Manitowoc 14000 Service And Maintenance Manual

Reference Only
HYDRAULIC SYSTEM 14000 SERVICE MANUAL
2-26
Published 09-10-14, Control # 065-24
Charge Pressure Adjustment
The following adjustment is only required when a system
fails the Charge Pressure Test described in this section.
1. Scroll to diagnostic screen for corresponding function
(see Figure 2-15
).
2. Start and run the engine at high idle. With function in
neutral, system pressure on diagnostic screen should
read 320 to 370 psi (22 to 25,5 bar).
3. If specified pressure is not indicated, stop the engine
and connect an accurate 0 to 1,000 psi (0 to 69 bar)
hydraulic pressure gauge to coupler at corresponding
pressure sender.
4. Repeat step 2 because specified pressure is still not
indicated:
• Do a Pressure Sender Test as instructed in this
section. Replace faulty pressure sender if needed.
• Do a Control Calibration as instructed in this
section.
If specified pressure is still not indicated:
• If pressure is too high, check that pump neutral is
adjusted properly. If pressure is still high, adjust
charge pressure relief valve.
• If pressure is too high, adjust charge pressure relief
valve. If you cannot raise charge pressure,
excessive system leakage is indicated.
5. To adjust charge pressure:
See Figure 2-26
for the following procedure.
a. Loosen lock nut (1).
b. Adjust adjusting plug (2).
- Turn in to increase pressure.
- Turn out to decrease pressure.
c. Once specified pressure is indicated, hold adjusting
plug (2) in position and securely tighten lock nut (1).
6. Stop the engine and remove gauge from transducer
gauge port.
Pump Neutral Adjustment
See Figure 2-27 for the following procedure.
To adjust pump neutral:
1. Park all crane functions and stop the engine.
2. Disconnect electrical (DIN) connector from pump EDC
(see Figure 2-29
).
3. Install an accurate 0 to 1,000 psi (0 to 69 bar) hydraulic
pressure gauge in each servo gauge port (1).
4. Start and run the engine at high idle.
Item Description Hex Wrench Size
1 Lock Nut 1/2 in (12,7 mm)
2
Adjusting Plug
Series 030-100
1-1/16 in (27,0 mm)
Adjusting Plug
Series 030-100
1-5/8 in (41,28 mm)
1
P1600a
FIGURE 2-26
2
Typical Pump Installation

Manitowoc 14000 Specifications

General

Brand	Manitowoc
Model	14000
Category	Construction Equipment
Language	English