Manitowoc MLC100-1 Service And Maintenance Manual

HYDRAULIC SYSTEM MLC80A-1/MLC90A-1/MLC100A-1/MLC100-1 SERVICE/MAINTENANCE MANUAL
2-26
Published 10-09-2020, Control # 259-06
ACCUMULATOR MAINTENANCE
This crane is equipped with one accumulator, which is
located on the low-pressure accessory valve and identified in
Figure 2-19
.
The accumulator must be tested yearly to verify they have
retained the specified precharge.
The test must be performed by a qualified technician who is
trained in the operation and maintenance of gas-filled
accumulators. Observe the following:
• Precharge accumulators with dry nitrogen gas only.
• Never operate accumulators without the specified pre-
charge.
• Release all system pressure (hydraulic and gas) before
disassembling.
• Use only approved charging and gauging equipment.
• Do not operate accumulators above the specified
maximum pressure.
• Stop the engine when reading the gauge to check the
pressure.
The accumulator is not equipped with a gauge port. The
technician shall install test equipment in the fitting under the
protective cap in the top of the accumulator. The fitting size is
M28 x 1.5 male thread (2, Figure 2-20
).
WARNING
Explosion Hazard!
The accumulator is precharged with dry nitrogen gas.
Do not tamper with the accumulator unless authorized
and trained to do so.
Contact the Manitowoc Crane Care Lattice Team for
assistance if needed.
FIGURE 2-19
Item Description Pre-Charge
1 Accumulator Diaphragm Type 21.7 bar (315 psi)
FIGURE 2-20
Item Description
1Protective Cap
2 M28 x 1.5 Male Thread
FOR REFERENCE
ONLY

Manitowoc MLC100-1 Specifications

General

Brand	Manitowoc
Model	MLC100-1
Category	Construction Equipment
Language	English