Manitowoc 14000 Service And Maintenance Manual

Reference Only
Manitowoc Published 09-10-14, Control # 065-24 2-13
14000 SERVICE MANUAL HYDRAULIC SYSTEM
2
SHOP PROCEDURES
Initial Oil Fill
The following procedure is used at the factory to fill the
hydraulic system on a new crane. It is necessary to use this
procedure in the field only if the entire hydraulic system has
been drained.
1. If equipped with free fall drums, fill front and rear drum
pump cases with oil as follows:
a. Disconnect hydraulic hose and remove fitting from
case drain port in top of both pumps.
b. Fill both pump cases to level of case drain port. Use
new hydraulic oil filtered through a 10-micron
filter.
c. Reinstall fittings and reconnect hydraulic lines.
2. Fill all motor cases with oil (Figure 2-13
).
a. Disconnect fittings at case drain ports.
b. Fill each motor case to level of case drain port. Use
new hydraulic oil filtered through a 10-micron
filter.
c. Reconnect fittings.
3. Open hydraulic tank shut off valve (7a, Figure 2-1
).
4. Open return line cap (8) in return line (Figure 2-1
).
5. Make sure drain valve (7, Figure 2-1
) is closed.
6. At the engine, disengage engine clutch (Figure 2-14).
7. Fill through stand pipe in return line (2a) or through
power fill coupling (2b, Figure 2-1
). Use new hydraulic
oil filtered through a 10-micron filter.
8. Open air valve (4) on top of tank to release pressure
when filling through power fill coupling.
9. Fill to Cold Full level (9) on hydraulic tank gauge.
10. Fill pump cases at return line cap (8) in return line
(Figure 2-1
) until manifold will not take any more oil. Use
new hydraulic oil filtered through a 10-micron filter.
11. Install and securely tighten return line cap (8, Figure 2-1
)
as soon as clear oil appears.
12. Check for hydraulic leaks and correct if found.
Initial Start-Up
The following procedure is used at the factory to start a new
crane engine for the first time. It is necessary to use this
procedure in the field only if the entire hydraulic system has
been drained.
The procedure requires two people: one to start the engine
and monitor pressures on the diagnostic screens and one to
monitor gauge pressure and check for leaks.
1. BEFORE starting the engine, calibrate pressure senders
as described in this section.
2. Make sure hydraulic tank shutoff valve (6a, Figure 2-1
)
is fully open. Pumps can be damaged from cavitation
if this step is not performed.
3. Disconnect electrical (DIN) connectors (5) from
solenoids.
4. At engine, disengage engine clutch (Figure 2-14
).
5. Start the engine at lowest possible speed and make
necessary adjustments before engaging clutch.
6. Slowly engage and disengage clutch and check for
charge pressure.
FIGURE 2-14
Left Side Enclosure
Lift Handle Up
and Push
In to Engaged
Disengaged
Position
Engine Clutch Lever
P2374
WARNING
Burn Hazard!
Oil in hydraulic tank may be under pressure and
extremely hot.
Hot oil can escape when you remove filter fill cap.
Relieve pressure through air valve (4, Figure 2-1
) in top
of tank before servicing.
CAUTION
Avoid Damage to Hydraulic System!
If hydraulic fluid low alarm comes on at any time during
start-up procedure, add oil to tank.

Manitowoc 14000 Specifications

General

Brand	Manitowoc
Model	14000
Category	Construction Equipment
Language	English