2.0 3,15 Back hoe Control Guards Replace 1.0 3 Roll-over Protective Inspect 0.5 Structure and Rear Replace 8.0 3,15 Canopy Mountings Repair 2.0 3,15 Canopy Protective Roof Replace 2.0 3,15 Repair 2.5 3,15 Cowl Support Replace 1.5 3,15 Cowl Replace 1.0 1-3 Repair 1.2 1-3 Change 1  B-16