Setup Instructions

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Special Charging Tool, Part No. TOR4001, is available from O.T.C., 2013 4th St. Owatonna, MN 55060
1-800-533-0492 (in Minnesota and Canada 1-507-455-7050) Fax. [phone]
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Figure 2
1. Accumulator
2. Valve
3. O-ring
4. Install the new o-ring seal (included) into the groove in
the top of the main valve body and carefully lower the
new accumulator onto the seal. The accumulator has 2
sets of decals on it and a rectangular mounting hole
pattern. Make sure that the decals are facing forward and
rearward when mounting the accumulator to the valve
and that the decals are securely attached and legible.
5. Mount the accumulator to the valve with 4 new bolts
(included). Torque the bolts evenly to 40 ft.-lb.
(55 N⋅m).
Charging the Accumulator
1. Remove the protective gas valve guard and yellow
valve cap from the top of the new accumulator (Fig. 3).
Figure 3
1. Gas valve guard 2. Valve cap
2. Attach a charged tank of dry (oil pumped) nitrogen to
the high pressure tank connector on the Charging Tool
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(Fig. 4). Tighten the hose to the supply tank by turning
the hose fitting counterclockwise.
Figure 4
1. Accumulator connector
2. Pressure gauge
3. Outlet valve with diffuser
4. Check valve
5. Relief valve
6. High pressure tank
connector
3. Tighten the outlet valve on the charging tool (Fig. 4) to
prevent loss of pressurized nitrogen.
4. Attach and lightly tighten the accumulator connector
(Fig. 4) of the charging tool to the gas valve inlet on top
of the accumulator.
5. Hold the gas valve stationary while rotating the gas
valve jam nut 3 turns counterclockwise, as viewed from
the top. This opens the gas valve to the charging tool.
6. While watching the pressure gauge on the charging tool,
slowly open the supply tank valve. The pressure on the
gauge will start to rise. Close the supply tank valve
when the gauge pressure reaches 2500 psi. Wait a few
minutes to ensure that the system pressure has
equalized. Add additional gas if required.
7. Close the accumulator gas valve by turning the jam nut
clockwise. Torque the jam nut to 10–12 ft.-lb.
(14–16 N⋅m).
8. Slowly open the outlet valve on the charging tool,
de-pressurizing the tool. Remove the tool from the
accumulator and tank. Install the protective cover on the
gas supply tank.
9. Install the yellow protective cap (Fig. 3) and torque it to
10–15 in.-lb. (1–2 N⋅m). Install the valve protector
guard (Fig. 3).
Note: Upon completion, install a tag on the accumulator
identifying the charging pressure and charging date.