MTS Model 512-14 Hydraulic Power Unit - Manual (Page 28)

512.14 Hydraulic Power Unit 28 Maintenance
Spare parts
Parts that are specified in the maintenance procedures of this section can be
obtained from MTS Systems Corporation. See “Contact information” on the back
of the title page to order spare parts.
Verify functionality of
HPU interlocks
†
Every 1000 hours or 6 months Contact MTS Systems Corporation.
Lubricate pump motor Every 1000 hours or 6 months Perform “Lubricating the Motor” on page 39.
Check motor overload
functionality
†
Every 1000 hours or 6 months Contact MTS Systems Corporation.
Verify proper operation of
hydraulic valves
†
Every 1000 hours or 6 months Contact MTS Systems Corporation.
Conduct a hydraulic fluid
analysis Every 6 months or sooner if duty
is severe
‡ .
Obtain a sample and submit it for analysis.
Most oil or other qualified companies can
analyze hydraulic fluid or consult MTS
Systems Corporation.
Perform “Sampling the Hydraulic Fluid” on
page 32.
Replace hydraulic fluid ‡ Every 6 months or sooner if fluid
analysis is not to specifications. Perform “Replacing the Hydraulic Fluid” on
page 36.
Conduct internal
inspection of heat
exchanger
*,†
Yearly, or every 2000 hours Look for signs of fouling or corrosion,
conduct chemical or mechanical internal
cleaning as inspection warrants.
Consult the Heat Exchanger Care Guide for
more information.
Check case drain flow of
hydraulic pump Yearly, or every 2000 hours Contact MTS Systems Corporation.
Replace heat exchanger † Every 3 years or 5,000 hours Replace as inspection warrants. Contact MTS
Systems Corporation for special training.
Replace motor bearings † Every 3 years or 5,000 hours Contact MTS Systems Corporation.
Replace hydraulic hoses,
motors, pumps
†
Every 5 years or 10,000 hours Replace as inspection warrants. Hydraulic
pumps may be rebuilt or replaced as required
by inspection. Motors may be rewound or
replaced as required by inspection. Contact
MTS Systems Corporation for special
training.
* See the MTS Heat Exchanger Care Guide (part number 015-164-000).
† Special training required. Contact MTS Systems Corporation.
‡ See the MTS Fluid Care Guide (part number 050-000-536).
Maintenance Schedule (part 2 of 2)
What to Do When to Do It How to Do It