Manitowoc 16000 Service And Maintenance Manual

Reference Only
Manitowoc Published 05-09-17, Control # 014-28 2-29
16000 SERVICE/MAINTENANCE MANUAL HYDRAULIC SYSTEM
2
Charge Pressure Test
See Figure 2-27 for the following procedure.
The charge pressure test checks the ability of all primary
cane functions to build proper charge pressure. This test
generally is used only as a shop procedure on new cranes. It
can also be used as a quick way to test hydraulic
components in the primary hydraulic circuits. Charge pump
pressure must be within 275 to 400 psi (19 to 27 bar).
Test charge pressure as follows:
1. Apply all park brakes with switches on control console.
2. Start and run engine at low idle.
3. Press Enter button to go to Pressure Test and
Calibration screen from Menu screen.
4. Press Enter button to go to level 2. Use
Select buttons to show LOW PRESSURE
icon in data box.
5. Press Confirm button to start test.
6. Test starts and percent of completion is displayed in data
box.
7. When test is complete, charge pressure icon reappears
in data box.
Charge pressure levels must be within a specified range
during this test. Any pump that failed to maintain charge
pressure within a specified range is highlighted yellow.
Troubleshoot failed circuit to determine cause of fault.
High Pressure Adjustment
The following adjustment is only required when a system
fails the High Pressure Test described in this section.
Unless otherwise specified, see Figure 2-28
for the following
procedure.
1. Scroll to diagnostic screen for corresponding function
(see Figure 2-29
).
2. Disconnect electric connector from corresponding brake
solenoid valve (see Figure 2-16
).
3. With engine running at low idle, slowly move desired
control handle:
• In either direction from off for swing or travel
• Back from off (hoist direction) for all drums
4. Do not demand any more than 20% handle command.
5. Pressure on screen should indicate pressure specified
in Table 2-10
.
6. If proper pressure is not indicated, adjust corresponding
multi-function valve:
a. Remove protective cap (3) from multi-function valve
(1 or 2). See Table 2-10
and Figure 2-22 for pump
port identification.
b. Loosen lock nut (4).
DO NOT tamper with bypass hex (6). See pump
manufacturer’s instructions.
c. Using an internal hex wrench, adjust multi-function
valve adjusting screw (5).
- Turn IN to INCREASE pressure
- Turn OUT to DECREASE pressure
7. Repeat step 6 until specified pressure is indicated.
8. Hold adjusting screw (5) in position and securely tighten
lock nut (4).
9. Install protective cap (3).
10. Reconnect electric connector to corresponding brake
solenoid valve (see Figure 2-16
).
FIGURE 2-27
D16-29B
Data Box

Manitowoc 16000 Specifications

General

Brand	Manitowoc
Model	16000
Category	Construction Equipment
Language	English