Textron PT-3500, Operator'S Manual

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Revolution Series PT-3500 / PT-7500 Puller Tensioner Page 88
Maintenance
Hydraulic System
Replacing Hydraulic Fluid and Filters
Filter replacements are necessary if the
indicator icon shows on the system control
display. If the system indicates that a filter
replacement is necessary, all filters must be
replaced. The PT-Series has two in-line high
pressure supply filters, and one low pressure
return filter located inside the
hydraulic fluid tank/reservoir.

First ensure that all cylinders: ( levelwind and
jacks) are retracted as must as possible, and
that the pump is off.
**For Filter Only Replacement skip next step:

**With proper reservoir in place to catch the
hydraulic fluid, open the tank drain cock by
rotating it CCW. This will open the valve
allowing the hydraulic fluid to flow from the
center of the drain plug without having to
remove the entire plug. The drain cock is
located on the drain plug at the bottom of the
hydraulic tank.
*Filter Only Replacement continue here:

Using filter wrench, loosen external supply
filters, located behind the rope drum on the
inside of the frame, by turning counter
clockwise. Once loose, turn by hand and
remove filter.
PT-7500 Filter Placement
CAUTION : Make sure hydraulic fluid system has
had at least 30 minutes to cool prior to
maintenance.
NOTE: The system monitors the filter
highest pressure. Therefore, to ensure optimal
hydraulic system life, all filters must be replaced
when required and at the same time.
NOTE: Once removed, filter will still have fluid in it; use
care when removing filter so as not to spill remaining
hydraulic fluid. A small collection reservoir may be
needed.
PT-3500 Filter Placement