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MAINTENANCE MANUAL
PRESS TO PRESS DOOR
CHECK FREE (RIVETED)
OPEN AT EDGE FOR
PLAY FOR LATCH FREE PLAY
0.01 TO 0.03 INCH
CHECK A-A
Hartwell Latches, Series 5100, Adjustment
Figure 501
E81638
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STANDARD TORQUE VALUES - MAINTENANCE PRACTICES
______________________________________________
TASK 20-11-00-912-001
1. Refer to the Figures that Follow for the Torque Data____________________________________________________
A. General
(1)
When it is not easy to get access use an adapter. For this condition, a corrected torque wrench value is necessary. Follow the examples in Fig. 201 to find the corrected torque wrench value T1 when you use an adapter.
(2)
The torque values shown in Fig. 202 give data for the correct quantity of pressure necessary to tighten fasteners. Some fasteners have threads that are lubricated. Some fasteners have threads that are not lubricated. The values which are necessary to tighten the fastener by the nut or by the bolt are also supplied.
(3)
The minimum torque necessary to turn the self-locking nuts must be the value shown in Fig. 203. If the nut turns too easily or turns too hard when you install the nut on the bolt, refer to Fig. 203 to do a test of the nut.
(4)
Torque values are given in Fig. 204 for Reduced Head Bolts.
(5)
Torque values are given in Fig. 205 for Rigid Tube Coupling Connectors.
(6)
Torque values are given in Fig. 206 for Pipe Thread Fittings.
(7)
Torque values are given in Fig. 207 for Low Pressure and Return Line Fittings.
(8)
Torque values are given in Fig. 208 for High Pressure Line Flareless Fittings with lubricated threads.
(9)
Torque values are given in Fig. 209 for V-Band Clamps, Channel Band Clamps, Duct Support Clamps, Hose Clamps and Roylyn Couplings.
(10)
Make sure that one male thread (minimum), plus the chamfer of the male thread, extends above the top of the nut. If the male thread does not have a chamfer, the male thread must extend one and one-half threads (minimum) above the top of the nut.
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MAINTENANCE MANUAL
TA
T =
1
A+B
A = TORQUE LENGTH OF TORQUE WRENCH B = TORQUE LENGTH OF ADAPTER T = ACTUAL TORQUE OF NUT T = TORQUE OF WRENCH SHOWN
1
(CORRECTED TORQUE)
EXAMPLE A = 12 IN. B = 3 IN. T = 160 POUND-INCHES
160 x 12T =
1
12+3
T = 128 POUND-INCHES
1
Torque Wrench Adapter
Figure 201 (Sheet 1)
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757 MAINTENANCE MANUAL
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