Parker Hannifin Corporation
Chelsea Products Division
Olive Branch, MS 38654 USA
25
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 P.T.O. 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
P.T.O. 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 P.T.O. 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
P.T.O. 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 P.T.O. 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 P.T.O.,
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.
Bulletin HY25-1650-M1/US
Power Take-Off Maintenance
Owner’s Manual
Electronic Overspeed Control
