Manitowoc 18000, Service Maintenance Manual, Page: 103 / 316

Reference
Only
18000 SERIVCE/MAINTENANCE MANUAL HYDRAULIC SYSTEM
Manitowoc
Published 12-05-17, Control # 035-23
2-9
2
REPLACING DESICCANT BREATHER
The following instructions apply only to current production
cranes.
See Figure 2-5 for the following procedure.
Replace cartridge (3) with a new one when desiccant beads
(5) turn dark green. They are gold when new.
1. Unscrew breather assembly (1) from tank.
2. Unscrew cap (2) from cartridge (3) and discard
cartridge.
3. Remove protective caps from top and bottom of new
cartridge.
4. Securely attach cap (2) to cartridge (3) — hand tighten
only .
5. Securely attach breather assembly (1) to hydraulic tank
—
hand tighten only .
CHANGING OIL
Unless otherwise specified, see Figure 2-2 for the following
procedure.
Drain and refill hydraulic system according to the
recommended intervals of lubrication folio 2104, unless an
alternate interval has been established through an oil
analysis program.
1. Operate crane until hydraulic oil is at normal operating
temperature. This will help prevent impurities from
settling in system.
2. Stop engine.
3. Attach a rubber hose to pipe on drain valve (14) and
insert end of hose into a suitable container to catch
hydraulic oil. Tank capacity to FULL COLD mark on sight
gauge is 270 gallons (1 022 liters).
4. Open drain valve (14) and drain tank completely.
5. Clean all dirt off access covers (6) in top and bottom of
tank. Then remove covers.
Take care to prevent dust
and wind-blown dirt from entering tank while covers
are off.
6. Flush out any sediment inside tank.
7. Carefully inspect each suction filter (16, Figure 2-6 ) for
damaged or clogged holes and for sludge, gum or
lacquer formation. If necessary, clean as follows:
a. Remove suction filter from inside tank. Use a
wrench carefully if necessary.
b. Soak in clean, nonflammable solvent. Brush off
outer surface, and flush from inside out. Discard if
damaged.
c. Securely reinstall suction filter.
8. Use new seals and securely fasten access covers to
tank.
WARNING
Burn Hazard!
Oil in hydraulic tank may be under pressure and
extremely hot.
Hot oil can escape when you remove breather.
RELIEVE PRESSURE through air valve (13b,
Figure 2-2 )
in side of tank before servicing desiccant breather.
P2348b
FIGURE 2-5
Item Description
1 Breather Assembly
2 Cap (reusable)
3 Cartridge (disposable)
4 Service Indicator
5 Desiccant Beads
3 4
P2348
2
1
5
16
FIGURE 2-6
Item Description
6 Access Cover (bottom)
10 Hydraulic Tank
16 Suction Filter 2 (2 each)
18CSM2-104
6
10