MAC215990
338
Revision A
Checking Center Hold-Down
–
Short Knife Guards
The short center knife guard hold-down prevent the center knife section on the cutterbar from lifting off of the guard,
while still allowing the knife to slide. The center hold-down will need to be inspected to ensure that there is adequate
clearance between the hold-down and the center knife section.
DANGER
To prevent bodily injury or death from the unexpected start-up of the machine, always stop the engine and remove the
key from the ignition before making adjustments to the machine.
WARNING
To prevent bodily injury from the fall of a raised reel, always engage the reel safety props before going under the
raised reel for any reason.
WARNING
Wear heavy gloves when working around or handling knives.
1.
Raise the reel fully.
2.
Shut down the engine, and remove the key from the ignition.
3.
Engage the reel safety props. For instructions, refer to
Engaging Reel Safety Props, page 37
.
1029151
D
A
B
C
Figure 4.168: Center Knife Guard Hold-Down
4.
Manually stroke both knives to their inboard end so that
the knife sections are under hold-down (A).
5.
Push down on the knife section with approximately 44 N
(10 lbf) of force. Use a feeler gauge to measure the
clearance between hold-down (A) and the knife section.
Ensure that the clearance is as follows:
•
At tip (B) of hold-down: 0.1
–
0.5 mm (0.004
–
0.020 in.)
•
At rear (C) of hold-down: 0.1
–
1.0 mm (0.004
–
0.040 in.)
6.
If adjustment is required, refer to
7.
If no adjustment is required, tighten nuts (D) to 85 Nm
(63 lbf·ft).
8.
Recheck the clearances. Repeat this procedure as needed.
Adjusting Center Hold-Down
–
Short Knife Guards
If a short knife guard hold-down is binding its knife, the hold-down will need to be adjusted.
DANGER
To prevent bodily injury or death from the unexpected start-up of the machine, always stop the engine and remove the
key from the ignition before making adjustments to the machine.
WARNING
To prevent bodily injury from the fall of a raised reel, always engage the reel safety props before going under the
raised reel for any reason.
