6.4 Torque
6.4.1 Pressure/torque chart
The maximum operating pressure for all HYTORC pump units is 690 bar (10,000 psi).
Warning:
• Make sure that the maximum operating pressure of the pump unit is not
higher than the maximum permitted pressure of 690 bar (10,000 psi).
Each HYTORC torque wrench has its own pressure/torque chart. The pressure/torque
chart is separately supplied with your HYTORC torque wrench. Refer to the pressure/
torque chart to find the required torque (Nm / ft.lb.) and read the required pressure (bar /
psi).
Example (Stealth 2)
Pressure
Torque
bar psi Nm ft.lb.
104 1,500 377 278
110 1,600 403 297
124 1,800 456 336
138 2,000 508 375
152 2,200 559 413
165 2,400 610 450
179 2,600 661 488
6.4.2 Setting the torque
Warning:
• Always set the pressure from low pressure to high pressure.
Procedure
1. Loosen the wingnut (A) on the
pressure control valve (B) of the
pump unit.
2. Turn the pressure control valve (B)
counterclockwise to set the
pressure as low as possible.
3. Put the tool on the ground or on
another safe location.
4. Start the pump:
• Electric pump unit: Press the
start button (C) on the remote
control.
• Pneumatic pump unit: Set the
on/off switch (E) to the on
position.
The pump starts to operate. The
piston in the tool moves to the fully retracted position.
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