Bandit 2890SP, Operating & Parts Manual

Page: 62 / 120

Bandit
56 Copyright 12/17
MODELS 2890SP/2900T HYDRAULICS
HYDRAULICS
THE BANDIT HYDRAULIC SYSTEM
­ After­the­initial­start-up­of­the­machine­and­after­any­replacement­of­­hydraulic­components,­fittings­and­
hoses must be re-checked for leaks and clearances.
CAUTION
!
The­Bandit­is­equipped­with­a­very­efficient,­simple­
hydraulic system. Each component is capable of
withstanding­a­specified­PSI­(bar)­and­still­operate­
for a very long time.
If the simple rules mentioned below are followed, the
hydraulic components will last for years:
• If the Bandit’s hydraulic system is kept clean and
the hydraulic pressures are not increased beyond the
specified­PSI­(bar),­the­maximum­use­and­life­should­
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
as­belts­or­clutch­slipping,­check­these­first.
• Only­use­the­optional­adjustable­flow­control­when­
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
operate­system­at­full­oil­flow­unless­chipping­large­­­
diameter trees.
• Do­not­close­the­optional­hydraulic­shut-off­valve­
for­ more­ than­ 3­ to­ 4­ 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.
• Some­component­manufacturers­require­different­
specific­ hydraulic­ lubrication,­ such­ as­ gear­ boxes,­
undercarriage drives, etc. Refer to their manuals and
maintenance section of this manual.
• After you have operated a new machine for
approximately an hour shut down the machine and
recheck­all­hydraulic­fittings­for­tightness­and­leaks.
• 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
­settings­beyond­specified­PSI­(bar).­This­will­cause­
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 400 hours of operation or 3
months.
• Replace hydraulic oil & suction screen(s) at least
once­yearly.­This­is­also­a­very­good­time­to­flush­and­
clean the tank. Replace hydraulic oil immediately if it
is contaminated or looks “milky”. See pages 53 - 54
for hydraulic oil requirements.