18” CHIPPER MACHINE MAINTENANCE
46
FEED WHEEL TENSION SPRINGS
• The upper feed wheel has two tension
springs on the left side. These springs
should only be tight enough to keep the
feed wheel teeth from slipping on the
material. DO NOT OVER TIGHTEN!
If the springs are overly tight, it will
over work the hydraulic system and
make it difficult to feed large material.
UPPER FEED WHEEL CHAIN
• Check the upper feed wheel chain and
sprockets for wear weekly. (See Service
Feed Wheel Motor section.)
• Check chain tension weekly and adjust
as necessary. When the chain is new,
check tension after eight hours of
operation and then continue to check
weekly.
• Use a piece of flat bar or other solid flat
material to check the tension on the
chain. The chain should deflect
approximately 1/2” - 1” when pressure is
applied to the chain about half way
between the two sprockets.
• Place the flat bar next to the chain
without applying any pressure. Make a
mark on the back of the chain guard at
the end of the flat bar.
• Push the chain in using the flat bar and
make a mark on the flat bar that lines up
with the mark you made on the back of
the chain guard.
• Measure the distance from the end of the
flat bar to the mark you made. This
should measure around 1/2” - 1” if not
make an adjustment using the
adjustment bolt at the top of the feed
wheel motor assembly.
• See the Service Feed Wheel Motor
section of this manual for information
on how to adjust the chain tension.
SPRING ADJUSTMENT
FEED WHEEL TENSION SPRINGS
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