hitachi — TIGHTENING TORQUE SPECIFICATION

GENERAL / Tightening Torque TIGHTENING TORQUE SPECIFICATION NOTE 1.Apply lubricant (e.g. white zinc B dis- solved into spindle oil) to bolts and nuts to reduce friction coefficient of them. (Except for Sprocket mounting bolt.) 2.Make sure bolt and nut threads are clean before installing. W1-2-1 No.

Descriptions Bolt Dia Q’ty Wrench Size (mm) Torque mm Nxm (kgfxm) (lbfxft) 1 Engine cushion rubber mounting bolt and nut (Pump Side) 18 4 27 400 (40) (300) 2 Engine bracket mounting bolt (Fan Side) 10 10 17 65 (6.5) (48) (Pump Side) 12 8 19 110 (11) (81) 3 Hydraulic oil tank mounting bolt 18 4 27 400 (40) (300) 4 Fuel tank mounting bolt 20 4 30 550 (55) (405) 5 Radiator mounting bolt (Upper Side) 10 6 17 65 (6.5) (48) (Lower Side) 16 4 24 270 (27) (200) 6 Pump mounting bolt 10 8 17 65 (6.5) (48) 7 Control valve mounting bolt 16 4 24 210 (21) (155) Control valve bracket mounting bolt 16 4 24 270 (27) (200) 8 Swing device mounting bolt 22 14 32 650 (65) (480) 9 Swing motor mounting bolt 12 8 10 90 (9) (65) 10 ORS fittings for hydraulic hoses and piping 17 19 22 27 32 36 41 50 25 (2.5) (18) 30 (3) (22) 40 (4) (30) 95 (95) (70) 140 (14) (103) 180 (18) (133) 210 (21) (155) 260 (26) (190) 11 Hycolin tube mounting nut - - 17 35 (3.5) (26) 12 Battery mounting nut 10 4 17 25 (2.5) (18) 13 Cab mounting nut 16 4 24 210 (21) (155) Cab mounting anchor bolt 22 2 32 550 (55) (405) Cab cushion rubber mounting bolt 12 8 19 110 (11) (81) 14 Cover mounting bolt 6 - 10 10 (1) (7.4) 10 - 17 50 (5) (37) 12 - 17 90 (9) (66) 15 Flexible master coupling of piping - 5 pair 13 13.3 to (1.05 to (7.59 to 12.4 1.26) 9.11) 17 20.5 to (2.07 to (15.1 to 22.6 2.30) 16.3) 8 10 6 (0.6) (4.4) T-bolt clamp low pressure piping 27 36 41 1226 (125) (905) 16 Swing bearing mounting bolt (Upperstructure) 27 36 41 1226 (125) (905) (Undercarriage) 20 48 30 630 (63) (465) 17 Travel device mounting bolt 14 12 22 180 (18) (133) Travel reduction device cover mounting bolt 22 44 32 680 (68) (500) Sprocket roller mounting bolt 18 16 27 460 (46) (340) 18 Upper roller mounting bolt 22 68 32 840 (84) (620) 19 Lower roller mounting bolt ZAXIS330-3, 350H-3, 350K-3 22 76 32 840 (84) (620) ZAXIS330LC-3, 350LCH-3, 350LCK 22 36 32 1130 (113) (830) 20 Track shoe bolt ZAXIS330-3, 350H-3, 350K-3 22 384 32 1130 (113) (830) ZAXIS330LC-3, 350LCH-3, 350LCK 22 24 32 750 (75) (555) 21 Track guard mounting bolt ZAXIS3303, 330LC-3, 350K-3, 350LCK 22 24 32 750 (75) (555) 18 16 27 500 (50) (370) ZAXIS350H-3 22 28 32 750 (75) (555) ZAXIS330-3, 350LCH-3, 350K 18 16 27 500 (50) (370)