14 ► SK58
User Manual
ACCUMULATOR TESTING
PROCEDURE
To check or charge the accumulator the following equipment
is required:
31254 Charge Kit: which includes the following: (Shown in
Figure 2 on the next page.)
•
Accumulator Tester (Part Number 02835).
•
Charging Assembly (P/N 15304) Includes a liquid filled
gauge w/snub valve, hose and charge fitting.
•
NITROGEN bottle with a 800 psi/56 bar minimum
charge. (Not included in 31254 Charge Kit.)
1.
Remove the valve cap assembly from the sinker drill.
2.
Remove the protective cap and loosen the 5/8-inch hex
locking nut on the tool charging valve 1-1/2 turns.
3. Holding the chuck end of Accumulator Tester (P/N
02835) turn the gauge fully counterclockwise to ensure
that the stem inside the chuck is completely retracted.
4. Thread the tester onto the accumulator charging valve.
Do not advance the gauge-end into the chuck-end. Turn
as a unit. Seat the chuck on the accumulator charging
valve and hand tighten only.
5.
Advance the valve stem of the tester by turning the
gauge-end clockwise until a pressure is read on the
gauge (charge pressure should be 600-700 psi/42-48
bar).
6. If pressure is OK unscrew the gauge-end from the
chuck to retract the stem, then unscrew the entire
tester assembly from the accumulator charging valve. If
pressure is low, charge the accumulator as described in
the following procedure.
7.
Tighten the 5/8-inch hex locking nut on the tool charging
valve. Be careful not to overtighten. Install the protective
cap and valve cap assembly.
ACCUMULATOR CHARGING
1.
Perform steps 1 through 4 of the accumulator testing
procedure above.
2.
Connect the chuck of the charging assembly to the
charging valve on the accumulator tester or, if preferred,
remove the tester from the charging valve and connect
the charging assembly chuck directly to the charging
valve.
3. Adjust the regulator to the charging pressure of 600
psi/42 bar.
Note: It may be necessary to set the gauge at 650-700
psi/45-48 bar to overcome any pressure drop through
the charging system.
4. Open the valve on the charging assembly hose.
5. When the accumulator is fully charged close the valve on
the charging assembly hose and remove the charging
assembly chuck from the accumulator tester or tool
charging valve.
6.
If the accumulator tester has been used, be sure to turn
the gauge-end fully counterclockwise before removing
the tester from the charging valve of the tool.
7.
Tighten the 5/8-inch hex locking nut on the tool charging
valve and replace the protective cap.
8.
Replace the valve cap assembly.
MAINTENANCE
Figure 2. Charging the Accumulator
