Mitsubishi S4Q User Manual

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Service Manual Mitsubishi SQ-Series diesel engines
Version 08/2004
ENGLISH
TIGHTENING TORQUES MAINTENANCE STANDARDS
MAINTENANCE STANDARDS
36 TIGHTENING TORQUES
36.1 Important Bolts and Nuts
Parts to be fastened
Thread Dia. x
Pitch, mm (M-
thread)
Width across
flats, mm [in.]
Torque
N·m kgf·m lbf·ft
Cylinder head M12 x 1.75 19 [0.75] 118 ± 5 12.0 ± 0.5 87 ± 4
Rock cover M8 x 1.25 12 [0.47] 12 ± 1 1.2 ± 0.1 9 ± 1
Rocker shaft bracket (long bolt) M8 x 1.25 12 [0.47] 15 ± 2 1.5 ± 0.2 11 ± 1
Main bearing cap M12 x 1.75 12 [0.47] 83 ± 5 8.5 ± 0.5 61 ± 4
Connecting rod cap M10 x 1 14 [0.55] 54 ± 5 5.5 ± 0.5 40 ± 4
Flywheel M12 x 1.25 17 [0.67] 83 ± 5 8.5 ± 0.5 61 ± 4
Camshaft thrust plate M8 x 1.25 12 [0.47] 12 ± 1 1.2 ± 0.1 9 ± 1
Front end plate M8 x 1.25 12 [0.47] 12 ± 1 1.2 ± 0.1 9 ± 1
Timing gear case and cover M8 x 1.25 12 [0.47] 12 ± 1 1.2 ± 0.1 9 ± 1
Crankshaft pulley M24 x 1.5 34 [1.34] 392 ± 10 40 ± 1 289 ± 7
Flywheel housing M10 x 1.25 14 [0.55] 60 ± 6 6.1 ± 0.6 44 ± 4
Oil pan M8 x 1.25 12 [0.47] 7.8 ± 1 0.8 ± 0.1 5.8 ± 1
Oil pan drain plug M14 x 1.5 22 [0.87] 39 ± 4 4.0 ± 0.4 29 ± 3
Oil filter shaft M20 x 1.5 __ 49 ± 5 5.0 ± 0.5 36 ± 4
Oil filter M20 x 1.5 __ 12 ± 1 1.2 ± 0.1 9 ± 1
Fuel injection nozzle M20 x 1.5 21 [0.83] 59 ± 6 6.0 ± 0.6 43 ± 4
Fuel injection nozzle retaining nut M16 x 0.75 21 [0.83] 37 ± 2.5 3.77 ± 0.25 27 ± 1.8
Fuel leak-off pipe M12 x 1.5 17 [0.67] 23 ± 2 2.3 ± 0.2 17 ± 1
Fuel injection pump gear M12 x 1.75 19 [0.75] 64 ± 5 6.5± 0.5 47 ± 4
B terminal of starter M8 x 1.25 12 [0.47] 11 ± 1 1.1 ± 0.1 8 ± 1
Glow plug (body)
Glow plug (terminal)
M10 x 1.25
M4 x 0.7
12 [0.47]
8 [0.31]
18 ± 2
1.3 ± 0.2
1.8 ± 0.2
0.13 ± 0.02
13 ± 1
0.94 ± 0.14
Exhaust manifold M8 x 1.25 12 [0.47] 30 ± 2 3.1 ± 0.3 22 ± 2
Pressure relief valve M22 x 1.5 27 [1.06] 49 ± 5 5.0 ± 0.5 36 ± 4
Coolant drain plug 1/4-18NPTF 14 [0.55] 39 ± 4 4.0 ± 0.4 29 ± 3
Fuel injection pipe M12 x 1.5 19 [0.75] 29 ± 3 3.0 ± 0.3 22 ± 2
Fuel return pipe M10 x 1.25 14 [0.55] 20 ± 2 2.0 ± 0.2 14 ± 1
Oil pump set bolt M12 x 1.75 17 [0.67] 34 ± 4 3.5 ± 0.4 25 ± 3
Overheat warning unit (thermoswitch) M16 x 1.5 19 [0.75] 23 ± 2 2.3 ± 0.2 17 ± 1
Drain plug M16 x 1.5 24 [0.94] 44 ± 5 4.5 ± 0.5 33 ± 4

Mitsubishi S4Q Specifications

General

Brand	Mitsubishi
Model	S4Q
Category	Engine
Language	English