MacDon 4000 Mower Conditioner - Manual (Page 49)

49
MAINTENANCE/SERVICE
KNIFE AND KNIFE DRIVE (continued)
To Remove Knife
WARNING: Always stand to rear of
knife during removal to reduce risk
of injury from cutting edges. Wear
heavy gloves when handling knife.
1. Clean area around knife head. Stroke knife to
its outer limit and remove bolt (A).
2. Insert screwdriver in slot (B) and pry up on
knife head pin to free knife.
3. Pull knife out.
4. Cover knife head to shield bearing from dirt.
To Install Knife
WARNING: Always stand to rear of
knife during installation to reduce
risk of injury from cutting edges.
Wear heavy gloves when handling
knife.
IMPORTANT: Always align guards and re-set
knife clips while replacing knife. See "Guards" and
"Knife Clips" in this section.
1. Slide knife into place and replace bolt (A).
NOTE: Notch in knife head pin must align with
bolt.
2. Tighten bolt (A) to 160 ft.lbs. (217 N.m).
IMPORTANT: To avoid premature knife head or
wobble box failure, be sure there is no looseness
in:
a) Fit of knife head pin and needle bearing.
b) Fit of knife head pin and pitman arm.
Knife Storage - Tool Box
A spare knife can be stored in the main frame tube
with access at toolbox (A) at left end of frame.
Hook last section (B) into slot in toolbox so knife
slides in and out with box.
Latch box with hairpin (C).
NOTE: Box is also used for storage of tool (D) for
guard straightening or rocking wrench.
REMOVING KNIFE
B
A
INSTALLING KNIFE
A
KNIFE STORAGE - TOOL BOX
B
A
D
C