TM 5-3895-382-24
1.14.
Torque Specifications
For additional torque specifications, not included in this
section, refer to Torque Specifications, SENR3130,
available from your Caterpillar dealer.
Torques for Ground Engaging Tool Bolts
Recommended Torque 1
Bolt Size
Inch
N· m
lb ft
5/8
270 ± 40
200 ± 30
3/4
475 ± 60
350 ± 45
7/8
750 ± 90
550 ± 65
1
1150 150
850 ±110
1 1/4
2300 ± 300
1 ± 220
1
These values are applicable only to Caterpillar cutting edge bolts.
Torques for Standard Hose Clamps Worm Drive
Band Type
NOTICE
The following chart gives the torques for initial
installation of hose clamps on new hose and for
reassembly or retightening of hose clamps on
existing hose.
Initial Installation
Torque on New Hose
Clamp Width
N· m 1
lb ft
16 mm (.625 in)
7.5 0.5
65 ± 5
13.5 mm (.531 in)
4.5 ± 0.5
40 ± 5
8 mm (.312 in)
0.9 ± 0.2
8 ± 2
Reassembly or Retightening
Torque
Clamp Width
N· m 1
lb ft
16 mm (.625 in)
4.5 ± 0.5
40 ± 5
13.5 mm (.531 in)
3.0 ± 0.5
25 ± 5
8 mm (.312 n)
0.7 0.2
6 ± 2
1
Newton Meter (Nm) is approximately the same as 0.1 mkg.
Torques for Standard Fasteners
NOTICE
The following charts give general torques for bolts,
nuts and taperlock studs of SAE Grade 5 or better
quality.
Torques for Bolts and Nuts
Standard Bolt and Nut Torque
Thread Size
Inch
N· m 1
lb ft
1/4
12 ± 30
9 ± 2
5/6
25 6
18 ±4.5
3/8
47±9
35 7
7/16
70 ± 15
50 ± 11
1/2
105 ± 20
75 ±15
9/16
160 ± 30
120 ± 20
5/8
215 ± 40
160 ± 30
3/4
370 ± 50
275 ± 37
7/8
620 ± 80
460 ± 60
1
900 ± 100
660 ± 75
1 1/8
1300 ± 150
950 ±100
1 1/4
1800 ± 200
1325 ± 150
1 3/8
2400 ± 300
1800 ± 225
1 1/2
3100 ± 350
2300 ± 250
1
Newton Meter (Nm) is approximately the same as 0.1 mkg.
Torques for Taperlock Studs
Standard Taperlock Stud Torque
Thread Size
Inch
N· m 1
lb ft
1/4
8 ± 3
6 ± 2
5/6
17 5
13 ± 4
3/8
35 ±5
26 4
7/16
45 ± 10
33 ± 7
1/2
65 ±10
48 7
5/8
110 ±20
80 ±15
3/4
170 ± 30
125 ± 22
7/8
260 ± 40
190 ± 30
1
400 ± 60
300 ± 45
1 1/8
500 ± 70
370 ± 50
1 1/4
650 ± 80
480 ± 60
1 3/8
750 ± 90
550 ± 65
1 1/2
870 ± 100
640 ± 75
1
Newton Meter (Nm) is approximately the same as 0.1 mkg.
Maintenance Section
Torque Specifications
1-21
Section III. ADDITIONAL MAINTENANCE INSTRUCTIONS
