Manitowoc MLC300 Service And Maintenance Manual

Reference Only
Manitowoc Published 11-22-17, Control # 257-02 2-35
MLC300 SERVICE/MAINTENANCE MANUAL HYDRAULIC SYSTEM
2
This crane is equipped with accumulators, which are
identified in Figure 2-27
.
The accumulators must be tested yearly to verify they have
retained the specified pre-charge.
The test must be performed by a qualified technician who is
trained in the operation and maintenance of gas-filled
accumulators. Observe the following:
• Pre-charge 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 (8, Figure 2-27
) 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 2-28
)
Accumulators (9 and 10, Figure 2-27
) are equipped with a
Schrader valve (tire inflation valve) located under the
protective cap (3, Figure 2-29
) on the top of the accumulator.
An accurate tire pressure gauge can be attached to the
Schrader valve to check pressure.
WARNING
Explosion Hazard!
The accumulators are pre-charged with dry nitrogen gas.
Do not tamper with the accumulators unless authorized
and trained to do so.
Contact the Manitowoc Crane Care Lattice Team for
assistance if needed.
FIGURE 2-28
Item Description
1Protective Cap
2 M28 x 1,5 Male Thread
FIGURE 2-29
Item Description
1 Pressure Gauge
2 Schrader Valve
3Protective Cap

Manitowoc MLC300 Specifications

General

Brand	Manitowoc
Model	MLC300
Category	Construction Equipment
Language	English