MacDon FD75 OM - Manual (Page 320)

MAINTENANCE AND SERVICING
IMPORTANT:
The first four outboard guards (B) on drive side(s)
of header do not have a ledger plate. Ensure that
proper replacement is installed.
5. Install hold-down, and secure with nuts. Tighten nuts
to 50 ft·lbf (68 N·m).
6. Check and adjust clearance between hold-down and
knife. Refer to
Knife Hold-Downs, page 309 .
Figure 6.102: Guards
A - Normal B - Drive Side C - Half Guard (End)
Replacing Pointed Guards on a Double-Knife Header
WARNING
To avoid bodily injury from fall of raised reel, always
engage reel safety props before going under raised
reel for any reason.
Refer to Replacing Pointed Guards on a Single-Knife
Header, page 305 for typical guard replacement.
The guard near the center of the double-knife header
(where the two knives overlap) requires a slightly different
replacement procedure.
To replace the pointed center guard or center top guide on
a double-knife header, follow these steps:
1. Remove two nuts (B) and bolts that attach guard (A)
and top guide (C) to cutterbar.
2. Remove guard, poly wear plate (if installed), top
guide (C), and adjuster bar (D).
Figure 6.103: Double Knife Guard
A - Knife Guard B - Nuts
C - Top Guide D - Adjuster bar
169894 306 Revision A