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STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 2). Machinery Cycle Inspection item Mast verticality and levelness After each erection Half a month ∨ ∨ ∨ Visual inspection of gear ring bolt Metal structure Tighten up of slewing gear ring bolt ∨ ∨ Visual inspection the fishplate connection on standard mast, jib, counter jib and fixing plate on base plate, including pin, split pin and bolt. ∨ ∨ Detect the crack of section steel and check the weld joint ∨ ∨ Adjust and check the brake with max. load Mechanical parts Check the worn out of the wearing plate Check the oil level of reducer Hoisting winch ∨ Slewing mechanism ∨ Trolleying winch ∨ Traveling mechanism ∨ Hoisting winch ∨ ∨ Slewing mechanism ∨ ∨ Trolleying winch ∨ ∨ Traveling mechanism ∨ ∨ Hoisting winch ∨ ∨ Slewing mechanism ∨ ∨ Trolleying winch ∨ ∨ 3B-10
