MacDon FD70 for Combine Operators - Manual (Page 172)

SECTION 10. MAINTENANCE AND SERVICING
Form 169006
170
Revision D
10.11.6.2.2 Pointed Guards: Double Knife
Refer to previous section for typical guard
replacement.
The guard near center of double knife header
(where the two sickles overlap) requires a slightly
different replacement procedure.
Replace center guard or center top guide as
follows:
a. Remove two nuts (A) and bolts that attach guard
(B) and top guide (C) to cutterbar.
b. Remove guard, poly wear plate (if installed), top
guide (C), and adjuster bar (D).
c. Position poly wear plate (if applicable),
replacement guard (B), adjuster bar (D), top
guide (C). Install bolts, but do not tighten.
IMPORTANT
Ensure center guard (B) (right of
cutterbar split) has offset cutting
surfaces.
NOTE
Top guide (C) must accommodate the
two overlapping knifes at center guard
location on double-knife header.
Ensure replacement is correct part.
d. Check and adjust clearance between hold-down
and sickle. Refer to Section 10.11.7 Sickle Hold-
Downs.
10.11.6.2.3 Stub Guards: Single Knife
Stub guards, complete with top guides and
adjuster plates are designed to cut tough crops.
Only the D60 Harvest Header 20 FT and 25 FT
models can be equipped with stub guards.
Replace stub guards as follows:
a. Remove the two nuts (E) and bolts that attach
guard (F) and top guide (G) to cutterbar.
b. Remove guard, poly wear plate (if installed), top
guide, and adjuster bar (H).
c. Position poly wear plate (if applicable),
replacement guard (F), adjuster bar (H), top guide
(G), and install bolts. Do not tighten.
IMPORTANT
Note position of mitre on adjuster bar
(H). Bar should be re-installed in same
position. Mitres should not be adjacent
to each other.
IMPORTANT
The first four outboard guards on drive
side(s) of the header do not have a
ledger plate. Ensure that the proper
replacement is installed.
d. Check and adjust clearance between top guide
and sickle. Refer to Section 10.11.7 Sickle Hold-
Downs.
D
A
C
B
DRIVE SIDE NORMAL
NORMAL CENTER
B
C
G
E
H
F