Yanmar 4JH45 Operation Manual page 65

12/05
Main Bolts and Nuts
Name
Head bolt
Connecting rod bolt
Flywheel bolt
Metal cap bolt
Crank pulley bolt
Injector retainer bolt
Rocker arm support bolt
Rocker arm cover nut
Supply pump gear nut
Retainer bolt for
Flywheel speed sensor
Retainer bolt for
Cam shaft speed sensor
Retainer nut for
Lubricating Oil Cooler
High pressure
pipe nut
Glow plug
Heat exchanger set bolt
Pressure sensor
Starter relay terminal nut
JH Series Operation Manual
Thread Diameter
x Pitch
M10 x 1.25
M9 x 1.0
M10 x 1.25
M12 x 1.5
M14 x 1.5
M8 x 1.25
M8 x 1.25
M8 x 1.25
M18 x 1.5
M6 x 1.0
M6 x 1.0
M20 x 1.5
Injector M12 x 1.5
Rail M12 x 1.5
Pump M16 x 1.0
M10 x 1.25
M4 x 0.7
M8 x 1.25
M6 x 1.0
M6 x 1
PERIODIC MAINTENANCE
Lubricating Oil
Application
(thread portion and
seat surface)
Apply oil
Apply oil
Apply oil
Apply oil
Apply oil
Without oil
Without oil
Without oil
Without oil
Without oil
Without oil
Without oil
Without oil
Without oil
Without oil
Without oil
Without oil
Without oil
Without oil
Torque N·m (ft-lb)
88.2 ± 2.9 (65.1 ± 2.1)
+4.9/0 +3.6/0
44.1 (32.5 )
+4.9/0 +3.6/0
83.3 (61.4 )
98.0 ± 2.0 (72.3 ± 1.5)
88.2 ± 4.9 (65.1 ± 3.6)
26.4 ± 2.0 (19.5 ± 1.5)
25.5 ± 1.5 (18.8 ± 1.1)
13.5 ± 0.5 (10.0 ± 0.4)
80.0 ± 5.0 (59.0 ± 3.7)
8.0 ± 2.0 (5.9 ± 1.5)
8.0 ± 0.5 (5.9 ± 0.4)
78.5 ± 4.9 (57.9 ± 3.6)
+2/-4.4 +1.5/-3.2
29.4 (21.7 )
Body 14.7 to 19.6
(10.8 to 14.5)
Terminal 1.0 to 1.5
nut (0.7 to 1.1)
37.2 ± 3.0 (27.4 ± 2.2)
7.0 ± 1.4 (5.2 ± 1.0)
3.6 ± 0.6 (2.7 ± 0.4)
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