MTS Hydraulic Power Unit Model 506-92 - Manual (Page 14)

3-2 Service
Table 3-1. Maintenance Schedule
Procedure Interval Subsection
Check output pressure on gage * daily
Replace high-pressure filter whenever the indicator points to
change
3.1.1
Replace low-pressure filter whenever Dirty Filter indicator lights 3.1.1
Check hydraulic fluid level on gage daily 3.1.2
Check hydraulic fluid in reservoir 150 operating hours 3.1.2
Analyze hydraulic fluid 500 operating hours 3.1.2
Check accumulator precharge at established interval 3.1.3
Check hydraulic hoses monthly
* See Subsection 3.2.1 to adjust the output pressure.
3 . 1 . 1 Filters
Fluid filtration is provided by two 10-micron high-pressure filters (one for
each pump), and one 3-micron low-pressure filter. See Figure 3-1 for the
location of the filters and their drains.
WARNING !
High-pressure release occurs if the system is pressurized.
High-pressure release may cause personal injury or damage equipment.
Ensure that the output pressure gage reads zero before replacing the
filters.