Torque Specification; Specific Torque - Jacobsen Super LF 1880 Dealer's Manual

Dealer manual for tractor mower
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5
ADJUSTMENTS

5.17 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. Textron Golf, Turf & Specialty Products 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.
Textron Golf, Turf & Specialty Products uses Grade 5 bolts as standard, unless otherwise noted.
AMERICAN NATIONAL STANDARD FASTENERS
SIZE
UNITS
#6-32
in-lbs (Nm)
#8-32
in-lbs (Nm)
#10-24
in-lbs (Nm)
#10-32
in-lbs (Nm)
#12-24
in-lbs (Nm)
1/4-20
in-lbs (Nm)
1/4-28
in-lbs (Nm)
5/16-18
in-lbs (Nm)
5/16-24
in-lbs (Nm)
3/8-16
ft-lbs (Nm)
3/8-24
ft-lbs (Nm)
SIZE
UNITS
M4
Nm (in-lbs)
M5
Nm (in-lbs)
M6
Nm (in-lbs)
M8
Nm (in-lbs)
M10
Nm (ft-lbs)
M12
Nm (ft-lbs)
M14
Nm (ft-lbs)

5.18 SPECIFIC TORQUE ________________________________________________________

1. Ball joints: 30-35 ft-lb (40.5 - 47.2 Nm).
2. Bedknife shoe: 25 - 37 ft-lb (34 - 50 Nm).
GB-20
CAUTION
GRADE 5
GRADE 8
20 (2.3)
24 (2.7)
30 (3.4)
35 (4.0)
45 (5.1)
40 (4.5)
50 (5.7)
50 (5.7)
65 (7.3)
95 (10.7)
125 (14.1)
95 (10.7)
150 (17.0)
200 (22.6)
270 (30.5)
240 (27.1)
300 (33.9)
30 (40.7)
40 (54.2)
35 (47.5)
45 (61.0)
METRIC FASTENERS
4.8
5.8
1.2 (11)
1.7 (15)
2.5 (22)
3.2 (28)
4.3 (38)
5.7 (50)
10.5 (93)
13.6 (120)
21.7 (16)
27.1 (20)
36.6 (27)
47.5 (35)
58.3 (43)
76.4 (55)
AMERICAN NATIONAL STANDARD FASTENERS
SIZE
UNITS
7/16-14
ft-lbs (Nm)
7/16-20
ft-lbs (Nm)
1/2-13
ft-lbs (Nm)
1/2-20
ft-lbs (Nm)
9/16-12
ft-lbs (Nm)
9/16-18
ft-lbs (Nm)
5/8-11
ft-lbs (Nm)
5/8-18
ft-lbs (Nm)
3/4-10
ft-lbs (Nm)
3/4-16
ft-lbs (Nm)
7/8-14
ft-lbs (Nm)
8.8
10.9
2.9 (26)
4.1 (36)
5.8 (51)
8.1 (72)
9.9 (88)
14.0 (124)
24.4 (216)
33.9 (300)
47.5 (35)
66.4 (49)
82.7 (61)
116.6 (86)
131.5 (97)
184.4 (136)
3. Steering wheel nut: 25 - 30 ft-lb (34 - 41 Nm).
4. Wheel Bolts: 85-95 ft.lbs. (115-128 Nm) .
GRADE 5
GRADE 8
50 (67.8)
65 (88.1)
55 (74.6)
70 (94.9)
75 (101.7)
100 (135.6)
85 (115.3)
110 (149.2)
105 (142.4)
135 (183.1)
115 (155.9)
150 (203.4)
150 (203.4)
195 (264.4)
160 (217.0)
210 (284.8)
170 (230.5)
220 (298.3)
175 (237.3)
225 (305.1)
300 (406.8)
400 (542.4)
Non Critical
Fasteners into
12.9
Aluminum
5.0 (44)
2.0 (18)
9.7 (86)
4.0 (35)
16.5 (146)
6.8 (60)
40.7 (360)
17.0 (150)
81.4 (60)
33.9 (25)
139.7 (103)
61.0 (45)
219.7 (162)
94.9 (70)

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