Parker Hannifin Corporation
Chelsea Products Division
Olive Branch, MS 38654 USA
20
Bulletin HY25-1590-M1/US
Owner’s Manual
590 Series
Power Take-Off Maintenance
Due to the normal and sometime severe torsional vibrations that Power Take-
Off units experience, operators should follow a set maintenance schedule for
inspections. Failure to service loose bolts or Power Take-Off leaks could result in
potential auxiliary Power Take-Off or transmission damage.
Periodic PTO MAINTENANCE is required by the owner / operator to ensure
proper, safe and trouble free operation.
Daily: Check all air, hydraulic and working mechanisms before operating
PTO Perform maintenance as required.
Monthly: Inspect for possible leaks and tighten all air, hydraulic and
mounting hardware, if necessary. Torque all bolts, nuts, etc.
to Chelsea specifications. Ensure that splines are properly
lubricated, if applicable. Perform maintenance as required.
With regards to the direct mounted pump splines, the PTO requires the
application of a specially formulated anti-fretting, high pressure, high temperature
grease. The addition of the grease has been proven to reduce the effects of the
torsional vibrations, which result in fretting corrosion on the PTO internal splines
as well as the pump external splines. Fretting corrosion appears as a “rusting and
wearing” of the pump shaft splines. Severe duty applications, which require long
PTO running times and high torque may require more frequent regreasing.
Applications such as Utility Trucks that run continuously and are lightly loaded
also require frequent regreasing due to the sheer hours of running time. It is
important to note that service intervals will vary for each and every application
and is the responsibility of the end user of the product. Chelsea also
recommends that you consult your pump owners manuals and technical services
for their maintenance guidelines. Fretting corrosion is caused by many factors
and without proper maintenance; the anti-fretting grease can only reduce its
effects on components.
Chelsea offers the grease to our customers in two packages. The first is a
5/8 fluid ounce tube (379688), which is included with every applicable PTO, and
the second is a 14-ounce grease cartridge (379831). Chelsea also offers
greaseable shafts for most all output designators.
Warranty: Failure to comply entirely with the provisions set forth in the
appropriate Owner’s Manual will result in voiding of ALL
Warranty consideration.
Power Take-Off Maintenance
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