5 - 1
Excavating Controls
Excavating
Excavating is controlled mainly by the movements of the left
A and right B Excavator joystick Controllers. Other
associated controls are Mode Select (see EMS Panel), the
Slew Lock button and the swing pedal.
Many excavating movements are a combination of two (or
more) movements at the same time, which requires practice.
Practice the movements singly at first and then in
combination until you are completely familiar with the effects
of all the controls.
!
CAUTION
Do not excavate on hard or rocky ground with the boom
positioned diagonally across the undercarriage. The
resulting rocking motion could cause damage to the
track gear box sprockets.
8-2-2-6
Section 1 General Information
9803/9330
Section 1
5 - 1
Issue 2*
Operation
Operation
Before starting to excavate make sure that the control lock
lever is down (see Left Console), and the Slew Lock Switch
and Servo Isolator Switch are set to OFF (see EMS Panel).
Use the decal to remind you of the movements when you are
operating.
After the engine is stopped there will be sufficient pressure
available for a limited time to enable the boom/dipper to be
lowered to a safe position.
!
CAUTION
When carrying out deep digging it is possible that part of
the boom structure may contact the undercarriage. Take
extra care when digging, to avoid damaging the machine.
8-2-8-2/2
AA
BB
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