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Page Title: BACKHOE CONTROL VALVE
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TM 5-2420-222-20-3 BACKHOE CONTROL VALVE This task covers: a. Removal (page 2-1260) d. Inspection/Replacement (page 2-1264) b. Disassembly (page 2-1262) e. Assembly (page 2-1265) c. Cleaning (page 2-1264) f. Installation (page 2-1266) INITIAL SETUP Tools Materials/Parts - Continued Handle, ratchet, 1/2-inch drive Packing, union adapter-to-valve Knife, pocket (two required) Pan, drain Packing, union adapter-to-valve Socket, 1/2-inch drive, 3/4-inch (four required) Wrench, open-end, 11/16-inch Packing, union adapter-to-valve Wrench, open-end, 3/4-inch (two required) Wrench, open-end, 7/8-inch Rags, wiping (item 21, Appendix C) Wrench, open-end, 15/16-inch Solvent, dry-cleaning (item 28, Appendix C) Wrench, open-end, 1-inch Tags, marking (item 30, Appendix C) (two required) Wrench, open-end, 1 1/8-inch Personnel Required Wrench, open-end, 1 1/4-inch Wrench, open-end, 1 3/4-inch Two Materials/Parts Equipment Condition Lockwasher, valve screw 1.   Hydraulic system pressure released (three required) (page 2-1191) Packing, adapter-to-valve 2.   Backhoe control valve levers and linkage (six required) removed (page 2-1189) ACTION LOCATION ITEM REMARKS REMOVAL WARNING Do  not  attempt  to  disconnect  hydraulic  lines  and  fittings  while  engine  is  running  or before   hydraulic   system   pressure   has   been   released.      When   engine   is   running, hydraulic system is under pressure.  Hydraulic system pressure should be 0 psi (0 kPa) before lines are disconnected.  A line or fitting disconnected under pressure will blow off with a lot of force and could cause serious injury to personnel. Be careful when draining hot fluids.  Wear gloves to protect your hands from hot parts and fluids or severe burns could result. 2-1260

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