Torque Specification; Specific Torque - Jacobsen R-311T 69171 Parts & Maintenance Manual

3.17 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
Jacobsen uses Grade 5 Plated bolts as standard unless otherwise noted. For tightening plated bolts use the value given for
lubricated.
SIZE UNITS GRADE 5
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
M4
Nm (in-lb) –
M5
Nm (in-lb) 1.80 (16)
M6
Nm (in-lb) 3.05 (27)
M8
Nm (in-lb) 7.41 (65)
M10
Nm (ft-lb) 14.7 (11)
M12
Nm (ft-lb) 25.6 (19)
M14
Nm (ft-lb) 40.8 (30)

3.18 SPECIFIC TORQUE ________________________________________________________

Tie Rod Ball Joints (2): 30 ft lb. (40 Nm).
Steering Cylinder Ball Joints (2): 40 ft lb (54 Nm).
Blade Adapter Bolts (14): 35 - 40 ft lb (47 - 54 Nm).
Center Blade Bolts (7): 67-83 ft lb (91-112 Nm).
Rear Wheel Bolts (10): 40 - 50 ft lb (54 - 68 Nm).
caution should always be used when using any torque value.
AMERICAN NATIONAL STANDARD FASTENERS
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)
METRIC FASTENERS
4.6 8.8
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)
10.9
Dry Lubricated Dry
– –
6.18 (54) 6.63 (59) 8.84 (78)
10.5 (93) 11.3 (102) 15.0 (133)
25.5 (226) 27.3 (241) 36.5 (323)
50.5 (37) 54.1 (40) 72.2 (53)
88.0 (65) 94.5 (70) 125 (92)
140 (103) 150 (110) 200 (147)
Front Wheel Bolts (10): 85-95 ft lb (115 - 129 Nm)
ADJUSTMENTS
GRADE 5
Lubri- Dry Lubri-
cated cated
37 (50.1) 50 (67.8) 53 (71.8)
42 (56.9) 55 (74.6) 59 (80.0)
57 (77.2) 75 (101) 80 (108)
64 (86.7) 85 (115) 90 (122)
82 (111) 109 (148) 115 (156)
92 (124) 122 (165) 129 (174)
113 (153) 151 (204) 159 (215)
128 (173) 170 (230) 180 (244)
200 (271) 266 (360) 282 (382)
223 (302) 298 404 315 (427)
355 (481) 473 (641) 500 (678)
12.9
Lubricated Dry
– 3.83 (34) 5.11 (45)
7.75 (68) 10.3 (910
13.2 (117) 17.6 (156)
32.0 (283) 42.6 (377)
63.3 (46) 84.4 (62)
110 (81) 147 (108)
175 (129) 234 (172)
3
GRADE 8
Dry
70 (94.9)
78 (105)
107 (145)
120 (162)
154 (209)
172 (233)
211 (286)
240 (325)
376 (509)
420 (569)
668 (905)
Non Critical
Fasteners
into
Aluminum
2.0 (18)
4.0 (35)
6.8 (60)
17.0 (150)
33.9 (25)
61.0 (45)
94.9 (70)
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