Page 45 - DRAGO GT Operators Manual

Section 6 – Adjustments

6.3.2 – Replacing Stalk Roller Knives

Important: It is critical when replacing stalk
roller knives that they are positioned correctly on
the stalk roller using tool ST-5. If the knives are
not correctly positioned they can hit the opposing
stalk roller during operation causing failure of the
stalk roller or the row unit gearbox.

Note: Individual stalk roller knives should never be
replaced. They should always be replaced in groups of
four.

Note: Never flip stalk roller knives. This will create a
gap at the back of the stalk roller allowing crop
material to wrap around the stalk roller damaging the
row unit gearbox seals.

1) Inspect the stalk roller knives. If the
wear extends midway between the
second and third bolt (A) or if the
wear extends past the hard face
coating (B) the knives should be
replaced.
2) Remove the stalk roller assembly. See
Section 6.3.1
3) Remove five bolts (C) on the stalk
roller
4) Remove the stalk roller knife (D). Do
not remove more than one stalk roller
knife at a time.
5) Replace the stalk roller knife (E) and
lightly tighten the five bolts (F).
6) Place tool ST-5 (G) on the stalk roller
knife at the front of the knife. The knife
should be pushed out enough to
contact tool ST-5.
7) Repeat the process at the rear (H) of
the stalk roller knife.
8) Tighten the five bolts (F).
9) Reinstall the stalk roller onto the row
unit. See Section 6.3.1.
10) Rotate the stalk roller one full turn to
ensure that none of the knives contact
the knives on the opposing stalk roller
or the trash knife. If any contact is
observed repeat Steps 2-9.

Note: Do not slide tool ST-5 along the stalk roller knife
blade. The hardened edge of the knife will cut into the
edge of tool ST-5 causing the knife gap to be incorrect.

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