Yanmar 4TNV98, Service Manual

Page: 76 / 246

4TNV98 & 4TNE98 Diesel Engine Section 3. Engine 74
(Torque for Bolts and Nuts Cont.)
Component
Thread Diameter and
Pitch
Torque
Lubricating Oil
Application
(Thread Portion
and Seat Surface)
Main Bearing Cap Bolt M11 x 1.25 mm
80 - 87 ft·lb
(108.1 - 117.9 N·m;
11.0 - 12.0 kgf·m)
Applied
Crankshaft Pulley Bolt M14 x 1.5 mm
80 - 94 ft·lb
(107.9 - 127.5 N·m;
11.0 - 13.0 kgf·m)
Applied
Fuel Injector
Bolt
4TNV98 M8 x 1.25 mm
17 - 21 ft·lb
(22.6 - 28.4 N·m;
2.3 - 2.9 kgf·m)
Not Applied
Fuel Pump
Drive Gear
Nut
4TNV98 M18 x 1.5 mm
83 - 90 ft·lb
(113 - 123 N·m;
11.5 - 12.5 kgf·m)
Not Applied
High-Pressure
Fuel Lines Bolt
4TNV98 M12 x 1.5 mm
174 - 217 in·lb
(19.6 - 24.5 N·m;
2.0 - 2.5 kgf·m)
Not Applied
Fuel Return
Line Joint Bolt
4TNV98 M6 x 1.0 mm
70 - 86 in·lb
(7.8 - 9.8 N·m;
0.8 - 1.0 kgf·m)
Not Applied
See Tightening Torques for Standard Bolts and Nuts on page 23 for standard hardware torque values.