MTS Series 505 SilentFlo Hydraulic Power Unit Model 505-180 - Manual (Page 91)

Models 505.60/.90/.120/.150/.180 HPU Maintenance
Model 505.60 - 505.180 SilentFlo™ HPU Maintenance 91
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.
Lockout/tagout
For your safety, follow all appropriate lockout/tagout procedures while
performing HPU maintenance.
Check motor overload
functionality ‡
Every 1000 hours or 6 months
(whichever occurs first). Contact MTS Systems Corporation.
Verify proper operation of
hydraulic valves
§
Every 1000 hours or 6 months
(whichever occurs first). Contact MTS Systems Corporation.
Conduct a hydraulic fluid
analysis Every 1000 hours or 6 months
(whichever occurs first), or sooner
if duty is severe
§
.
Obtain a sample and submit it for analysis.
MTS recommends that the sample be
analyzed by our contracted service. Ask
your Field Service Engineer for
information.
Replace hydraulic fluid
§ If fluid analysis is not to
specifications. Refer to procedure for replacing hydraulic
fluid.
Conduct internal
inspection of heat
exchanger
†,‡
Every 2000 hours or yearly
(whichever occurs first). 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 Every 2000 hours or yearly
(whichever occurs first). Contact MTS Systems Corporation.
Replace the PLC battery Every 4000 hours or 2 years
(whichever occurs first). Contact MTS Systems Corporation.
Replace heat
exchanger †,‡
Every 5000 hours or 3 years
(whichever occurs first). Replace as inspection warrants. Contact
MTS Systems Corporation for special
training.
Inspect the motor and
pump. Replace motor
bearings
‡
Every 30,000 hours or 5 years
(whichever occurs first). Motors may be rewound or replaced as
required by inspection.
Hydraulic pumps may be rebuilt or replaced
as required by inspection.
Contact MTS Systems Corporation for
special training
Replace hydraulic hoses ‡ Every 10,000 hours or 5 years
(whichever occurs first). Contact MTS Systems Corporation for
special training.
* See the Series 111 Accumulator Product Information manual (part number 011-553-304). An accumulator
is an optional feature that can be added to the pressure line.
† See the Heat Exchanger Care Guide (part number 015-164-000).
‡ Special Training Required. Contact MTS Systems Corporation.
§ See the Hydraulic Fluid Care Guide (part number 050-000-536).
Maintenance Schedule (Continued)
What to Do When to Do It How to Do It