Doosan D20S-5 Operation & Maintenance Manual page 137

Torque Specifications Torque Specifications
Metric Hardware Metric Hardware
Most of the nuts, bolts, studs, and threaded holes in Most of the nu
your lift truck are metric. In this manual we provide your lift truck are metric. In this manual we provide
specifications in both metric and U.S. customary specifications in both metric and U.S. customary
measurement. Always replace metric hardware with measurement. Always replace metric hardware with
metric hardware. See the parts books for proper metric hardware. See the parts books for proper
replacement. replacement.
NOTE: For proper fit, use only metric tools on NOTE: For proper fit, use only metric tools on
metric hardware. Non-metric tools might metric hardware. Non-metric tools might
slip and cause injury. slip and cause injury.
Torque for Standard Hose Clamps Torque for Standard Hose Clamps
- Worm Drive - Worm Drive
The chart below gives the torques for initial The chart below gives the torques for initial
installation of hose clamps on new hose and for installation of hose clamps on new hose and for
reassembly or retightening of hose clamps on reassembly or retightening of hose clamps on
existing hose. existing hose.
Clamp Width Clamp Width
1 1 6 6 m m m m ( ( . . 6 6 2 2 5 5 i i n n ) )
1 1 3 3 . . 5 5 m m m m ( ( . . 5 5 3 3 1 1 i i n n ) )
8 8 m m m m ( ( . . 3 3 1 1 2 2 i i n n ) )
Clamp Width Clamp Width
1 1 6 6 m m m m ( ( . . 6 6 2 2 5 5 i i n n ) )
1 1 3 3 . . 5 5 m m m m ( ( . . 5 5 3 3 1 1 i i n n ) )
8 8 m m m m ( ( . . 3 3 1 1 2 2 i i n n ) )
1 1
1 Newton meter (N 1 Newton meter (N
ts, bolts, studs, and threaded holes in
NOTICE NOTICE
Initial Insta Initial Installatio llation n
Torque On New Hose Torque On New Hose
1 1
N N • • m m
7 7 . . 5 5 ± ± 0 0 . . 5 5 6 6 5 5 ± ± 5 5
4 4 . . 5 5 ± ± 0 0 . . 5 5 4 4 0 0 ± ± 5 5
0 0 . . 9 9 ± ± 0 0 . . 2 2 8 8 ± ± 2 2
Reassembly or Reassembly or
Retightening Retightening
Torque On Existing Hose Torque On Existing Hose
1 1
N N • • m m
4 4 . . 5 5 ± ± 0 0 . . 5 5 4 4 0 0 ± ± 5 5
3 3 . . 0 0 ± ± 0 0 . . 5 5 2 2 5 5 ± ± 5 5
0 0 . . 7 7 ± ± 0 0 . . 2 2 6 6 ± ± 2 2
• •
m) is approximately the same as 0.1 kg m) is approximately the same as 0.1 kg
-134- -134-
Torque for Standard Bolts, Nuts, Torque for Standard Bolts, Nuts,
and Taperlock Studs and Taperlock Studs
The two charts below give general torques for bolts, The two charts below give general torques for b
nuts, and taperlock studs of SAE Grade 5 or better nuts, and taperlock studs of SAE Grade 5 or better
quality. quality.
Torques for Bolts and Nuts with Torques for Bolts and Nuts with
Standard Threads Standard Threads
Thread Size Thread Size
Inch Inch
1/4 1/4
5/16 5/16
3/8 3/8
7/16 7/16
1/2 1/2
9/16 9/16
5/8 5/8
lb lb • • in in
3/4 3/4
7/8 7/8
1 1 1/8
1 1 1/4
1 1 3/8
1 1 1/2
lb lb • • in in
1 1
1 Newton meter (N 1 Newton meter (N
• •
m. m.
Maintenance Section Maintenance Section
NOTICE NOTICE
Standard Nut and Bolt Torque Standard Nut and Bolt Torque
N N • • m m
12 12 ± ± 4 4
25 ± ± 7 7 25
45 ± ± 7 7 45
70 70 ± ± 15 15
100 ± ± 15 100 15
150 150 ± ± 20 20
200 200 ± ± 25 25
360 ± ± 50 360 50
570 ± ± 80 570 80
1 1 875 ± ± 100 875 100
1/8 1100 ± ± 150 1100 150
1/4 1350 1350 ± ± 175 175
3/8 1600 1600 ± ± 200 200
1/2 2000 ± ± 275 2000 275
• •
m) is approximately the same as 0.1 kg m) is approximately the same as 0.1 kg
olts,
lb lb • • ft ft
9 9 ± ± 3 3
18 18 ± ± 5 5
33 33 ± ± 5 5
50 ± ± 11 50 11
75 75 ± ± 11 11
110 ± ± 15 110 15
150 ± ± 18 150 18
270 270 ± ± 37 37
420 420 ± ± 60 60
640 640 ± ± 75 75
820 820 ± ± 110 110
1000 ± ± 130 1000 130
1180 1180 ± ± 150 150
1480 1480 ± ± 200 200
m.
• •
m.