INTRODUCTION TIGHTENING TORQUE 2. Apply the half of the recommended torque value. Tighten fasteners to torque mentioned in ex- ploded views and/or text, When they are not specified, refer to following table. NOTICE Be sure to use proper tightening torque for the proper strength grade. WARNING Torque wrench tightening specifications must be strictly adhered to. Locking devices (e.g.: locking tabs, elastic stop nuts, self-locking fasteners, cotter pins, etc.) must be replaced with new ones. NOTE: When possible, always apply torque on the nut. 3. Torque at the recommended torque value. NOTE: Always torque screws, bolts and/or nuts in a crisscross sequence.
In order to avoid a poor assembling, tighten screws, bolts or nuts in accordance with the following procedure: 1. Manually screw all screws, bolts and/or nuts.
smr2009-011 XV $ .0 !/ / 1 ,/1 /3 - 2 2 2 2 (2 2 (2 2 (2 2( 2( 2( 2( 2( 2( 2( $ .0 !/ / 1 /3 - ; FASTENER SIZE FASTENER GRADE/TORQUE 5.8 Grade 8.8 Grade 10.9 Grade 12.9 Grade M4 1.5 – 2 N•m (13 – 18 lbf•in) 2.5 – 3 N•m (22 – 27 lbf•in) 3.5 – 4 N•m (31 – 35 lbf•ft) 4 – 5 N•m (35 – 44 lbf•ft) M5 3 – 3.5 N•m (27 – 31 lbf•ft) 4.5 – 5.5 N•m (40 – 47 lbf•ft) 7 – 8.5 N•m (62 – 75 lbf•ft) 8 – 10 N•m (71 – 89 lbf•ft) M6 6.5 – 8.5 N•m (58 – 75 lbf•ft) 8 – 12 N•m (71 – 106 lbf•ft) 10.5 – 15 N•m (93 – 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)