Yanmar 2V Series, Operation Manual

Page: 85 / 112

PERIODIC MAINTENANCE
2V Operation Manual 69
Tightening Fasteners
Use the correct amount of torque when you tighten
fasteners on the machine. Applying excessive
torque may damage the fastener or component and
not enough torque may cause a leak or component
failure.
STANDARD TORQUE CHART
CAUTION
The tightening torque in the Standard
Torque Chart
(Page 69) should be
applied only to the bolts with a “7” head.
(JIS strength classification: 7T)
• Apply 60% torque to bolts
that are not listed.
• Apply 80% torque when
tightened to aluminum alloy.
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Thread size × Pitch mm M6×1.0 M8×1.25 M10×1.5 M12×1.75 M14×1.5 M16×1.5
Tightening Torque
in · lb 96 ± 9 - - - - -
ft · lb - 19 ± 2 36 ± 4 65 ± 7 101 ± 7 167 ± 7
N · m 10.8 ± 1.0 25.5 ± 2.9 49.0 ± 4.9 88.3 ± 9.8 137.0 ± 9.8 226.0 ± 9.8
kgf · m 1.1 ± 0.1 2.6 ± 0.3 5.0 ± 0.5 9.0 ± 1.0 14.0 ± 1.5 23.0 ± 2.0