Manitowoc Published 05-09-17, Control # 014-28 2-7
16000 SERVICE/MAINTENANCE MANUAL HYDRAULIC SYSTEM
8. Have hydraulic oil analyzed at regular intervals to
determine condition of oil and extent of system
contamination.
By having the oil analyzed on a regular basis, an oil
change interval meeting your operating conditions can
be established.
NOTE: Contact your oil supplier for the availability of oil
analysis services and the steps that should be
taken to obtain these services.
Replacing Desiccant Breather
The following instructions apply only to current production
cranes.
See Figure 2-5
for the following procedure.
1. Unscrew breather from tank.
2. Unscrew cap from cartridge and discard cartridge.
3. Remove protective caps from top and bottom of new
cartridge.
4. Securely attach cap to cartridge — HAND TIGHTEN
only.
5. Securely attach breather to hydraulic tank — HAND
TIGHTEN only.
Replacing Filters
Reference Figure 2-1:
• Filter 1 (two installed on past production only): 12-micron
absolute which filter oil to all charge pumps.
• Filter 2 (2 or 3 elements each return to tank): 12-micron
absolute which filter all oil returning to tank.
If a filter is too dirty, a fault alarm will come on and a fault
symbol will appear on the active display. HYDRULIC FILTER
icon and corresponding filter number will appear on fault
display (Figure 2-6
).
It is normal for the alert to come on at start-up when the oil is
cold. If the filters are not plugged, the alert will turn off after
the hydraulic oil warms up.
Filter 1 (Charge, past production)
See Figure 2-1 and Figure 2-7 for the following procedure.
Replace charge filter elements when FILTER 1 fault comes
on and at each oil change interval.
1. Stop engine.
2. Clean outside of filter body in area around cover.
3. Past production style 1 filter assemblies:
a. Remove fill cap. Use care not to damage O-rings.
Fill cap has a hexagon stud for easy removal.
b. Twist element handle counter-clockwise and pull
filter element out of body and discard element.
Do not attempt to clean or reuse element.
Do not operate crane without charge filter elements
installed.
4. Past production style 2 filter assemblies:
a. Remove cover. Use care not to damage O-rings.
FIGURE 2-4
HYDRAULIC RESERVOIR
TEMPERATURE Fault Icon
Current Production Desiccant Breather
Desiccant
Beads
Service
Indicator
FIGURE 2-5
Reusable
Cap
Disposable
Cartridge
P2348b
CAUTION
Avoid Hydraulic System Damage!
Original Equipment Manufacturers’ filter elements –
available from the Manitowoc Crane Care Lattice Team –
must be used on this crane. Substituting with any other
brand or type filter element is not allowed.
Filter elements made by other manufacturers may
collapse under pressure. This action will allow unfiltered
oil to be drawn into hydraulic system — pumps, motors,
and valves can be destroyed.
The Manitowoc Crane Care Lattice Team will reject
warranty claims for damaged hydraulic components if
proper hydraulic filter elements are not used.
FIGURE 2-6
HYDRAULIC FILTER
Fault Icon
Filter
Number
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