Allied AR110C, Safety, Operation And Maintenance, Page: 44 / 60

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SOM576701_14jan
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12.0 Accumulator N
2
Gas Charge Tool – [cont’d]
12.2 Tools Required
1. Charge Kit 570071 (Fig. 12-1)
Source additional equipment locally:

Nitrogen Bottle (with pressure regulator is
recommended)

Screwdriver

Combination wrench

Hex wrench (6mm)

Torque Wrench

Clean oil

Rags
WARNING
Risk of explosion if filled with
substitute gas or air. Use only dry
nitrogen gas to fill accumulator.
WARNING
If breaker is attached to carrier,
relieve all hydraulic pressure inside
breaker and attachment circuit
before accumulator is serviced.
CAUTION
Crush hazard. If attached to a
carrier, lower the breaker to a flat
stable surface. Ensure all loads are
supported and stable.
12.3 Connect the Charge Valve (Fig. 12-1)
1. Clean immediate area around the charge port.
With a screwdriver, remove protective plug (C).
2. Use hex wrench to loosen charge bolt (B). (Do
not allow gas to escape. Do not exceed 1/6 turn)
3. Check condition of O-ring (4) and thread the
charging adaptor (3) into charge port
4. Insert socket bolt (2) thru adapter and engage
with charge bolt.
5. Thread charge valve (1) onto adapter.
6. Attach one end of hose to the charge valve and
the other to the valve at nitrogen bottle.
12.4 How to Test / Measure Gas Charge
WARNING
For the purpose of these instructions, the
nitrogen bottle is equipped with a pressure
regulator.
1. To preserve U-sit ring (A), the pressure must be
equalized on both sides. To do this, adjust
regulator to zero. Slowly crack open valve on
nitrogen bottle to avoid pressure shock. Adjust
regulator to pressure specified in technical data
section. Close valve on bottle when desired
pressure is shown on gage. If over pressure,
adjust using bleed valve.
2. Observe gage on charge valve while unseating
the charge bolt. Turn T-handle 2 – 3 revolutions
CCW. If the pressure in hose is equal to pressure
inside accumulator, the gage will remain
stationary.
3. If a change in pressure is observed, but is +/- 5%
of specification, no adjustment is necessary. If
so, remove charging valve from accumulator as
described in Section 12.6 of this manual.
4. Pressures > +/- 5% of specification requires
adjustment. If so, follow the instructions for
charging the accumulator as described in Section
12.5 of this manual.
5. If the gage plummets to 0 psi, this may indicate a
ruptured membrane. Try adding gas. If gas is
bypassing membrane, pressure will fail to rise. If
so, repair is necessary.
12.5 Charging the Accumulator
CAUTION
Rapid cooling of the gas temperature is normal
when gas is transferred from the bottle. It is
important not to fill the accumulator too quickly or
the rubber membrane may be damaged.
1. Follow the instructions described in Section 12.3
for connecting the charge tool.
2. Unseat the charge bolt by turning the T-handle 3
revolutions CCW.