Maintenance
58 Series 505G2 SilentFlo™ Hydraulic Power Unit
Before You Begin
Spare parts
Parts that are specified in the maintenance procedures of this section can be obtained from MTS
Systems Corporation.
Lockout/tagout
For your safety, follow all appropriate lockout/tagout procedures while performing HPU maintenance.
Operating the HPU
When running the HPU, become familiar with the sounds and smells of the HPU. Changes in the
sounds and smells of the HPU might indicate that maintenance or service is needed.
Routine Maintenance Overview Checklist
Calendar Time
using 8 hour
Running Time
rate per day
Daily Weekly Monthly Annually
Running Time-
Hours
8 40 160 500 1000 1,500 2,000 5,000 10,000
Check electronic
enclosure
ventilation
X
1
Check dirty filter
indicators
X
Check for leaks X
Check oil level X
Check pressure X
Check fluid color
and odor
X
Check interlock
devices
X
Recommended service to be performed at each running time interval noted
1
Symbol denotes services performed by equipment operators. Most of these procedures involve visual
checks that should not interfere with test system operation. These checks are also completed by
trained field service engineers on each Routine Maintenance visit.
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