Torque Specification; Specific Torque - Jacobsen Tri King Handbuch
Triplex mower with rops
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9.20 TORQUE SPECIFICATION ___________________________________________________
All torque values included in these charts are approximate and are for reference only. Use of these torque values is
at your sole risk. Jacobsen is not responsible for any loss, claim, or damage arising from the use of these charts.
Extreme caution should always be used when using any torque value.
Jacobsen uses Grade 5 Plated bolts as standard, unless otherwise noted. For tightening plated bolts, use the value
given for lubricated.
SIZE
UNITS
Lubricated
#6-32
in-lb (Nm)
–
#8-32
in-lb (Nm)
–
#10-24
in-lb (Nm)
–
#10-32
in-lb (Nm)
–
#12-24
in-lb (Nm)
–
1/4-20
in-lb (Nm)
75 (8.4)
1/4-28
in-lb (Nm)
85 (9.6)
5/16-18
in-lb (Nm)
157 (17.7)
5/16-24
in-lb (Nm)
173 (19.5)
3/8-16
ft-lb (Nm)
23 (31.1)
3/8-24
ft-lb (Nm)
26 (35.2)
SIZE
UNITS
Lubricated
Nm (in-lb)
–
M4
Nm (in-lb)
1.80 (16)
M5
Nm (in-lb)
3.05 (27)
M6
Nm (in-lb)
7.41 (65)
M8
Nm (ft-lb)
14.7 (11)
M10
Nm (ft-lb)
25.6 (19)
M12
Nm (ft-lb)
40.8 (30)
M14
9.21 SPECIFIC TORQUE ________________________________________________________
1. Tie rod ball joints: (2) 30 - 35 ft. lb. (41 - 47 Nm)
2. Engine drain plugs: 22 ft. lb. (30 Nm)
3. Steering ball joints: 50 - 55 ft. lb. (68 - 75 Nm)
AMERICAN NATIONAL STANDARD FASTENERS
GRADE 5
GRADE 8
Dry
Lubricated
20 (2.3)
–
24 (2.7)
–
35 (4.0)
–
40 (4.5)
–
50 (5.7)
–
100 (11.3)
107 (12.1)
115 (13.0)
120 (13.5)
210 (23.7)
220 (24.8)
230 (26.0)
245 (27.6)
31 (42.0)
32 (43.3)
35 (47.4)
37 (50.1)
4.6
Dry
Lubricated
–
–
2.40 (21)
4.63 (41)
4.07 (36)
7.87 (69)
9.98 (88)
19.1 (69)
19.6 (14)
37.8 (29)
34.1 (25)
66.0 (48)
54.3 (40)
105 (77)
NOTICE
SIZE
UNITS
Dry
–
7/16-14
ft-lb (Nm)
30 (3.4)
7/16-20
ft-lb (Nm)
45 (5.1)
1/2-13
ft-lb (Nm)
50 (5.7)
1/2-20
ft-lb (Nm)
65 (7.3)
9/16-12
ft-lb (Nm)
143 (16.1)
9/16-18
ft-lb (Nm)
163 (18.4)
5/8-11
ft-lb (Nm)
305 (34.4)
5/8-18
ft-lb (Nm)
325 (36.7)
3/4-10
ft-lb (Nm)
44 (59.6)
3/4-16
ft-lb (Nm)
50 (67.8)
7/8-14
ft-lb (Nm)
METRIC FASTENERS
8.8
10.9
Dry
Lubricated
–
–
6.18 (54)
6.63 (59)
10.5 (93)
11.3 (102)
25.5 (226)
27.3 (241)
50.5 (37)
54.1 (40)
88.0 (65)
94.5 (70)
140 (103)
150 (110)
4. Steering wheel nut: 30-40 ft. lb (41 - 51 Nm)
5. Wheel hardware:65 - 85 ft. lb. (88 - 116 Nm)
ADJUSTMENTS
GRADE 5
Lubri-
Dry
cated
37 (50.1)
50 (67.8)
42 (56.9)
55 (74.6)
57 (77.2)
75 (101)
64 (86.7)
85 (115)
82 (111)
109 (148)
92 (124)
122 (165)
113 (153)
151 (204)
128 (173)
170 (230)
200 (271)
266 (360)
223 (302)
298 404
355 (481)
473 (641)
12.9
Dry
Lubricated
–
3.83 (34)
5.11 (45)
8.84 (78)
7.75 (68)
10.3 (910
15.0 (133)
13.2 (117)
17.6 (156)
36.5 (323)
32.0 (283)
42.6 (377)
72.2 (53)
63.3 (46)
84.4 (62)
125 (92)
110 (81)
147 (108)
200 (147)
175 (129)
234 (172)
9
GRADE 8
Lubri-
Dry
cated
53 (71.8)
70 (94.9)
59 (80.0)
78 (105)
80 (108)
107 (145)
90 (122)
120 (162)
115 (156)
154 (209)
129 (174)
172 (233)
159 (215)
211 (286)
180 (244)
240 (325)
282 (382)
376 (509)
315 (427)
420 (569)
500 (678)
668 (905)
Non Critical
Fasteners
into
Aluminum
Dry
2.0 (18)
4.0 (35)
6.8 (60)
17.0 (150)
33.9 (25)
61.0 (45)
94.9 (70)
49
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