Brush Bandit 1290XP, Operating & Parts Manual

Page: 79 / 140

Bandit
Copyright 12/07 PAGE 7
MODELS 1290XP/1590 HYDRAULIC SECTION
HYDRAULIC SECTION
THE BANDIT HYDRAULIC SYSTEM
The Bandit is equipped with a very efficient, simple
hydraulic system. Each component is capable of
withstanding a specified PSI (bar) and still operate for
a very long time.
If the simple rules mentioned below are followed, the
hydraulic components will last for years:
•After you have operated a new machine for
approximately an hour shut down the machine and
recheck all hydraulic fittings for tightness and leaks.
• Avoid hydraulic pump cavitation. Low oil levels or
cold start-ups will cause the hydraulic pump to cavitate.
Cavitation will ruin the pump and possibly the entire
hydraulic system. Cavitation only has to happen
once. This will start the pump on its way to ruin. Allow
hydraulic system to turn slowly for several minutes in
cold weather in order for hydraulic system to warm up.
Cavitation is not covered under warranty.
• Do not increase the feedwheel relief valve settings
beyond specified PSI (bar). This will cause damage to
hydraulic components. Do not set any other hydraulic
component past it’s specified pressure or this will cause
damage to the hydraulic components.
• Keep hydraulic oil clean. Dirty oil will cause excessive
wear and loss of hydraulic power.
• Replace the hydraulic oil filter(s) after first 10 hours
and with each 00 hours of operation or months.
• Replace hydraulic oil & suction screen(s) at least
once yearly. This is also a very good time to flush and
clean the tank. Replace hydraulic oil immediately if it
is contaminated or looks “milky”. See pages 54 - 55
for hydraulic oil requirements.
• If the Bandit’s hydraulic system is kept clean and
the hydraulic pressures are not increased beyond
the specified PSI (bar), the maximum use and life
should be received from the Bandit chipper hydraulic
system.
• If a problem is encountered, it will more than likely
be located in the relief valve or something as simple
as belts slipping, check these first.
• Only use the optional adjustable flow control when
chipping large diameter trees. Do not leave the speed
adjustment partially open for long periods of time. This
will cause excessive heat to the hydraulic system!
Excessive heat will cause low feedwheel power and
premature failure of all hydraulic components. Always
operate system at full oil flow unless chipping large
diameter trees.
• Do not close the optional hydraulic shut-off valve
for more than to seconds. Hydraulic shut-off
valve handle must be completely turned on (in line
with hose) at all times unless checking hydraulic
pressure. Pressure gauge should be safely stored and
installed only when checking pressure. Follow above
instructions or this will cause unwarranted damage to
the hydraulic components.
• Never close the ball valves on the hydraulic tank
suction ports (if equipped) while the machine is running,
this will ruin the hydraulic pump and components.
• Some component manufacturers require different
specific hydraulic lubrication, such as gear boxes,
undercarriage drives, etc. Refer to their manuals and
maintenance section of this manual.
HYDRAULIC COMPONENTS
Feedwheel hydraulic motor(s):
These hydraulic motor(s) are attached to the
feedwheel(s) by a tapered feedwheel motor connection
or by a clamp style connection.
Hydraulic pump:
The hydraulic pump could be bolted directly to
the engine, or may be driven by a sheave/belt
combination off of the chipper shaft.
Suction strainer(s):
This strainer(s) stops contaminants from reaching the
hydraulic pump. The suction strainer(s) should be
replaced at least once yearly or every 2000 hours.
Hydraulic tank:
This tank must be kept clean and filled minimum 7/8
full. Clean tank yearly.
Filter:
This spin-on cartridge filter must be replaced per
maintenance schedule.
Filter mount:
The filter is tightened on the Filter Mount.
Feedwheel valve:
This valve is actuated by the control bar. The valve
actuates the feedwheel for forward, off or reverse. It
may also contain an adjustable relief valve.