INTRODUCTION
TIGHTENING TORQUE
Tighten fasteners to the torque specified in the exploded view(s) and/or in the written procedure. When
a torque is not specified, the torque normally recommended for a specific fastener should be used. Refer
to the following table.
WARNING
Torque wrench tightening specifications must be strictly adhered to.
Locking devices must be replaced when removed (e.g.: locking tabs, elastic stop nuts, self-lock-
ing fasteners, cotter pins, etc.).
In order to avoid a poor assembly, tighten screws, bolts, or nuts in accordance with the following proce-
dure:
1. Manually screw all screws, bolts and/or nuts.
2. Apply half the recommended torque value.
NOTICE
Be sure to use the recommended tightening torque for the specified fastener used.
NOTE: Whenever possible, always apply torque on the nut.
3. Tighten fastener to the recommended torque value.
NOTE: Always torque screws, bolts and/or nuts using a crisscross pattern when multiple fasteners are
used to secure a p art (e.g. a cylinder head). Some parts must be torqued according to a specific se-
quence and torque pattern as detailed in the installation procedure.
A00A8BS
Property
class and
head
markings
Property
class and
nut
markings
5
5
8
8
10
10
12
12
4.8
4.8
4.8
8.8
8.8
8.8
9.8
9.8
9.8
10.9
10.9
10.9
12.9
12.9
12.9
12.9
FASTENER GRADE/TORQUE
FASTENER
SIZE
5.8 Grade 8.8 Grade 10.9 Grade 12.9 G rade
M4
1.5 N•m - 2 N•m
(13 lbf•in -18lbf•in)
2.5 N•m - 3 N•m
(22 lbf•in -27lbf•in)
3.5 N•m - 4 N•m
(31 lbf•in -35lbf•in)
4N•m -5N•m
(35 lbf•in -44lbf•in)
M5
3N•m -3.5N•m
(27 lbf•in -31lbf•in)
4.5 N•m - 5.5 N•m
(40 lbf•in -49lbf•in)
7N•m - 8.5N•m
(62 lbf•in -75lbf•in)
8N•m - 10N•m
(71 lbf•in -89lbf•in)
M6
6.5 N•m - 8.5 N•m
(58 lbf•in -75lbf•in)
8 N•m - 12 N•m
(71 lbf•in - 106 lbf•in)
10.5 N•m - 1 5 N•m
(93 lbf•in - 133 lbf•in)
16 N•m (142 lbf•in)
M8 15 N•m (133 lbf•in) 25 N•m (18 lbf•ft) 32 N •m (24 lbf•ft) 40 N •m (30 lbf•ft)
M10 29 N•m (21 lbf•ft) 48 N•m (35 lbf•ft) 61 N•m (45 lbf•ft) 73 N•m (54 lbf•ft)
M12 52 N•m (38 lbf•ft) 85 N•m (63 lbf•ft) 105 N•m (77 lbf•ft) 128 N•m (94 lbf•ft)
M14 85 N•m (63 lbf•ft) 135 N•m (100 lbf•ft) 170 N•m (125 lbf•ft) 200 N•m (148 lbf•ft)
XIV 219100963-002
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