Manitowoc 2250 Service And Maintenance Manual

Reference Only
HYDRAULIC AND AIR SYSTEMS 2250 SERVICE/MAINTENANCE MANUAL
2-12
Published 11-06-15, Control # 040-13
1. Access diagnostic screens by pressing limit bypass
switch while scrolling up with scroll switch.
2. Scroll until control calibration screen (Figure 2-13
)
appears.
3. Increase engine speed to high idle and press limit
bypass switch.
NOTE: It is normal for yellow operating limits light to come
on during this procedure.
4. Calibration process does not start if engine is not at high
idle. Calibration process stops if engine speed is
decreased during calibration. In either case the screen
in Figure 2-14
appears.
5. Repeat step 3.
6. When calibration process starts, the percent of
completion screen appears as shown in Figure 2-15
. It
takes approximately 2 minutes to complete process.
7. When calibration is complete, start screen in Figure 2-13
reappears.
8. Check the data bank in the upper right corner of the
screen. If a control/pump failed the test, the fail item(s)
binary number(s) is displayed.
Table 2-12 Controls Binary Numbers
PRESSURE SENDER REPLACEMENT
See Figure 2-16 for identification of pressure senders.
General
The instructions in this folio must be followed to ensure safe
removal of faulty pressure senders and to ensure proper
operation after installation of new pressure senders.
1. Lower all loads to ground.
2. Move all control handles to off and park all crane
functions.
3. Stop the engine.
4. Place a suitable container under pressure senders to
catch oil leakage.
Perform steps 5
-9 only at faulty pressure senders.
5. Disconnect electric plug from pressure senders.
6. Slowly loosen pressure senders only enough to allow
any remaining pressure to exhaust.
7. Remove pressure senders.
8. Install new pressure senders and connect electric cords.
Pressure senders have pipe threads. Be sure to install
thread sealant.
9. Bleed pressure senders as follows:
a. Connect bleed lines with shut-off valves to couplers
on pressure sender manifold. Open valve in bleed
lines. Use a suitable container to catch oil flow.
b. With all control handles off, start engine and allow it
to idle at 950 – 1,000 RPM.
c. Observe oil flowing from bleed lines.
d. Close valve in bleed lines when clear oil flows (no
air bubbles in oil).
e. Stop the engine.
f. Remove bleed lines from couplers at pressure
senders.
10. Calibrate pressure senders.
Binary
No.
Pump
No.
Description
1 1 Main Hoist
2 2 Boom & Luffing Drums
4 3 Swing Right
8 3 Swing Left
16 4 Drum 9 on MAX-ER
FIGURE 2-13
CONTROL CALIBRATION
BYPASS TO BEGIN
FIGURE 2-14
CONTROL CALIBRATION
HIGH IDLE REQUIRED
FIGURE 2-15
CONTROL CALIBRATION 6
___% COMPLETE
WARNING
High Pressure Oil Hazard!
Do not attempt to remove a pressure sender unless
following steps are performed. High pressure oil will
exhaust from pressure sender ports.

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English