Manitowoc 14000 Service And Maintenance Manual

Reference Only
Manitowoc Published 09-10-14, Control # 065-24 2-1
14000 SERVICE MANUAL HYDRAULIC SYSTEM
2
SECTION 2
HYDRAULIC SYSTEM
HYDRAULIC SCHEMATICS
Hydraulic schematics are attached at the end of this section.
HYDRAULIC SYSTEM – GENERAL
This section contains hydraulic system maintenance,
adjustment, calibration, and test procedures for the hydraulic
system and related components on the Model 14000.
Experienced technicians, trained in the operation of this
crane and its hydraulic system, shall perform the procedures
described in this section. The technicians shall read,
understand, and comply with the instructions in this section
and to the display screen instructions in Section 3 of the
Crane Operator Manual.
Contact your Manitowoc dealer for an explanation of any
procedure not fully understood.
The adjustment, calibration, and test procedures described
in this section were made to the crane before it was shipped
from the factory. These procedures must be performed by
field personnel only when parts are replaced or when
instructed by a Manitowoc dealer.
CHECKING AND REPLACING HYDRAULIC
HOSES
1. Visually inspect all hydraulic hose assemblies every
month or at 200 hours of service life for the following:
a. Leaks at hose fittings or in hose
b. Damaged, cut or abraded cover
c. Exposed reinforcement
d. Kinked, crushed, flattened or twisted hose.
e. Hard, stiff, heat cracked or charred hose
f. Blistered, soft, degraded, or loose cover
g. Cracked, damaged or badly corroded fittings
h. Fitting slippage on hose
i. Other signs of significant deterioration
If any of these conditions exist, evaluate the hose
assemblies for correction or replacement.
2. At the same service interval, visually inspect all other
hydraulic components and valves for the following:
a. Leaking ports
b. Leaking valve sections or manifolds and valves
installed into cylinders or onto motors
c. Damaged or missing hose clamps, guards, or
shields
d. Excessive dirt and debris around hose assemblies
If any of these conditions exist, address them
appropriately.
See Table 2-1
below for the following items.
3. It is recommended that hydraulic hose assemblies
operating in Zone C be replaced after 8,000 hours of
service life.
4. Hydraulic hose assemblies operating in Zone A and B
with high ambient temperatures and high duty circuits
could see hose service life reduced by 40% to 50%.
High duty circuits can include, but are not limited to:
hoist(s), boom lift, swing, travel, pump suction and
discharge to directional valves and directional valve
return to reservoir. It is recommended to replace these
hoses after 4,000 to 5,000 hours of service life.
Table 2-1 Climate Zone Classification:
CAUTION
Do not alter hydraulic system specifications given in this
section without approval of Crane CARE Customer
Service.
Damage to hydraulic components and improper operation
of crane can occur if specifications are altered.
CAUTION
Burn Hazard!
Oil in hydraulic tank may be under pressure and
extremely hot.
Ensure that the hydraulic hose is depressurized before
loosening any connections.
Item Description
A Tropical Moist: All months average above 65° F (18° C).
Latitude: 15° - 25° N & S
B Dry or Arid: Deficient precipitation most of the year.
Latitude: 20° - 35° N & S
C Moist Mid-Latitude: Temperate with mild winters.
Latitude: 30° - 50° N & S
D Moist Mid-Latitude: Cold winters.
Latitude 50° - 70° N & S
E Polar: Extremely cold winters and summers.
Latitude: 60° - 75° N & S

Manitowoc 14000 Specifications

General

Brand	Manitowoc
Model	14000
Category	Construction Equipment
Language	English