MTS Series 505 SilentFlo Hydraulic Power Unit Model 505-180 - Manual (Page 96)

Model 505.60 - 505.180 SilentFlo™ HPU 96
Capscrew-Style Housing Filter Replacement
Maintenance
6. Replace the O-ring(s) seals in the bypass valve assembly and under the
cover. (Reference MTS part number 100-030-032 and 100-030-053.)
7. Unscrew the “T” handle from the cartridge rod and remove the filter
cartridge.
8. Install a new filter on the cartridge rod and secure it with the “T” handle.
9. Install the filter cartridge assembly into the head assembly and into the filter
tube.
10. Replace the cover and clamp it to the head assembly.
11. Turn on the HPU and switch to high-pressure mode. Inspect the seal
between the housing, filter, and cover for any signs of leakage.
12. If leakage occurs, repeat this procedure (without replacing the filter
element). If leakage persists, contact MTS Systems Corporation.
13. If you are changing the filter because the dirty filter indicator tripped, run
the HPU for two to four hours to remove contaminants. Then take a fluid
sample and have it analyzed.
14. Continue to clean the fluid if it does not meet an ISO cleanliness level of 16/
13/9 or better.
15. Press the Reset button on the user interface panel to reset any interlocks and
turn off the Return Filter Dirty indicator.
Capscrew-Style Housing Filter Replacement
The return-line filter element of the HPU should be replaced for the following
reasons:
• When the dirty-filter detector trips
• Whenever the hydraulic fluid is changed
• The filter manufacturer’s recommended maximum interval (1000 hours or 6
months)
Capscrews (4)
110 N·m (84 lbf·ft)
Filter Cap
Spring
Bypass Valve Assembly
Filter Element
Filter Housing
O-ring