Hyundai HL630VL Operator's Manual page 67

Pilot manipulating handle (Optional)
Pilot manipulating handle is installed on the handle manipulat-
ing box on the right side of the driver seat. It is used for con-
trolling the working device to perform the operation. The inner
side bucket manipulating handle is used to control the bucket's
movement and the outer side arm manipulating handle is used
to control the arm's movement. Both handles are at the "holding"
position under natural state, i.e., at the middle position.
When the engine is running, if you push the bucket manipulating
handle forward, the bucket will tilt forward; if you pull the bucket
manipulating handle backward, the bucket will tilt backward.
If you push the arm manipulating handle forwards, the arm will
lower; if you pull the arm manipulating handle backwards, the
arm will rise.
If you slightly move these two handles forwards or backwards,
you can control the openness of the main valve, which, together
with the throttle openness, can control the movement position
and speed of the working device in a comparatively accurate
mode.
Besides, the pilot manipulating handle also has the following
special functions:
1 Arm lifting limit:
If the arm manipulating handle is pulled backwards to the
extreme rear position, the arm manipulating handle will
be stuck by arm rise holding magnet (the arm manipulat-
ing handle will not return back to the middle position even
you release your hand), and the arm will be rising all the
time; when the arm reaches the limit position, the arm limit
switch is actuated, the arm rise holding magnet is de-en-
ergized and loses the suction force, and the arm manipu-
lating handle will automatically rerun to the middle position
under the force of spring and the arm will no longer be lift-
ed.
2-16 Operation Controls
Fig 18