Allied AR110C, Safety, Operation And Maintenance, Page: 43 / 60

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12.0 Accumulator N
2
Gas Charge Tool
12.1 Accumulator N2 Gas Charge Equipment
The accumulator is a self-contained pressure vessel
with an elastic membrane that divides the inner
housing into a pair of expansible chambers. The
lower chamber is used to receive, store and
discharge pressurized oil. The upper chamber is filled
with nitrogen gas.
After membrane replacement, the accumulator must
be pre-charged with nitrogen (N2) gas. Accurate
charging to the specified pressure is important for
proper and long-term performance. This is
accomplished with the charging tool (Fig. 12-1) and a
commercially available nitrogen bottle.
WARNING
Prevent injury from unexpected
release of high pressure gaseous
energy. Gas under pressure remains
in the accumulator even at times
when there is no hydraulic pressure to
the breaker.
Only qualified technicians with special
tools and training should service the
accumulator. Never attempt to
dismantle the accumulator until it is
safely discharged of all pressure. If
the breaker is attached to a carrier do
not service the accumulator until oil
pressure inside breaker and hydraulic
circuit is relieved.
Fig. 12-1 N
2
Gas Charge Tool
Table 12.1 N2 Gas Charge Kit
Item Description Part No. Qty Remarks / Specifications
--- N2 Gas Charge Kit 570071 1-Kit Kit includes 1,2,3,4,5,6
1 Charge Valve and Gauge 100527 1 Includes 2-6 and storage case
2 Socket Bolt 40601 1
3 Adaptor R101635 1
4 O-ring 901135 1
5 Hose N/A 1 8 Ft. [2.5 M] Not Sold Separately
6 Gas Bottle Adapter N/A 1 Not Sold Separately
--- Nitrogen Gas Bottle N/A 1 Not Supplied (SOURCE LOCALLY)
A,B,C U-sit ring, Charge Bolt, Cap --- ---
A,B,C shown for reference only. These
items are not included in charge kit