7-137
MAINTENANCE
Tightening Torque Chart
Bolt Dia.
mm
Hexagon Wrench Socket Bolt
Wrench size
mm
Socket Bolt
Wrench size
mm
N·m(kgf·m) N·m(kgf·m) N·m(kgf·m) N·m (kgf·m)
6
3.3 to 4.2
(0.3 to 0.4)
10 5
8 30 (3.0) 20 (2.0) 10 (1.0) 13 20 (2.0) 6
10 65 (6.5) 50 (5.0) 20 (2.0) 17 50 (5.0) 8
12 110 (11) 90 (9.0) 35 (3.5) 19 90 (9.0) 10
14 180 (18) 140 (14) 55 (5.5) 22 140 (14) 12
16 270 (27) 210 (21) 80 (8.0) 24 210 (21) 14
18 400 (40) 300 (30) 120 (12) 27 300 (30) 14
20 550 (55) 400 (40) 170 (17) 30 400 (40) 17
22 750 (75) 550 (55) 220 (22) 32
24 950 (95) 700 (70) 280 (28) 36
27 1400 (140) 1050 (105) 400 (40) 41
30 1950 (195) 1450 (145) 550 (55) 46
33 2600 (260) 1950 (195) 750 (75) 50
36 3200 (320) 2450 (245) 950 (95) 55
d
CAUTION: If fixing bolts for counterweight are
loosened, consult your nearest authorized dealer.
IMPORTANT:
Apply lubricant (e. g. white zinc B solved into spindle
oil) to bolts and nuts to stabilize their friction
coefficient.
Remove soil, dust, and/or dirt from the nut and bolt
thread surfaces before tightening.
Tighten nuts and bolts to specifications. If tightened
with excessively low or high torque, missing or
breakage of nuts and/or bolts may result.
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