MTS Series 505 SilentFlo Hydraulic Power Unit Model 505-11 - Manual (Page 70)

Model 505.07/.11 SilentFlo™ HPU 70
Surge Suppressor Kit
Accessories
Required equipment
You will need the following to install the Surge Supressor kit:
• A Model 505.07 Surge Suppressor kit (part number 100-008-667) or a
Model 505.11 Surge Suppressor kit (part number 100-008-665).
• Optional Remote Charging kit (part number 100-056-912)
• A transfer pump with a 10-micron filter (such as the Model 590.01 Fluid
Transfer Pump).
• A cleaning solvent such as Synasol.
• A charging kit (part number 037-698-601).
Installation procedure
To install the Surge Suppressor Kit.
1. Ensure that system hydraulic pressure has been reduced to zero before
proceeding. To do this, turn off the hydraulic power unit and exercise the
actuator until it stops moving.
2. Remove the electrical power to the HPU via a circuit breaker at the power
source.
3. Open the top cover of the HPU. Use a 8-mm (5/16-inch) allen wrench to
unlatch the cover.
4. Remove the filler cap and reservoir cover.
5. Remove the hydraulic fluid.
Use the transfer pump to remove the old hydraulic fluid out of the reservoir
and into an appropriate container. Open the fluid drain to remove any
remaining fluid.
Note Every part to be installed must be cleaned and wiped dry.
6. Remove the hose from the pump output port to the bottom of the control
manifold.
7. Install the elbow (and reducer for the 505.11) to the surge suppressor
cylinder. Torque the fixtures to 33.9 N•m (25 lbf-ft).
8. Install the O-ring into the pump output port.
9. Install the surge suppressor assembly into the pump output port. Use the
hardware from the hose removed in Step 6.
10. Install the new hose between the surge suppressor assembly and the bottom
of the control manifold.
11. Precharge the surge suppressor.
12. If available, install the remote charging hose and bulhead fitting.
13. Add new hydraulic fluid to the reservoir.
Pump hydraulic fluid (filtered to 10 microns) into the reservoir. Stop when
the fluid level is full. Reinstall the strainer assembly of the filter cap.
Change the filter.
14. Run the HPU and check for leaks.