
Reference
Only
18000 SERIVCE/MAINTENANCE MANUAL
HYDRAULIC SYSTEM
Manitowoc
Published 12-05-17, Control # 035-23
2-1
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 18000.
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 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 fitting
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.
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 your Manitowoc dealer.
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 hydraulic hose is de-pressurized before
loosening any connections.
Zone
Classification
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
Содержание 18000
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Страница 4: ...R e f e r e n c e O n l y THE ORIGINAL LANGUAGE OF THIS PUBLICATION IS ENGLISH ...
Страница 210: ...R e f e r e n c e O n l y NOTES SKETCHES AND PHOTOGRAPHS ...
Страница 315: ...R e f e r e n c e O n l y ...
Страница 316: ...R e f e r e n c e O n l y ...