
2.
Tightening Torques
2.1 Important Bolts and Nuts
Thread
Width
Tightening Torque
Description
Dia.
×
Pitch
across flats,
Remark
(M-thread)
mm
N·m
kgf·m
lbf·ft
Cylinder head
M12
×
1.75
19
113 to 123
11.5 to 12.5
83 to 90
Rocker cover
M8
×
1.25
12
10.0 to 13.0
1.0 to 1.3
7.23 to 9.40
Rocker shaft brackets
M8
×
1.25
12
10.0 to 20.0
1.0 to 2.0
7.23 to 14.5
Main bearing caps
M14
×
2
22
98 to 108
10.0 to 11.0
72 to 80
Connecting rod cap nuts
M10
×
1.25
14
49.0 to 59.0
5.0 to 6.0
36.2 to 43.4
Flywheel M12
×
1.25
17
78.5 to 88.3
8.0 to 9.0
57.9 to 65.1
Camshaft thrust plate
M8
×
1.25
12
10.0 to 13.0
1.0 to 1.3
7.23 to 9.40
Front plate
M8
×
1.25
12
10.0 to 13.0
1.0 to 1.3
7.23 to 9.40
Timing gear case
M8
×
1.25
12
17.0 to 20.0
1.7 to 2.0
12.3 to 14.5
Crankshaft pulley
M30
×
1.5
46
480 to 500
49 to 51
354 to 369
Idler gear thrust plate
M10
×
1.25
14
29.0 to 39.0
3.0 to 4.0
21.7 to 28.9
Oil pan
M8
×
1.25
12
10.0 to 13.0
1.0 to 1.3
7.23 to 9.40
Oil pan drain plug
M20
×
1.5
24
73.0 to 83.0
7.5 to 8.5
54.2 to 61.5
Rear plate
M10
×
1.25
14
5.40 to 65.7
5.5 to 6.7
39.8 to 48.5
Fuel injection nozzle
M16
×
0.75
—
34.3 to 39.2
3.5 to 4.0
25.3 to 28.9
retaining nut
Fuel injection nozzle
M20
×
1.5
21
49.0 to 68.6
5.0 to 7.0
36.2 to 50.6
(install to engine)
Fuel injection pump
—
22
34.5 to 39.2
3.5 to 4.0
25.3 to 28.9
delivery valve holders
Fuel injection pump gear
M12
×
1.75
19
58.8 to 68.6
6.0 to 7.0
43.4 to 50.6
Exhaust manifold
M8
×
1.25
12
15.0 to 22.0
1.5 to 2.2
10.8 to 15.9
Oil pressure relief valve
M22
×
1.5
27
44.1 to 53.9
4.5 to 5.5
32.5 to 39.8
Coolant drain plug
1/4 – 18NPSF
14
35.3 to 43.1
3.6 to 4.4
26.0 to 31.8
Fuel injection pipe nuts
M12
×
1.5
17
26.5 to 32.4
2.7 to 3.3
19.5 to 23.9
Fuel return pipe nut
M10
×
1.25
14
17.7 to 21.6
1.8 to 2.2
13.0 to 15.9
Oil pump gear
M10
×
1.25
14
28.0 to 38.0
2.9 to 3.9
21.0 to 28.2
Starter terminal B
M8
×
1.25
12
9.81 to 11.8
1.0 to 1.2
7.23 to 8.68
Plug
M16
×
1.5
24
39.2 to 49.0
4.0 to 5.0
28.9 to 36.2
Cylinder head
Fuel injection pump eye bolt
M14
×
1.5
22
15.0 to 20.0
1.5 to 2.0
10.8 to 14.5
Fuel injection pump
M10
×
1.0
—
7.9 to 12.7
0.8 to 1.3
5.8 to 9.4
oil inlet eye bolt
Thermostat case
M8
×
1.25
12
16.0 to 20.0
1.8 to 2.0
11.8 to 14.5
Alternator pulley
M20
×
1.5
27
132 to 162
12.9 to 15.9
93.3 to 115
Glow plug (Body)
M10
×
1.25
12
14.7 to 19.6
1.5 to 2.0
10.8 to 14.5
Glow plug (Connection plate)
M4
×
0.7
7
0.98 to 1.47
1.0 to 1.5
0.72 to 1.08
2-6
MAINTENANCE STANDARDS