Manitowoc 14000 Service Maintenance Manual

Reference Only
Manitowoc Published 09-05-14, Control # 226-02 2-15
14000 SERVICE MANUAL HYDRAULIC SYSTEM
2
7. On diagnostic screens (see Figure 2-15), check pump
pressures for load drums, boom hoist, swing, and travel
pumps:
a. Make sure pressure reading for each pump is 250 to
370 psi (22 to 25.5 bar).
b. If pump pressures are not within specified range,
stop engine immediately. Determine cause of
faulty pressure and correct.
8. Stop engine.
9. Reconnect electrical (DIN) connectors removed in step
3.
10. Start and run engine at low idle.
11. With engine at low idle, extend and retract all cylinders
three times: gantry cylinders, mast cylinders, back hitch
pins, cab tilt, boom hinge pin, carbody jacks, and crawler
pins.
If oil level drops to 50%, a fault alarm will come on and a
fault symbol will appear on the active display.
HYDRAULIC FLUID LOW icon will appear on fault
display (Figure 2-2
). Fill tank immediately.
12. With engine running at low idle, slowly cycle each crane
function in both directions for at least five minutes to vent
any remaining air from hydraulic system.
13. Be sure all crane functions operate in proper direction
with relation to control handle movement.
14. Check for hydraulic leaks and correct cause if found.
15. Stop engine and fill hydraulic tank to proper level.
16. Perform System Calibration and Test in this section.
FIGURE 2-15
Typical Diagnostic Screen
(Screen for Drum 4 Shown)
Handle
Command
Drum
Speed
System
Pressure
Pump
Command
14COM3-34

Manitowoc 14000 Specifications

General

Brand	Manitowoc
Model	14000
Category	Construction Equipment
Language	English