hitachi — TIGHTENING TORQUE SPECIFICATION

GENERAL / Tightening Torque No. N x m (kgf x m) (lbf x ft) 2400 (240) (1730) 450 (45.0) (325) 50 ( 5.1 ) ( 37 ) 400 ( 41.0 ) ( 295 ) 400 ( 41.0 ) ( 295 ) NOTE: 1. Apply lubricant (e.g. white zinc B dis- solved into spindle oil) to bolts and nuts to reduce friction coefficient of them. 2. Make sure bolt and nut threads are clean before installing. W1-2-2 Descriptions Bolt Dia Q’ty Wrench Size (mm) mm Counterweight mounting bolt 45 2 65 24 4 36 Signal control valve mounting bolt 10 4 8 holes Front pin-retaining bolt 20 15 30 Front pin-retaining nut 20 7 30