14. Tightening torque for bolts and nuts
208
14. Tightening torque for bolts and nuts
14.1 Main bolt and nut
14.2 Standard bolts and nuts (without lube oil)
No
Name
Thread diameter
x pitch
Lube oil application
(thread portion and seat
surface)
Torque
N•m(kgf•m)
1
Head bolt
M9 x 1.25
Coat with lube oil
53.9-57.9 (5.5-5.9)
2
Rod bolt
M7 x 1.0
Coat with lube oil
22.6-27.5 (2.3-2.8)
3
Flywheel retainer bolt
M10 x 1.25
Coat with lube oil
80.4-86.4 (8.2-8.8)
4
Metal cap retainer bolt
M10 x 1.25
Coat with lube oil
75.5-81.5 (7.7-8.3)
5
Crankshaft pulley bolt
(FC250 pulley)
M10 x 1.25
Coat with lube oil
83.3-93.3 (8.5-9.5)
6
Fuel pump gear nut
M12 x 1.75
Coat with lube oil
58.8-68.8 (6.0-7.0)
7
Nozzle fastening nut
M20 x 1.5
No lube oil
49-53 (5.0-5.4)
8
Fuel injection pipe
joint nut
M12 x 1.25
No lube oil
29.4-34.4 (3.0-3.5)
9
Glow plug
M10 x 1.25
No lube oil
14.7-19.6(1.5-2.0)
10
Governor weight
support fastening nut
M12 x 1.25
Coat with lube oil
68.7-73.7(7.0-7.5)
N•m (kgf•m)
Name
Screw dia. x pitch
Tightening torque
Remarks
Hexagon bolt (7T) and
nut
M6 x 1
9.8-11.8(1.0-1.2)
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.
M8 x 1.25
22.5-28.5(2.3-2.9)
M10 x 1.5
44-54(4.5-5.5)
M12 x 1.75
78.2-98.2(8.0-10.0)
PT plug
1/8
9.8 (1.0)
-
1/4
19.6 (2.0)
3/8
29.4 (3.0)
1/2
58.8 (6.0)
Pipe joint bolt
M8
12.7-16.7(1.3-1.7)
-
M10
19.5-25.5 (2.0-2.6)
M12
24.4-34.4 (2.5-3.5)
M14
39.1-49.1 (4.0-5.0)
M16
48.9-58.9 (5.0-6.0)
Summary of Contents for 3YM20
Page 1: ...M9961 03E100 ...
