PERIODIC MAINTENANCE
8LV Series Operation Manual
37
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.
■
Main Bolt and Nut Tightening Torque
No.
Tightening Parts
Thread
Dia.
×
Pitch
Material
Lubricant
Tightening Torque
N·m (kgf-m)
1
Exhaust Manifold
M10
×
1.25
S45C
–
36 ± 4 (3.7 ± 0.4)
2
Mounting Foot
M12
×
1.25
SCM435
–
80 ± 10 (8.2 ± 1.0)
3
Union, Lubricating Oil
Filter
3/4 - 16 UNF
Apply lubricating oil
43.1 (4.4)
4
Lubricating Oil Filter
3/4 - 16 UNF
Apply lubricating oil
14.7 - 19.6 (1.5 - 2.0)
5
Bolts, Installation of
Seawater Pump
M8
×
1.25
S45C
–
20 ± 3 (2.0 ± 0.3)
6
Support, Lubricating
Pipe (Lubricating Oil
Filter in/out)
M8
×
1.25
S45C
–
5 ± 1 (0.5 ± 0.1)
7
Nut, Starter B Terminal
M8
×
1.25
S45C
–
21 ± 2 (2.1 ± 0.2)
8
Bracket, EDU (Head
Cover Insert of Resin)
M6
×
1
S45C
–
10 ± 1 (1.0 ± 0.1)
9
Battery Terminal (Head
Cover Insert of Resin)
M6
×
1
S45C
–
10 ± 1 (1.0 ± 0.1)
10
Nut, Battery Terminal
M8
×
1.25
–
10 ± 1 (1.0 ± 0.1)
11
V Band, Turbo-charger
and Mixing Elbow
Apply Molybdenum
Coat on the threads
After tightening at 6 ± 1 (0.6 ±
0.1), hit the outer circumference
with a plastic hammer (3 times
evenly at 3 places or more), and
retighten at 6 ± 1 (0.6 ± 0.1).
12
Bolts, Installation of
Vibration Isolator
M16
×
2
SMC435
–
196 ± 10 (20.0 ± 1.0)
8LV_OPM.book 37 ページ 2011年1月11日 火曜日 午後12時8分