MacDon A40-D - Manual (Page 129)

SECTION 7 MAINTENANCE AND SERVICING
169000 / 169040
127
Revision E
7.8.8.2 Sickle Hold-Down Adjustment: Stub
Guards
Single Knife
a. Torque nuts (E) to 35 ft·lbf (46 N·m).
b. Turn adjuster bolts (F). Using a feeler gauge,
clearance from hold-down to sickle section
should be 0.004–0.016 in. (0.1–0.4 mm) at the
guard tip, and 0.004–0.040 in. (0.1–1.0 mm) at
rear of guide.
c. Torque nuts (E) to 53 ft·lbf (72 N·m).
Double Knife
a. Torque nuts (G) to 35 ft·lbf (46 N·m).
b. Turn adjuster bolts (H). Using a feeler gauge,
clearance from hold-down to sickle section
should be 0.004–0.016 in (0.1–0.4 mm) at the
guide tip, and 0.004–0.040 in. (0.1–1.0 mm) at
rear of guide.
c. Torque nuts (G) to 53 ft·lbf (72 N·m).
d. After adjusting all hold-downs, run header at a
low engine speed, and listen for noise due to
insufficient clearance. Insufficient clearance will
also result in overheating of the sickle and
guards.
0.004 – 0.040 in.
(0.1 – 1.0 mm)
0.004 – 0.016 in.
(0.1 – 0.4 mm)
E
F
0.004 – 0.016 in.
(0.1 – 0.4 mm)
0.004 – 0.040 in.
(0.1 – 1.0 mm)
G
H