Yanmar 8LV320 - Engine is not running smoothly; Engine stops suddenly; Abnormal exhaust color

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