Manitowoc Published 09-10-14, Control # 065-24 2-5
14000 SERVICE MANUAL HYDRAULIC SYSTEM
Replacing Filter
This crane has one hydraulic return filter (1, Figure 2-1) 12-
micron absolute which filters all oil returning to tank.
If a filter is dirty, a fault alarm comes on and a fault symbol
appears on active display. Hydraulic Filter icon and
corresponding filter number appear on fault display
(Figure 2-5
).
It is normal for the alert to come on at start-up when the oil is
cold. If the filter is not plugged, alert will turn off after
hydraulic oil warms up.
Return Filter
See Figure 2-1 and Figure 2-6 for the following procedure.
Replace return filter element when FILTER 1 fault comes on
and at each oil change interval.
1. Stop the engine.
2. Clean outside of filter head in area around fill cap.
3. Remove fill cap. Use care not to damage O-rings.
Fill cap has a hexagon stud for easy removal.
4. Lift cap and filter out of body and discard element.
Do not attempt to clean or reuse element.
Do not operate the crane without filter element
installed.
5. Twist and pull filter element to disconnect the element.
6. Lubricate O-ring at both ends of new element with clean
hydraulic oil and install element over stem in housing.
7. If necessary, replace O-ring in fill cap.
8. Reinstall fill cap and securely tighten.
9. Start the engine and allow hydraulic system to return to
normal operating pressure and temperature. Check filter
fill cap and return line cap for leaks. Tighten as required.
10. Stop the engine, check hydraulic tank level, and refill as
required.
CAUTION
Avoid Hydraulic System Damage!
Original Equipment Manufacturers’ filter elements –
available from Manitowoc – 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.
Manitowoc will reject warranty claims for damaged
hydraulic components if proper hydraulic filter elements
are not used.
WARNING
Burn Hazard!
Oil in hydraulic tank may be under pressure and
extremely hot.
Hot oil can escape when you remove stand pipe plug,
filter cover, or breather.
Relieve pressure through air valve (item 4, Figure 2-1
) on
tank before servicing.
FIGURE 2-5
HYDRAULIC FILTER
Fault Icon
Filter
Number
14CSM2-7
Cover
Body
Head
Outlet to Tank
Return Filter
O-Ring
FIGURE 2-6
Element
O-Rings
O-Ring
Inlet
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