MTS Series 505 SilentFlo Hydraulic Power Unit Model 505-30 - Manual (Page 73)

Commoning Kit
Model 505.20 - 505.30 SilentFlo™ HPU Accessories 73
Installation procedure
1. Stop the HPU and ensure that the system hydraulic pressure is zero.
2. Remove the existing plug from the port labeled PO in the bottom of the
control manifold. Install a straight adapter in this port.
3. Slide the accumulator support brackets onto the accumulator. Mount the
flange adapter, split flange halves, and bolts to the accumulator.
4. Attach a straight adapter into the flange adapter.
5. Align the accumulator into position and mark the locations of the
accumulator support brackets on the base.
6. Remove the accumulator assembly and attach the headless screws to the
base in the locations you have marked. Position spacers over the headless
screws.
7. Precharge the accumulator per instructions in the Series 111 Accumulator
Product Information manual (MTS part number 011-553-304).
8. Position the accumulator onto the headless screws and spacers, and fasten
the accumulator with 1/4-20UNC nuts and washers.
9. Attach the hydraulic hose from the control manifold straight adapter to the
accumulator assembly straight adapter.
10. Start the HPU, leaving the unit in low pressure while you check for leaks.
11. Set the HPU to high pressure and check for leaks.
Commoning Kit
This section describes how to install the commoning kit (MTS part number 100-
009-492).
The commoning kit is used for multiple HPU operation. Commoning ensures that
the reservoir levels are balanced.
Procedure
1. Stop the HPU and ensure that the system hydraulic pressure is zero.
2. Remove the plastic cover and front and rear sheet metal panels.
3. Remove oil from the reservoir.
4. Remove the existing commoning port cover, fasteners, and gasket and
discard them.
5. Clean commoning port surfaces to ensure proper sealing of new
components.
6. Install commoning spool and gasket, using 5/8-11 UNC screws, washers and
nuts. Apply blue locktite 242 to nuts and torque them to 50 lbf·ft.
7. Install commoning valve and cover plate, using 5/8-11 UNC screws and
washers. Torque to 50 lbf·ft.
8. Fill the reservoir with fresh oil and check for leaks at the commoning.