Manitowoc MLC300 Service And Maintenance Manual

Reference Only
Manitowoc Published 11-22-17, Control # 257-02 2-17
MLC300 SERVICE/MAINTENANCE MANUAL HYDRAULIC SYSTEM
2
HYDRAULIC SYSTEM MAINTENANCE
Only experienced technicians trained in the operation of this
crane and its hydraulic system shall perform the procedures
described in this section. The technicians shall read,
understand, and comply with the instructions in this section
and the instructions in the Manitowoc MLC300 Main Display
Operation Manual.
Contact your Manitowoc Cranes dealer for an explanation of
any procedure not fully understood.
Safety
Lower or securely block hydraulically operated attachments
and loads before servicing. Do not rely on controls to support
attachments or loads.
Stop the engine and relieve all hydraulic pressure before
servicing or disconnecting any part of the hydraulic system.
After stopping the engine, operate the controls in both
directions to relieve pressure.
Before servicing the hydraulic system, attach a warning sign
to the engine start controls to warn other personnel not to
start the engine.
Do not perform hydraulic system maintenance, adjustment,
or repair procedures unless authorized to do so. And then,
make sure all applicable instructions have been read and are
thoroughly understood.
Do not alter specified pressure settings. Higher-than-
specified pressures can cause structural or hydraulic failure.
Lower-than-specified pressures can cause loss of control.
Never check for hydraulic leaks with your hands.
Pressurized oil can penetrate the skin, causing serious
injury. Oil escaping from a small hole can be nearly invisible.
Check for leaks with a piece of cardboard or wood.
Storing and Handling Oil
• Store oil drums in a clean, cool, dry location. Avoid
outdoor storage.
• Store oil drums on their side and cover them to prevent
water and dirt from collecting on them.
• When handling drums and transfer containers, use care
to avoid damage that can cause leaks and entry of dirt or
water into the oil.
• Before opening a drum, carefully clean the top of it.
Clean the faucet or pump to remove oil from the drum,
also.
• Only use clean transfer containers.
• Do not take oil from storage until the oil is needed. If the
oil cannot be used immediately, keep the transfer
container tightly covered.
Storing and Handling Parts
• Store new parts (valves, pumps, motors, hoses, tubes)
in a clean, dry, indoor location.
• Do not unpack parts or remove port plugs until the parts
are needed.
• Once unpacked, carefully inspect each part for damage
that may have occurred during shipping. Remove all
shipping material from the ports of parts before installing
them.
• Fittings, hoses, and tubes that are not equipped with
shipping caps or plugs must be carefully cleaned before
they are used. Flush the fittings, hoses, and tubes with
clean hydraulic oil and seal all openings until use at
assembly.
• Do not use rags to plug openings. Use clean plastic
shipping plugs and caps.
Disposing of Hydraulic Oil and Parts
Dispose of waste oil and used or non-serviceable parts
according to local, state, and federal environmental
regulations.
CAUTION
Hydraulic Component Damage!
Do not alter the hydraulic system pressures or flows
without approval from the Manitowoc Crane Care Lattice
Team.
Damage to hydraulic components and improper operation
of the crane can occur if pressures and flows are altered.

Manitowoc MLC300 Specifications

General

Brand	Manitowoc
Model	MLC300
Category	Construction Equipment
Language	English