Tightening Torques - BRP BOMBARDIER DS250 2006 Shop Manual

INTRODUCTION

TIGHTENING TORQUES

Tighten fasteners to torque mentioned in exploded views and/or text, When they are not specified, refer
to following table.
Torque wrench tightening specifications must strictly be adhered to.
Locking devices (e.g.: locking tabs, elastic stop nuts, self-locking fasteners, etc.) must be installed
or replaced with new ones, where specified. If the efficiency of a locking device is impaired, it
must be renewed.
In order to avoid a poor assembling, tighten screws, bolts or nuts in accordance with the following pro-
cedure:
– Manually screw all screws, bolts and/or nuts.
– Apply the half of the recommended torque value.
CAUTION: Be sure to use the proper tightening torque for the proper strength grade.
NOTE: When possible, always apply torque on the nut.
– Torque to the recommended torque value.
NOTE: Always torque screws, bolts and/or nuts in a criss-cross sequence.
FASTENER
SIZE
5.8 Grade
1.5 – 2 N•m
M4
(13 – 18 lbf•in)
3 – 3.5 N•m
M5
(27 – 31 lbf•in)
6.5 – 8.5 N•m
M6
(58 – 75 lbf•in)
M8 15 N•m (11 lbf•ft)
M10 29 N•m (21 lbf•ft)
M12 52 N•m (38 lbf•ft)
M14 85 N•m (63 lbf•ft)
XVI
WARNING
FASTENER GRADE/TORQUE
8.8 Grade
2.5 – 3 N•m
(22 – 27 lbf•in)
4.5 – 5.5 N•m
(40 – 47 lbf•in)
8 – 12 N•m
(71 – 106 lbf•in)
24.5 N•m (18 lbf•ft) 31.5 N•m (23 lbf•ft)
48 N•m (35 lbf•ft)
85 N•m (63 lbf•ft) 105 N•m (77 lbf•ft)
135 N•m (100 lbf•ft) 170 N•m (125 lbf•ft)
10.9 Grade
3.5 – 4 N•m
(31 – 35 lbf•in)
7 – 8.5 N•m
(62 – 75 lbf•in)
10.5 – 15 N•m
16 N•m (142 lbf•in)
(93 – 133 lbf•in)
40 N•m (30 lbf•ft)
61 N•m (45 lbf•ft) 72.5 N•m (53 lbf•ft)
127.5 N•m (94 lbf•ft)
200 N•m (148 lbf•ft)
12.9 Grade
4 – 5 N•m
(35 –44 lbf•in)
8 – 10 N•m
(71 – 89 lbf•in)
vmr2006-060