Yanmar 4TNV98, Service Manual

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4TNV98 & 4TNE98 Diesel Engine Section 1. General Service Information 26
Item
Nominal Thread
Diameter x Pitch
Tightening Torque Remarks
M6 x 1.0 mm
7 - 9 ft·lb
(87 -104 in·lb,
9.8 -11.8 N·m,
1.0 -1.2 kgf·m)
M8 x 1.25 mm
17 - 21 ft·lb
(200 - 251 in.·lb,
22.6 - 28.4 N·m,
2.3 - 2.9 kgf·m)
M10 x 1.5 mm
33 - 40 ft·lb
(44.1 - 53.9 N·m,
4.5 - 5.5 kgf·m)
M12 x 1.75 mm
58 - 72 ft·lb
(78.4 - 98.0 N·m,
8.0 - 10 kgf·m)
M14 x 1.5 mm
94 - 108 ft·lb
(127.5 - 147.1 N·m,
13 - 15 kgf·m)
Hexagon Bolt (7T) and
Nut
M16 x 1.5 mm
159 - 174 ft·lb
(215.7- 235.4 N·m,
22 – 24 kgf·m)
Use 80% of the
value at left when
the tightening part
is aluminum.
Use 60% of the
value at left for 4T
bolts and lock nuts.
1/8 mm
7 ft·lb (87 in.·lb,
9.8 N·m, 1.0 kgf·m)
1/4 mm
14 ft·lb (173 in.·lb,
19.6 N·m, 2.0 kgf·m)
3/8 mm
22 ft·lb
(29.4 N·m, 3.0 kgf·m)
PT PLug
1/2 mm
43 ft·lb
(58.8 N·m, 6.0 kgf·m)
Item
Nominal Thread
Diameter x Pitch
Tightening Torque Remarks
M8
9 - 12 ft·lb
(112 - 148 in.·lb,
12.7 - 16.7 N·m,
1.3 - 1.7 kgf·m)
M10
14 - 19 ft·lb
(173 - 225 in.·lb,
19.6 - 18.734 N·m,
2.0 - 3.5 kgf·m)
M12
18 - 25 ft·lb
(24.5 - 34.3 N·m,
2.5 - 3.5 kgf·m)
M14
29 - 36 ft·lb
(39.2 - 49.0 N·m,
4.0 5.0 kgf·m)
Pipe Joint Bolt
M16
36 - 43 ft·lb
(49.0 - 58.8 N·m,
5.0 - 6.0 kgf·m)
.
NOTE:
Torque values shown in this manual are for clean, non-lubricated fasteners unless otherwise specified.