Yanmar 3GM30 Specifications Page 58

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PERIODIC MAINTENANCE
52 YM Series Operation Manual
Tightening Fasteners
Use the correct amount of torque when you tighten fasteners on the engine. Applying
excessive torque may damage the fastener or component and not enough torque may
cause a leak or component failure.
NOTICE
he tightening torque in the Standard Torque Chart 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.
Bolt Diameter x
Pitch (mm)
M6x1.0 M8x1.25 M10x1.5 M12x1.75 M14x1.5 M16x1.5
Tightening
Torque
N·m 11.0 ± 1.0 26.0 ± 3.0 50.0 ± 5.0 90.0 ± 10.0 140.0 ± 10.0 230.0 ± 10.0
ft-lb 8.0 ± 0.7 19.0 ± 2.1 37.0 ± 3.6 66.0 ± 7.2 103 ± 7.2 170 ± 7.2
YM OPM_EN.book 52 ページ 2013年6月7日 金曜日 午前11時11分
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валера 23 Aug 2024 | 15:16:25

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