
Reference
Only
HYDRAULIC SYSTEM
18000 SERIVCE/MAINTENANCE MANUAL
2-28
Published 12-05-17, Control # 035-23
HYDRAULIC SYSTEM CALIBRATION
PROCEDURES
Calibration Description
To ensure proper operation of the crane functions, the
following items must be calibrated or tested at the intervals
specified in this section:
•
Pressure Senders
•
Controls (pump centers)
•
Pump Pressure
•
Charge Pressure
See
for identification of the controls used for
calibration and testing.
Pressure Sender Calibration
for the following procedure.
Pressure sender line of calibration screen indicates if each
system’s pressure sender null (0) is within 0.65-1.35 volts.
Pressure senders must be calibrated at the following
intervals:
•
When a new controller node is installed
•
When a pump is replaced
•
When a pump control (EDC or PCP) is replaced
•
When a pressure sender is replaced
•
When displayed pressure is not correct
Be aware that if there is any residual pressure in the
system during the calibration process, the display
pressure reading in the cab may not reflect actual
system pressure. See Note on
.
•
Every 6 months
To perform pressure sender calibration, proceed as follows:
1.
Stop engine and turn ignition switch to RUN position.
2.
Access calibration screen as follows:
a.
Select and confirm SETUP mode to activate
calibration program.
b.
Turn LIMIT BYPASS switch clockwise and hold.
c.
SCROLL UP at least one screen.
WARNING
Moving Load Hazard!
With engine running, crane functions (drums, boom hoist,
swing, travel) can operate unexpectedly while system
components are being calibrated or tested.
To prevent crane functions from moving, turn PARK ON
for all crane functions before you perform calibration or
testing procedures.
P1744
Digital
Display
Scroll
Up-Down
Rocker
FIGURE 2-23
Crane
Mode
Switch
Limit Bypass
Switch
FIGURE 2-24
Binary
No.
Pressure Sender
(Bank 1)
Binary
No.
Pressure Sender
(Bank 2)
1
Drum 1/3 (Main Hoist)
1
Swing Left
2
Not Used
2
Swing Right
4
Drum 2/5 (Main Hoist)
4
High Pressure
Accessory Accumulator
8
Accessory System
16
Drum 4 (Boom Hoist)
32
Drum 6 (Luffing Hoist)
64
Left Track
128
Right Track
* PRESSURE SENDER CAL
CONTROL CAL
PUMP PRESSURE TEST
CHARGE PRESSURE
0%
16
0
Percent
Complete
Bank 1 Binary
Number
Bank 2 Binary
Number
Содержание 18000
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