MTS Series 111 Accumulator - Manual (Page 38)

6.5.0 Remove the Accumulator
Warning:
Accumulators are pressurized devices.
Pressurized accumulators and their parts can become lethal projectiles if disassembled
and can cause death to persons and/or damage to equipment.
Do not remove an accumulator that is pressurized. Completely remove hydraulic pressure and
discharge the accumulator before any parts, except the protective cover and valve stem cap, are
removed.
1. Ensure system hydraulic pressure has been reduced to zero before proceeding. To do this, turn off the
HPS and turn on low pressure at the controller. Exercise the actuator until it stops moving. Then turn off
the electrical power.
2. Place a drain pan under the accumulator to be removed.
3. To prevent contamination of the hydraulic fluid, cover any ports that are exposed.
4. If you have the Model 111.12C Accumulator, use a hex key to remove the flange and accumulator mounting
bolts (see “Actuator Components”). If you have the Model 111.11B Accumulator, use an open-end and
strap wrench to loosen the accumulator from the boss adapter fitting.
5. Perform any required maintenance (see the other procedures in this section).
6. To reinstall the accumulator, see “Series 111 Accumulator Installation Procedure”.
38 Series 111 Accumulator Product Information
6.0 Maintenance