MTS Model 506-62-72 Hydraulic Power Supply - Manual (Page 14)

3-2 Service
Table 3-1. Maintenance Schedule
Procedure Interval Subsection
Check output pressure on gage* daily
Replace high-pressure filter when the indicator points to CHANGE 3.1.1
Replace low-pressure filter when 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 a 10-micron high-pressure filter and a
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.
3 . 1 . 1 . 1 High-Pressure Filter Replacement
CHANGE
OK
DIRT ALARM
VW-GO46
Replace the high-pressure filter elements whenever the DIRT ALARM
indicator mounted on the base of each high-pressure filter housing
points to CHANGE (red or yellow zone) or whenever the hydraulic
fluid is replaced.
1. Press Stop on the HPS. The output pressure gage must read zero.