54 CropHawk Draper Platform Operators Manu-
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Knife
Service / Maintenance
Replacing Knife Sections
Knife Section Service Kits are available through your
MidWest Fabrication Dealer
to replace individual
sections, or the complete knife. This kit contains all of the necessary hardware, sections and instructions.
NOTE: replace or repair parts as required
For optimal performance and durability of cutting components:
Inspect for broken or improperly adjusted hold downs (A), reset or replace as required
Inspect for dull or broken knife sections (B), repair or replace as required
Inspect for dull or worn or broken guard cutting edges (C), repair or replace as required.
Inspect for excessive binding between top of knife sections and top of guard slot. Binding can be caused
by bent guards, bent cutterbar or improper position of guards, repair or replace as required.
Inspect knife head and knife drive alignment with first guard slot to insure binding is not present in are-
as. Repair, adjust or replace as required.
Verify that complete cutting systems turn freely by rotating the drive by hand (drive shaft removed). If
system does not turn freely, repeat inspection points.
IMPORTANT: Death to you or others can
occur from feeder house in-
advertently lowering.
Complete-
ly raise feeder house and verify that safety
stop is engaged
when performing any
procedure with header attached to ma-
chine.
Cracking of hydraulic line fittings
to lower feeder house results in an
immediate dropping of feeder
house and header. To prevent inju-
ry, raise feeder house
completely
and lower safety stop onto hydraulic cylinder rod.
1.
Position knife so hold-downs and/or guard tops do not inhibit section removal (Four finger knife guards
pictured require the removal of the guard completely to freely access sickle).
2.
Remove nuts (D) on section.
3.
Tap or pry knife section (B) and discard.
4.
Remove and discard any damaged bolts (D).
5.
Replace bolts (D), ensure splined body and head are fully seated.
6.
Install new section.
7.
Tighten knife section bolts (D) to 15 nm (11 ft-lb), knife guard blots (E) to 56 nm (41 (ft-lb).
D
B
C
A
E
