MacDon FD75, Operator'S Manual

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214323
414
Revision B
1024845
A
B
C
D
E
Figure 6.126: Double-Knife Center Short Knife Guard
Hold-Down
5. Double-knife center stub guard: Manually stroke knife to
locate sections under hold-down (B). Measure clearance
between knife sections (A) and (C) with a feeler gauge. The
clearance should be as follows:
•
At hold-down tip (D): 0.1
–
0.4 mm (0.004
–
0.016 in.)
•
At rear of hold-down (E): 0.1
–
1.0 mm (0.004
–
0.040 in.)
6. If necessary, refer to Adjusting Stub Guard Hold-Downs,
page 414 .
Adjusting Stub Guard Hold-Downs
Follow the instructions outlined in this section to properly adjust the hold-downs.
DANGER
To prevent bodily injury or death from the unexpected startup of the machine, always stop the engine and remove the
key before adjusting the machine.
1. Shut down the engine, and remove the key from the ignition.
Forged hold-down
1018604
C
D
B
F
A
E
Figure 6.127: Normal Stub Guard Forged Hold-Down
2. Manually stroke knife to center section(s) (A) under hold-
down (B) as shown in the Figure at right.
3. Loosen nuts (C) and back off bolts (D) clear of cutterbar.
4. Position a C-clamp or equivalent on trash bar at
location (F), and lightly clamp hold-down (B) to guard (E).
5. Turn bolts (D) until they contact cutterbar, then tighten
ONE turn.
6. Remove clamp.
7. Tighten nuts (C) and torque to 45 Nm (35 lbf·ft).
8. Check that specified clearances are achieved. For
instructions, refer to
Checking Stub Guard Hold-Downs,
page 413 .
MAINTENANCE AND SERVICING