Yanmar 4D98E - Tightening Torques for Standard Bolts and Nuts

1. GENERAL
1-8 Tightening torques for standard bolts and nuts
(Lubricating oil not applied)
(Unit: Nm {kgfom})
Item
Nominal thread
Tightening torque Remarks
diameter x pitch
M6 x 1
9.8
-11 .8 {1.0 -1 .2} 1) Use 80% of the value at left when
M8 x 1.25
22.5 - 28.4 {2.3 - 2.9}
the tightening side is aluminum.
2) Use 60%
of the value at left for 4 T
Hexagon bolt
(IT)/nut
bolts and lock nuts.
M10 x 1.5
44.1 - 53.9 {4.5 - 5.5}
M12x1.75
78.4 - 98 {8.0 - 10}
1/8 9.8
{1 .0}
1/4 19.6 {2.0}
PT plug
3/8 29.4 {3.0}
1/2 58.8 {6.0}
M8
12.7 - 16.7 {1.3 - 1.7}
M12
24.5 - 34.3 {2.5 - 3.
5}
Pipe joint bolt
M14
39.2 - 49 {4.0 - 5.0}
M16
49 - 58.8 {5.0 - 6.0}
4D92E,4D94LE,4D98E
1-15