18” CHIPPER SERVICE
HYDRAULICS
61
HOSES AND FITTINGS
• Inspect hoses and fittings for leaks,
tightness, wear, or damage. Replace any
hoses and fittings that need replacing.
• FLUID UNDER PRESSURE CAN
PENETRATE THE SKIN AND CAUSE
SEVERE INJURY. CHECK HOSES AND
FITTINGS USING A BOARD OR
CARDBOARD; DO NOT USE HAND OR
FINGER. SEEK IMMEDIATE MEDICAL
ATTENTION IF SKIN IS PENETRATED.
ALWAYS WEAR EYE PROTECTION.
HYDRAULIC PRESSURE
• If feed wheels start to run slow when engine
RPM is high, check hydraulic pressure.
• Remove the plugs in the top of the hydraulic
block, holes marked “G1” and “G2”, and
install pressure gauges.
• Test the hydraulic pressure. With the engine
at idle and with the cutter disk disengaged,
run a log between the feed wheels and butt it
against the cutter disk. Turn Auto-Feed off
to operate feed wheels with engine at idle,
see Machine Controls section. Check the
pressure reading.
• The overall hydraulic pressure setting is
2500 PSI, preset at the factory, and should
remain set at that pressure.
REMOVE BOTH
PLUGS AND
INSTALL TWO
PRESSURE
GAUGES
DO NOT UNDER ANY CIRCUMSTANCES SET
THE HYDRAULIC PRESSURES ABOVE THE
FACTORY SETTINGS; COMPONENT PART
AND HYDRAULIC SYSTEM DAMAGE WILL
OCCUR AND POSSIBLY PERSONAL INJURY.
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