Checks and repairs on mechanical components
85
To check the torque valve mechanically, proceed as follows:
Move the unit into the repair position for the upper structures, see from
page 51.
Turn the cross-shaped knob (C) counter-clockwise to gain access to the
wing nut (B).
Turn the wing nut counter-clockwise to gain access to the shims (A).
Destroy one shim.
Remove the destroyed shim.
Turn the wing nut clockwise to the stop.
Turn the cross-shaped knob clockwise until it rests against the wing nut.
Removing the shim allows the torque valve to be screwed in further which
raises the pressure.
Use the star-shaped knob to turn the torque valve in to the maximum.
Check on the pressure gage whether the maximum pressure of 700 bar
(10,000 psi) is reached.
If the maximum pressure is reached, the torque valve functions properly.
If the maximum pressure is not reached, repeat the process with the second
and possibly with the third shim.
If you have removed all shims and maximum pressure is still not achieved, the
torque valve is defective.
Replace the torque valve, see from page 86.
