Frontier WC1208, Operator'S Manual

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11
MAINTENANCE & SERVICE
Knives
The performance of the chipper will depend largely on the condition of the knives. If the knives are
dull or damaged you will create a lot of unnecessary stress on the machine and consumes more
power from the tractor. The knives are reversible and can easily be reversed or replaced by remov-
ing the four bolts. (Figure 11) The bolts thread into a removable threaded block. Torque setting for
knife bolts is 175 ft. lb. We recommend that the knives be resharpened by a precision sharpening
service to retain the proper angle. The angle of the cutting edge should be 30 degrees. It is good to
keep an extra set of knives on hand to use while the other set is being sharpened.
Anvil (Shear Bar)
The anvil setting will also affect the performance of your chipper. Follow these steps to adjust the
anvil. The anvil can also be reversed if the edge gets damaged. This is a two man job.
Stop the tractor and remove the PTO and hydraulic connections.
Remove the access cover on the side of the chipper base and loosen the bolts (Figure 12) that
clamp the anvil in position. The holes for these bolts are slotted to allow for adjustment.
Slide the feed roller carriage up so you can look beneath the feed roller to check the setting of
the anvil. Place a wooden block between the top of the feed chamber and the feed roller car-
riage to keep the roller up out of the way.
Place a .0040 shim between the knife and anvil and have the second person tighten the bolts
when the anvil is set. There will be excess vibration and torque requirement if the anvil is set too
far from the knives.
Retighten the bolts to secure the anvil. Tighten to 60 ft.lb.
Put the access cover back into position.
Remove the block that you used to hold up the feed roller.
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Figure 11
Figure 12
Shield has been removed to show detail. All shields must be on at all times during operation!!