Operation
Operating Levers/Pedals
82 82
9811/9950-1
Excavator Controls
!MWARNING
Controls - ISO/SAE
Before operating the excavator controls always check
to see which control pattern has been selected.
Operate the machine slowly until you are familiar with
the pattern selected. If the pattern selection indicator
lamp is not illuminated, Do not operate the machine
until any faults have been rectified.
8-2-9-16
The excavator controls consist of the excavator levers A
and the swing pedal B. K
Fig 34. ( T 83).
A switch C, in the fuse panel, allows the operator to select
either the ISO or SAE excavator control pattern. One of the
indicator lamps D illuminates to show which pattern has
been selected.
The excavator levers are spring loaded to the central
position. In this position related services will not operate.
The speed and movement of the associated hydraulic
function depends on how far you move the lever - the
further you move the lever, the faster the action.
Note: The boom ram incorporates damping at the limit of
boom raise, reducing the speed of the ram and eliminating
shock loadings.
Raising the left armrest when leaving the cab prevents the
services operating. When re-entering the cab, ensure the
armrest is replaced firmly to ensure correct operation.
Most excavating movements are achieved using a
combination of both the levers and the pedals at the same
time. Practice such movements until you are familiar with
the operations that can be achieved safely.
Ensure the slew lock is unlocked before operating the
excavator controls. K
Control Locks ( T 94).
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