MTS Series 505G2 SilentFlo Hydraulic Power Unit Model 505G2-11 - Manual (Page 57)

Replacing the Return Line Filter
Model 505G2.07/.11 SilentFlo™ HPU 57
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 maximum interval recommended by the filter manufacturer has passed
(1000 hours or 6 months)
Prerequisite You will need a filter element (MTS part number 100-009-495) or a filter kit
(MTS part number 100-030-195).
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 an 8-mm (5/16-inch) allen wrench.
Return Line Filter Component Identification
3. Check the output pressure gage. Ensure that the pressure is at zero before
proceeding.
4. Unscrew the filter cover. The filter element, bypass assembly, and filter
bowl can be removed as one assembly. Be careful not to spill any hydraulic
fluid.
5. Remove the disposable element from the bowl. Discard any fluid contained
in the filter bowl.
Output
Pressure
Gage
Filter
Assembly