Manitowoc 14000 Service And Maintenance Manual

Reference Only
Manitowoc Published 09-10-14, Control # 065-24 2-15
14000 SERVICE MANUAL HYDRAULIC SYSTEM
2
High Pressure Accessory System Checks
To operate these items, use the remote control, overhead
console switches, and manual handles on carbody. High
pressure accessories include:
• Live mast cylinders
• Gantry cylinders
• Boom hinge pin cylinder
• Cab tilt cylinder
• Carbody jacking cylinders
• Crawler pin cylinders
Gantry Cylinders
Access remote control in left side enclosure and connect to
node 3 controller, connector W36.
1. Use gantry toggle to raise and lower the gantry several
times to remove air from system.
2. Scroll to Diagnostic screen to verify that 4,000 psi (275
bar) is present when the gantry is extended.
Live Mast Cylinders
Perform the following procedure when the mast is lowered.
1. Use mast arm cylinder switch on overhead panel in cab.
2. Fully raise and lower mast cylinders three to four times
to remove air from mast cylinders.
3. Scroll to Diagnostic screen to verify that 4,000 psi (275
bar) is present when mast cylinders are fully extended
(stalled) and 1,200 psi (88 bar) is present when mast
cylinders are retracted.
Boom Hinge Pin Cylinder
Use boom hinge pin switch on overhead panel in cab.
1. Fully engage and disengage pins three to four times to
remove air from cylinders.
2. Scroll to Diagnostic screen to verify that 600 psi (41 bar)
is present when pins are fully engaged.
Cab Tilt Cylinder
Use cab tilt switch on right side panel in cab.
1. Fully raise and lower cab three to four times to remove
air from cylinders (use switch in operator’s cab).
2. Scroll to cab tilt diagnostic screen to verify that 2,000 psi
(138 bar) is present when cylinders are fully engaged
and that 600 psi (41 bar) is present when disengaged
(stalled).
3. When control is off, cylinders must not retract. If they do,
contact Crane CARE Customer Service.
Carbody Jacking Cylinders
Perform the following procedure when upperworks and
carbody are supported on the jacks.
1. Fully extend and retract jacks three to four times to
remove air from cylinders.
2. Scroll to jacking diagnostic screen to verify that
approximately 3,100 psi (214 bar) is present when
cylinders are fully extended and retracted (stalled).
3. When controls are off, cylinders must not retract. If they
do, contact Crane CARE Customer Service.
4. When retracting jacks, carbody must lower slowly and
smoothly.
Crawler Pin Cylinders
Perform the following procedure before connecting crawlers
to the carbody.
1. Remove collars from ends of pins.
2. Fully engage and disengage pins three to four times to
remove air from cylinders.
3. Scroll to pins diagnostic screen to verify that 3,100 psi
(214 bar) is present when pins are fully engaged and
disengaged (stalled).
Low Pressure Accessory System Checks
The left travel/drum 3 charge pump is the pressure source
for low pressure accessory system. Set pressure to the value
specified in Table 2-10
.
The low pressure accessory system controls the swing
brake, travel brake, travel 2-speed, drum 3/left travel
diverting valve, back hitch pins, and boom hoist (drum 4)
pawl.
Drum Pawls
Place each drum park switch in on – park and off – park
positions.
Observe that each drum pawl engages and disengages
correctly.
CAUTION
Damage to Mast!
When raising the mast for the first time after maintenance
of the mast cylinder, raise the mast slowly and check that
both cylinders are raising the mast evenly. Mast could
twist if one cylinder is not working correctly.

Manitowoc 14000 Specifications

General

Brand	Manitowoc
Model	14000
Category	Construction Equipment
Language	English