Manitowoc 14000 Service Maintenance Manual

Reference Only
HYDRAULIC SYSTEM 14000 SERVICE MANUAL
2-14
Published 09-05-14, Control # 226-02
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 6a, 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 engine, disengage engine clutch (Figure 2-14
).
7. Fill through stand pipe in return line (2a, Figure 2-1
) or
through power fill coupling (2b). 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 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) 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 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 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 the stand pipe plug,
filter cover, or breather.
Relieve pressure through air valve on 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.
CAUTION
Equipment Damage
Check pump pressures during first two minutes of
operation. If pressure for any pump is not within specified
range, shut down engine immediately to prevent pump
damage. Troubleshoot to determine cause of problem.

Manitowoc 14000 Specifications

General

Brand	Manitowoc
Model	14000
Category	Construction Equipment
Language	English