Allied AR110C, Safety, Operation And Maintenance, Page: 31 / 60

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7.0 Care and Maintenance – [cont’d]
7.6 Mounting Pin Inspection
Inspect the mounting pins for wear and damage
when the breaker is removed from the carrier.
Replace pins if damaged or worn.
7.7 Threaded Fasteners
IMPORTANT
Keep threaded fasteners tight. Replace damaged
or missing fasteners prior to operating equipment.
Replacement must be the same type and grade.
Threaded fasteners are subjected to high stresses.
All threaded fasteners must be checked daily for the
first 50 operating hours and once a week thereafter.
Tighten fasteners to the specified torque.
7.8 Hose Inspection
Replace hoses if any of the following conditions are
present:

End fittings are damaged or leaking

Outer coverings are chafed or cut.

Wires are exposed

Outer coverings are ballooning

Flexible part of the hoses are kinked

Outer covers have embedded armoring

End fittings are displaced
7.9 Check Carrier’s Oil Level and Quality
Check oil level in reservoir. Check records for last oil
and filter service. Test oil quality. Review the
manufacturer's maintenance schedule. It may specify
operating conditions that require special attention to
maintenance and adjusted service intervals.
CAUTION
Follow the service intervals
recommended by the carrier
manufacturer.
7.10 Measure Oil Pressure Whenever the
Following Conditions Occur
All hydraulic breakers are designed to provide
optimum performance with reliable service life at a
specific oil pressure. The correct pressure must be
maintained for proper functioning, optimal efficiency
and reliable service.
It is Required to Measure Oil Pressure When –

The breaker is first installed on a carrier

The machine’s hydraulic circuit is repaired or
modified.

The machine operates other hydraulic work tools.

The breaker is removed from one machine and
attached to a different machine.

It’s recommended to check the pressure after
every 250 hours of operation.
Fig. 7-10 Measuring Oil Pressure
7.10.1 Safety Precautions When Measuring Oil
Pressure

Certain tests, such as measuring the oil pressure,
can only be done while the breaker is operating.
CAUTION
Only qualified personnel shall operate the breaker.
Never activate the breaker unless the operator is
seated in the operator’s seat and is in full control of
the machine.
WARNING
Fluid penetration injury. Fluid leaks under
pressure can penetrate skin. If any fluid
appears to penetrate the skin, seek
immediate medical attention.
Always relieve pressure before disconnecting
hydraulic lines or other pressurized lines. Only
qualified technicians with special tools and
knowledge of the hydraulic system should perform
testing.