MacDon FD75 OM - Manual (Page 334)

MAINTENANCE AND SERVICING
Changing Oil in Knife Drive Box
Change knife drive box lubricant after the first 50 hours of
operation and every 1,000 hours (or 3 years) thereafter.
To change the oil in the knife drive box, follow these steps:
1. Raise header to allow a suitable container to be placed
under the knife box drain to collect oil.
2. Open endshield(s). Refer to Opening Endshields,
page 35 .
3. Remove breather/dipstick (A) and drain plug (B).
4. Allow oil to drain.
5. Reinstall drain plug (B).
6. Add oil to knife drive box. Refer to 6.2.2
Recommended Fluids and Lubricants, page 244
for quantity.
7. Close endshield(s). Refer to Closing Endshields, page
36 .
Figure 6.133: Knife Drive Box
6.8.10 Knifehead Shield
The shield attaches to the endsheet and reduces the knifehead opening to prevent cut crop from accumulating in
the knifehead cut-out, especially in severely lodged crops.
The shield(s) and mounting hardware are available from your MacDon Dealer.
IMPORTANT:
Shields should be removed when cutting with the cutterbar on the ground in muddy conditions. Mud may
pack into the cavity behind the shield and cause knife drive box failures.
169894 320 Revision A