Torque Specifi Cations - Husqvarna MZ54 Manual Del Operador

TECHNICAL DATA
Torque Specifi cations
Engine crankshaft bolt
Deck pulley bolts
Lug nuts
Blade bolt
The torque values shown must be used as a general guideline
U.S. Standard Hardware
Grade
Size ft./lbs
1/4
5/16 18
3/8 31
7/16 50
1/2 75
9/16 110
5/8 150
3/4 250
7/8 378
1-1/8 782
** Grade 5 - Minimum commercial quality (lower quality not recommended)
Metric Standard Hardware
Grade
Size ft./lbs
M4
M5
M6
M7
M8 13.5
M10
M12 43.5
M14 70.5
M16 108
M18 142
M20 195
M22 276
M24 353
M27 530
36
Standard 1/4" fasteners
50 ft/lb
Standard 5/16" fasteners
150 ft/lb
Standard 3/8" fasteners
75 ft/lb
Standard 7/16" fasteners
90 ft/lb
Standard 1/2" fasteners
HEX HEAD CAP SCREWS
when specifi c torque values are not given.
SAE Grade 5
Nm ft./lbs
9 12 13
24 28
42 46
68 75
102 115
149 165
203 225
339 370
512 591
1060 1410
Grade 8.8
Nm ft./lbs
1.5 2
3 4
5.2 7
8.2 11
18 18.8
24 33 35.2
59 62.2
96 100
146 147
193 202
264 275
374 390
478 498
719 735
9 ft/lb
18 ft/lb
33 ft/lb
52 ft/lb
80 ft/lb
SAE Grade 8 Flangelock Screw
w/Flangelock Nut
Nm ft./lbs
18
38 24
62 40
102
156
224
305
502
801
1912
Grade 10.9
Nm ft./lbs
2.2 3 2.7
4.5 6 5.2
7.5 10 8.2
12 16
25 21.8
48 43.5
84
136 119
199 176
274 242
373 330
529 471
675 596
996 904
Nm
33
54
Grade 12.9
Nm
3.7
7
11
15 20
30
59
75 102
161
239
328
447
639
808
1226