TM 9-2350-256-102-11. OPERATING PROCEDURES-Continued.NOTEAuxiliary hydraulic system is used in an emergency to raise or lower boom underno-load condition.(2)Riggingtheboom.NOTETwo snatch blocks are provided for hoisting operations-one 10-ton (9.1-metric-ton)and one 25 ton (22.7-metric-ton).(a)To rig 10-ton (9.1-metric-ton) snatch block for a two-part line:1.Lay block in boom tray with hook (1) forward.2.Swing hook (1) out and lift hinge (2).3.Lay cable in pulley and lower hinge (2). Pull hook (1) down to lock hinge.(b)To rig 25-ton (22.7-metric-ton) snatch line:1.Lay block in boom tray with clevis forward.2.Remove screw (3).3.Swing clevis (4) and lift hinge (5).4.Lay cables in snatch block. Do not to tangle or cross cables.2-134
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