137 S450 Operation & Maintenance Manual
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)
See the SERVICE SCHEDULE for the correct service interval. (See SERVICE SCHEDULE on Page 134.)
Inspecting The BICS™ (Engine STOPPED – Key ON)
Figure 169
1. Sit in operator’s seat. Turn key switch to RUN. Lower
seat bar and disengage parking brake. Press the
PRESS TO OPERATE LOADER button (Item 6). Two
BICS™ lights (Items 1 and 2) [Figure 169] [SEAT
BAR and LIFT AND TILT VALVE] on left instrument
panel must be OFF. The PRESS TO OPERATE
LOADER button will light.
2. Raise seat bar fully. All three BICS™ lights (Items 1,
2, and 3) [Figure 169] [SEAT BAR, LIFT AND TILT
VALVE, and PARKING BRAKE] on left instrument
panel must be ON. The PRESS TO OPERATE
LOADER button light will turn OFF.
Inspecting Deactivation Of The Auxiliary Hydraulics
System (Engine STOPPED – Key ON)
3. Sit in operator’s seat, lower seat bar, and press the
PRESS TO OPERATE LOADER button (Item 6).
Press the Auxiliary Hydraulics button (Item 5). The
auxiliary hydraulics light will turn ON (Item 4)
[Figure 169]. Raise the seat bar. The light will turn
OFF.
Inspecting The Seat Bar Sensor (Engine RUNNING)
4. Sit in operator’s seat, lower seat bar, engage parking
brake, and fasten seat belt.
5. Start engine and operate at low idle. Press the
PRESS TO OPERATE LOADER button. While raising
the lift arms, raise the seat bar fully. The lift arms must
stop. Repeat using the tilt function.
Inspecting The Traction Lock And Parking Brake
(Engine RUNNING)
6. Fasten seat belt, disengage parking brake, press the
PRESS TO OPERATE LOADER button, and raise
seat bar fully. Move steering levers or joystick(s)
slowly forward and backward. The TRACTION lock
must be engaged. Lower the seat bar. Press the
PRESS TO OPERATE LOADER button.
7. Engage parking brake and move steering levers or
joystick(s) slowly forward and backward. The
TRACTION lock must be engaged. See your Bobcat
dealer for service if loader fails to stop.
NOTE: The PARKING BRAKE light on the left
instrument panel will remain ON until the
engine is started, the PRESS TO OPERATE
LOADER button is pressed, and the parking
brake is disengaged.
Inspecting The Lift Arm Bypass Control
8. Raise the lift arms 2 m (6 ft) off the ground. Stop
engine. Turn lift arm bypass control knob 90°
clockwise. Pull up and hold lift arm bypass control
knob until lift arms slowly lower.
Inspecting Deactivation Of Lift And Tilt Functions
(ACS And SJC)
9. Sit in operator’s seat and fasten seat belt. Lower seat
bar, start engine, and press the PRESS TO
OPERATE LOADER button.
10. Raise lift arms approximately 2 m (6 ft) off the ground.
11. Turn key switch to STOP and wait for the engine to
come to a complete stop.
12. Turn key switch to RUN. Press the PRESS TO
OPERATE LOADER button, move the control (foot
pedal, hand control, or joystick) to lower the lift arms.
Lift arms must not
lower.
13. Move the control (foot pedal, hand control, or joystick)
to tilt the bucket (or attachment) forward. The bucket
(or attachment) must not
tilt forward.
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