Mitsubishi K21 Service Manual

Standard Bolt Tightening Torque (Cont’d)
TAPER SCREW TIGHTENING TORQUE
Engine Part Tightening Torque
TIGHTENING TORQUE AT VARIOUS POINTS OF
ENGINE
Allowable materials
for tightening
Normal size
Unit
Aluminum Cast iron
Standard
Max.
value
Standard
Max.
value
R1/8
N·m 7.8 11.8 15.7 21.6
kg-m 0.796 1.2 1.6 2.2
ft-lb, in-lb* 69* 9 12 16
R1/4
N·m 19.6 29.4 34.3 44.1
kg-m 2.0 3.0 3.5 4.5
ft-lb 14 22 25 33
R3/8
N·m 39.2 54.9 53.9 73.5
kg-m 4.0 5.6 5.5 7.5
ft-lb 29 41 40 33
Tightening point Unit Standard Max. value
Cylinder head (lubricated) Separately given
Main bearing cap (lubricated) Separately given
Crankshaft pulley bolt
N·m 220.5 240.1
kg-m 22.5 24.5
ft-lb 163 177
Flywheel bolt (lubricated)
N·m 132 142
kg-m 13.47 14.49
ft-lb 94.4 104.8
Connecting rod nut (lubricated)
N·m 31.4 37.3
kg-m 3.2 3.81
ft-lb 23 27.6
Rear plate bolt
N·m 44.1 58.8
kg-m 4.5 6.0
ft-lb 33 43
Camshaft sprocket bolt
N·m 39.2 49
kg-m 4.0 5.0
ft-lb 29 36
Oil filter stud
N·m 29.4 39.2
kg-m 3.0 4.0
ft-lb 22 29
Oil filter element
N·m 14.7 20.6
kg-m 1.5 2.1
ft-lb 11 15
Spark plug
N·m 19.6 29.4
kg-m 2.0 3.0
ft-lb 14 22
Engine slinger bolt
N·m 22.6 25.5
kg-m 2.31 2.6
ft-lb 16.7 19
Rocker cover nut
N·m 14.7 16.7
kg-m 1.5 1.7
ft-lb 11 13
Water temperature gauge
N·m 15.7 19.6
kg-m 1.6 2.0
ft-lb 12 14
Oil pressure switch
N·m 15.7 21.6
kg-m 1.6 2.2
ft-lb 12 16
Exhaust manifold nut
N·m 41.2 48.1
kg-m 4.2 4.91
ft-lb 30 35.5
Straight screw plug (For head top face)
N·m 44.1 53.9
kg-m 4.5 5.5
ft-lb 33 40
Oil pan drain plug
N·m 29.4 39.2
kg-m 3.0 4.0
ft-lb 22 29
GI-8
TIGHTENING TORQUE

Mitsubishi K21 Specifications

General

Brand	Mitsubishi
Model	K21
Category	Engine
Language	English