MTS Series 505G2 SilentFlo Hydraulic Power Unit Model 505G2-30 - Manual (Page 61)

Replacing the Return Line Filter
Model 505G2.20 - 505G2.30 SilentFlo™ HPU Maintenance 61
Replacing the Return Line Filter
The filter element of the HPU should be replaced for the following reasons:
• When the dirty-filter indicator lights
• Whenever the hydraulic fluid is changed
• The filter manufacturer’s recommended maximum interval has passed
(1000 hours or 6 months)
Prerequisite You will need a filter element (MTS part number 010-053-349) or a filter kit
(MTS part number 100-078-099).
Procedure To change the filter element:
Note The dirty-filter indicator may light when the HPU is first started due to low
hydraulic fluid temperature. When the HPU is at normal operating
temperature, recheck the indicator to determine if the element actually
needs replacement.
1. Turn off the HPU.
2. Open the top of the HPU with a 8-mm (5/16-inch) allen wrench.
Return Line Filter Component Identification
3. Check the output pressure gage. Be sure the pressure is at zero before
proceeding.
Note You can remove the filter from the top of the HPU if you are careful. If
you want easier access to the filter, you can remove the front panel. The
front panel is secured to the HPU with screws along each side and the
bottom of the panel.
Output
Pressure
Gage
Filter
Housing