Komatsu PC5500-6 Operation & Maintenance Manual page 236

Hydraulic mining shovel
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3.11 SLEWING AND BRAKING THE SUPERSTRUCTURE
MACHINES WITH "KMG" CONTROL
Legend for illustration Z 21760
"L"
CCW- Lever (2) to the left "L"
"N"
Neutral position
"R"
CW- Lever (2) to the right "R"
Be sure everyone is in the clear before slewing the super-
structure.
Never swing or position the attachment or load over per-
sons or vehicle cabs.
Never allow anyone to walk or work under the Shovel or
load while the Shovel is operating.
BRAKING THE SUPERSTRUCTURE
Braking of the superstructure from a slewing movement is carried
out first by returning the control lever (1) or (2), illustration Z21761
to the neutral position (N).
This procedure can be shortened by depressing pedal (3).
Swing Parking Brake
The parking brake for the swing gears is a spring loaded disk type
brake. This brake is switched ON and OFF with toggle switch (4).
The swing parking brake must only be applied with the
Superstructure at complete standstill. Applying the parking
brake with superstructure still slewing may result in severe
damage to the brake.
Switch Positions
"0" Parking brake OFF
"1" Parking brake ON
Applying the Parking Brake
Pull out toggle switch (4) against spring force and move down to
position "1".
236
WARNING
CAUTION
OPERATION

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